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Principios básicos de Fluídos

Las bombas son dispositivos que gastan energía para levantar, transportar, o comprimir fluidos. Las primeras bombas fueron hechas para elevar el agua. Estas se conocen hoy como ruedas hidráulicas persa y romana, y más la mas sofisticada tornillo de Arquímedes.

Las operaciones de minería de la Edad Media llevaron al desarrollo de la bomba de aspiración o de pistón. Hay muchos tipos de bombas de succión. Estas fueron descritas por  Georgius Agricola en su De re Metallica escrito en 1556 D.C. Una de succión trabaja por presión atmosférica. Esto significa que cuando el pistón se eleva, éste crea un vacío parcial. La presión atmosférica externa entonces fuerza al agua dentro del cilindro. A partir de ahí, se le permite escapar a través de una válvula de salida. La presión atmosférica sólo puede forzar el agua hasta una altura máxima de alrededor de 34 pies (10 metros). Así, la bomba de fuerza se desarrolló para drenar las minas más profundas. El movimiento hacia abajo de la bomba de fuerza, forza el agua hacia afuera a través de una válvula lateral. La altura elevada depende de la fuerza aplicada al pistón.

El fluido se emplea en un sistema cerrado como un medio para provocar el movimiento, ya sea lineal o rotativo. Debido a las mejoras en los sellos, materiales, y técnicas de  mecanizado, el uso de líquidos para controlar movimientos ha aumentado considerablemente en el pasado reciente.

El fluido puede estar o bien en estado líquido o gaseoso. El aire, aceite, agua, oxígeno, y nitrógeno, son ejemplos de fluidos. Todos ellos pueden ser bombeados por dispositivos altamente mejorados de hoy en día.

Física

Una rama de la ciencia que se ocupa de la materia y la energía y sus interacciones en el campo de la mecánica, la electricidad, los fenómenos nucleares, y otros se llama física. Algunos de los principios básicos de fluidos deben ser estudiados para comprender los conceptos de las bombas e hidráulica.

Materia

La materia puede ser definida como cualquier cosa que ocupa espacio, y toda la materia tiene inercia. La inercia es que la propiedad de la materia por la cual la misma se mantendrá en reposo o en movimiento uniforme en la misma línea recta o dirección a menos que actúe sobre la misma una fuerza externa. La materia es cualquier sustancia que pueden ser pesada o medida. La materia puede existir en uno de tres estados:

  • Sólidos (carbón, hierro, hielo)
  • Líquido (aceite, alcohol, agua)
  • Gas (aire, hidrógeno, helio)

El agua es el ejemplo común de una sustancia que existe en cada uno de los tres estados de la materia (véase la Figura 1-1) como hielo (sólido), agua (líquido), y vapor (gas).

Figura 1-1 Los tres estados de la materia: sólido, líquido y gas. Tenga en cuenta que el cambio de estado de sólido a un líquido se llama fusión, y el cambio de estado de líquido a gas se llama vaporización.

Cuerpo

Un cuerpo es una masa de materia que tiene una cantidad concreta. Por ejemplo, una masa de hierro de 3 pulgadas x 3 pulgadas x 3 pulgadas tiene una cantidad definida de 27 pulgadas cúbicas. También tiene un peso definido. Este peso puede ser determinado colocando el cuerpo en una escala (ya sea una escala de palanca o plataforma o una escala de resorte). Si un peso exacto es necesario, una escala palanca o de plataforma debe ser empleada. Dado que el peso depende de la gravedad, y ya que la gravedad disminuye con la altura, la lectura de una escala con resorte varía, como se muestra en la Figura 1-2.

Figura 1-2. Variación en las lecturas de una escala de resorte para diferentes elevaciones.

Energía

La energía es la capacidad para hacer trabajo y vencer la resistencia. Hay dos tipos de energía,  son potencial y cinética (ver Figura 1-3).

La energía potencial es la energía que posee un cuerpo debido a su posición relativa. Por ejemplo, si una bola de acero está suspendido por una cadena, la posición de la bola es tal que si la cadena es cortada, un trabajo puede ser hecho por la bola.

La energía cinética es la energía que tiene un cuerpo cuando se está moviendo con una cierta velocidad. Un ejemplo podría ser una bola de acero rodando por una pendiente. La energía se expresa en las mismas unidades que el trabajo (libras-pie).

Como se muestra en la Figura 1-3, el agua almacenada en un depósito elevado o tanque representa la energía potencial, ya que puede ser utilizada para hacer  trabajo cuando sea liberada a una elevación menor.

Figura 1.3. Energía potencial y energía cinética.

Conservación de la Energía

Es un principio de física de que la energía puede ser transmitida de un cuerpo a otro (o transformado) en sus manifestaciones, pero la energía no se puede crear ni ser destruida. La energía puede ser disipada.

Es decir, se puede convertir en una forma de la cual no puede ser recuperada (el calor que se escapa con el escape de una locomotora, por ejemplo, o el agua condensada de un barco de vapor). Sin embargo, la cantidad total de energía en el universo permanece constante, pero variable en forma.

Experimento de Joule

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CARQUEST or Airtex Mechanical Fuel Pump - 711
 

CARQUEST or Airtex Mechanical Fuel Pump - 711

$67.99

Please note: Advance Auto Parts is proud to carry comparable exact-fit parts from multiple vendors, as such, the item you receive may be one of two quality brands. Both brands meet the same fitment requirements and are equal in their performance and specifications. CARQUEST or Airtex mechanical fuel pumps are the only mechanical fuel pumps manufactured in the USA. These pumps are precision-cast units designed to meet or exceed OEM specifications and are built with enhanced, long-lasting components. Product Features: Special heat treated rocker arms and case-hardened pins to ensure long-lasting performance Upgraded seals and pump diaphragms for compatibility with modern multi-fuel blends Every single pump is 100% tested throughout the entire manufacturing process for worry free, out-of-the-box performance. Most Fuel Pumps products are available for in-store pickup from Advance Auto Parts. [Read more]

Store: Advance Auto Parts

Brand: Carquest Or Airtex

Bosch Electrical Fuel Pump Kit - 69110
 

Bosch Electrical Fuel Pump Kit - 69110

$85.49

All Bosch fuel pumps conform to an "OE or greater" standard for fit, form and function. This means you get a long-lasting, high-performing pump that fits right the first time. Product Features: OE Fit OE Form OE Function. Most Fuel Pumps products are available for in-store pickup from Advance Auto Parts. [Read more]

Store: Advance Auto Parts

Brand: Bosch

CARQUEST or Airtex Fuel Pump Sender Assembly - E3621S
 

CARQUEST or Airtex Fuel Pump Sender Assembly - E3621S

$184.99

Please note: Advance Auto Parts is proud to carry comparable exact-fit parts from multiple vendors, as such, the item you receive may be one of two quality brands. Both brands meet the same fitment requirements and are equal in their performance and specifications. CARQUEST or Airtex fuel pump sender assemblies feature exact fit, with design improvements, such as upgraded polymers, brushes, and commutators to ensure lasting durability in multiple fuel blends. Also features advanced rust-inhibiting finish for longer life. Product Features: Every single pump is 100% tested throughout the entire manufacturing process for worry free, out-of-the-box performance Advanced rust-inhibiting finish for long-lasting durability High-performance pump section assembly provides superior performance Leading-edge inlet design to reduce friction and increase performance Gradient density strainer designed for better contamination resistance. Most Fuel Pumps products are available for in-store pickup fr... [Read more]

Store: Advance Auto Parts

Brand: Carquest Or Airtex

CARQUEST or Airtex Mechanical Fuel Pump - 41300
 

CARQUEST or Airtex Mechanical Fuel Pump - 41300

$26.99

Please note: Advance Auto Parts is proud to carry comparable exact-fit parts from multiple vendors, as such, the item you receive may be one of two quality brands. Both brands meet the same fitment requirements and are equal in their performance and specifications. CARQUEST or Airtex mechanical fuel pumps are the only mechanical fuel pumps manufactured in the USA. These pumps are precision-cast units designed to meet or exceed OEM specifications and are built with enhanced, long-lasting components. Product Features: Special heat treated rocker arms and case-hardened pins to ensure long-lasting performance Upgraded seals and pump diaphragms for compatibility with modern multi-fuel blends Every single pump is 100% tested throughout the entire manufacturing process for worry free, out-of-the-box performance. Most Fuel Pumps products are available for in-store pickup from Advance Auto Parts. [Read more]

Store: Advance Auto Parts

Brand: Carquest Or Airtex

Cardone Remanufactured Power Steering Pump w/Reservoir - 20-8734
 

Cardone Remanufactured Power Steering Pump w/Reservoir - 20-8734

$64.56

A1 CARDONE power steering pumps are remanufactured to meet or exceed O.E. performance. Original designs are scrutinized for potential improvement, and where applicable, design upgrades are implemented to produce a more durable part than the original. All critical components are tested to ensure proper function. Every unit undergoes a hydraulic efficiency test to ensure reliable, long-lasting performance. Product Features: All units are built with 100% new O-rings and premium-grade Viton seals to prevent leaks. Viton does not break down at high temperatures like conventional seal material All critical components are triple-tested to ensure product reliability Every pump is computer tested to measure pressure, bypass, fluid flow, valve operation, steering effort and noise for guaranteed performance Units are supplied with 100% tested and calibrated pressure relief valves for guaranteed performance Shafts are surfaced to precise specifications to eliminate premature seal wear and ext... [Read more]

Store: Advance Auto Parts

Brand: Cardone

Delphi Fuel Pump Module Assembly - FG0351
 

Delphi Fuel Pump Module Assembly - FG0351

$362.99

For more than a century, Delphi has been making the parts cars are born with - often developing new technologies in the process. Delphi is proud of its OE heritage, and over the years they†ve used that experience to expand into a global aftermarket supplier. Product Features: Internal springs increased durability and enhanced stability prevents tube chafing Lower amperage draws less load on vehicle's electrical system Fuel level gold-filled sensors provide improved resistance to sulfur corrosion and heat resistance Empty float height and float retention is to exact OE specifications guaranteeing correct gas gauge reading. Most Fuel Pumps products are available for in-store pickup from Advance Auto Parts. [Read more]

Store: Advance Auto Parts

Brand: Delphi

CARQUEST or Airtex Fuel Pump Module Assembly - E8424M
 

CARQUEST or Airtex Fuel Pump Module Assembly - E8424M

$335.99

Please note: Advance Auto Parts is proud to carry comparable exact-fit parts from multiple vendors, as such, the item you receive may be one of two quality brands. Both brands meet the same fitment requirements and are equal in their performance and specifications. CARQUEST or Airtex fuel pump modules offer OEM or better performance from an Original Equipment Supplier. The latest advancements in fuel delivery technology are built-in to every CARQUEST or Airtex Fuel Pump to deliver greater reliability. Product Features: Every single pump is 100% tested throughout the entire manufacturing process for worry free, out-of-the-box performance Triple barb hose fitting provides superior, long-lasting seal Superior return porting for optimum fuel flow Enhanced pump to flange harness design provides worry-free electrical performance Ceramic sender card and float arm that utilizes vehicle-specific geometry to ensure accurate fuel gauge readings for each and every application Gradient density, ... [Read more]

Store: Advance Auto Parts

Brand: Carquest Or Airtex

CARQUEST or Airtex Mechanical Fuel Pump - 1080
 

CARQUEST or Airtex Mechanical Fuel Pump - 1080

$39.99

Please note: Advance Auto Parts is proud to carry comparable exact-fit parts from multiple vendors, as such, the item you receive may be one of two quality brands. Both brands meet the same fitment requirements and are equal in their performance and specifications. CARQUEST or Airtex mechanical fuel pumps are the only mechanical fuel pumps manufactured in the USA. These pumps are precision-cast units designed to meet or exceed OEM specifications and are built with enhanced, long-lasting components. Product Features: Special heat treated rocker arms and case-hardened pins to ensure long-lasting performance Upgraded seals and pump diaphragms for compatibility with modern multi-fuel blends Every single pump is 100% tested throughout the entire manufacturing process for worry free, out-of-the-box performance. Most Fuel Pumps products are available for in-store pickup from Advance Auto Parts. [Read more]

Store: Advance Auto Parts

Brand: Carquest Or Airtex

Delphi Fuel Pump Module Assembly - FG0261
 

Delphi Fuel Pump Module Assembly - FG0261

$329.99

For more than a century, Delphi has been making the parts cars are born with - often developing new technologies in the process. Delphi is proud of its OE heritage, and over the years they†ve used that experience to expand into a global aftermarket supplier. Product Features: Internal springs increased durability and enhanced stability prevents tube chafing Lower amperage draws less load on vehicle's electrical system Fuel level gold-filled sensors provide improved resistance to sulfur corrosion and heat resistance Empty float height and float retention is to exact OE specifications guaranteeing correct gas gauge reading. Most Fuel Pumps products are available for in-store pickup from Advance Auto Parts. [Read more]

Store: Advance Auto Parts

Brand: Delphi

CARQUEST or Airtex Fuel Pump Module Assembly - E3950MN
 

CARQUEST or Airtex Fuel Pump Module Assembly - E3950MN

$272.99

Please note: Advance Auto Parts is proud to carry comparable exact-fit parts from multiple vendors, as such, the item you receive may be one of two quality brands. Both brands meet the same fitment requirements and are equal in their performance and specifications. CARQUEST or Airtex fuel pump modules offer OEM or better performance from an Original Equipment Supplier. The latest advancements in fuel delivery technology are built-in to every CARQUEST or Airtex Fuel Pump to deliver greater reliability. Product Features: Every single pump is 100% tested throughout the entire manufacturing process for worry free, out-of-the-box performance Triple barb hose fitting provides superior, long-lasting seal Superior return porting for optimum fuel flow Enhanced pump to flange harness design provides worry-free electrical performance Ceramic sender card and float arm that utilizes vehicle-specific geometry to ensure accurate fuel gauge readings for each and every application Gradient density, ... [Read more]

Store: Advance Auto Parts

Brand: Carquest Or Airtex

Cardone Remanufactured Power Steering Pump w/Reservoir - 20-657
 

Cardone Remanufactured Power Steering Pump w/Reservoir - 20-657

$53.29

A1 CARDONE power steering pumps are remanufactured to meet or exceed O.E. performance. Original designs are scrutinized for potential improvement, and where applicable, design upgrades are implemented to produce a more durable part than the original. All critical components are tested to ensure proper function. Every unit undergoes a hydraulic efficiency test to ensure reliable, long-lasting performance. Product Features: All units are built with 100% new O-rings and premium-grade Viton seals to prevent leaks. Viton does not break down at high temperatures like conventional seal material All critical components are triple-tested to ensure product reliability Every pump is computer tested to measure pressure, bypass, fluid flow, valve operation, steering effort and noise for guaranteed performance Units are supplied with 100% tested and calibrated pressure relief valves for guaranteed performance Shafts are surfaced to precise specifications to eliminate premature seal wear and ext... [Read more]

Store: Advance Auto Parts

Brand: Cardone

Bosch Electric Fuel Pump w/ Strainer - 68036
 

Bosch Electric Fuel Pump w/ Strainer - 68036

$18.49

Benchmark quality from the worldwide leader in fuel injection technology. Most Fuel Pump Components products are available for in-store pickup from Advance Auto Parts. [Read more]

Store: Advance Auto Parts

Brand: Bosch

CARQUEST or Airtex Electric Fuel Pump - E2337
 

CARQUEST or Airtex Electric Fuel Pump - E2337

$143.99

Please note: Advance Auto Parts is proud to carry comparable exact-fit parts from multiple vendors, as such, the item you receive may be one of two quality brands. Both brands meet the same fitment requirements and are equal in their performance and specifications. CARQUEST or Airtex enhanced electric in-tank fuel pumps are 100% quality tested and are designed to deliver quiet operation, industry-leading performance and durability. All CARQUEST or Airtex pumps meet or exceed OE specifications in fit, form and function. Product Features: Every single pump is 100% tested throughout the entire manufacturing process for worry free, out-of-the-box performance Advanced polymers, brushes and commutators to ensure long life and durability in multiple fuel blends. High-performance pump section assembly provides superior performance Leading-edge inlet design to increase performance and efficiency, leading to longer life High grade outer shell for life-long corrosion resistance Optimized, prec... [Read more]

Store: Advance Auto Parts

Brand: Carquest Or Airtex

Victor Tire Pump-Foot Pump w/ Gauge - 22-5-08901-8
 

Victor Tire Pump-Foot Pump w/ Gauge - 22-5-08901-8

$13.99

Tire Pump-Foot Pump w/ Gauge. Most Tire Repair products are available for in-store pickup from Advance Auto Parts. [Read more]

Store: Advance Auto Parts

Brand: Victor

Bosch Electric Fuel Pump w/ Strainer - 68044
 

Bosch Electric Fuel Pump w/ Strainer - 68044

$23.99

Benchmark quality from the worldwide leader in fuel injection technology. Most Fuel Pump Components products are available for in-store pickup from Advance Auto Parts. [Read more]

Store: Advance Auto Parts

Brand: Bosch

Delphi Electric Fuel Pump - FE0235
 

Delphi Electric Fuel Pump - FE0235

$142.99

For more than a century, Delphi has been making the parts cars are born with - often developing new technologies in the process. Delphi is proud of its OE heritage, and over the years they†ve used that experience to expand into a global aftermarket supplier. Product Features: Lower amperage draw means less load on vehicle's electrical system Restores fast pressure performance and system integrity, translating to better pumping through less energy Lower failure rates due to its innovative design and durability Delphi pumps are designed to operate under extreme temperatures with quick engine starts and to avoid low-fuel hesitation, including alcohol fuels and blends. Most Fuel Pumps products are available for in-store pickup from Advance Auto Parts. [Read more]

Store: Advance Auto Parts

Brand: Delphi

CARQUEST or Airtex Electric Fuel Pump - E2042
 

CARQUEST or Airtex Electric Fuel Pump - E2042

$67.99

Please note: Advance Auto Parts is proud to carry comparable exact-fit parts from multiple vendors, as such, the item you receive may be one of two quality brands. Both brands meet the same fitment requirements and are equal in their performance and specifications. CARQUEST or Airtex enhanced electric in-tank fuel pumps are 100% quality tested and are designed to deliver quiet operation, industry-leading performance and durability. All CARQUEST or Airtex pumps meet or exceed OE specifications in fit, form and function. Product Features: Every single pump is 100% tested throughout the entire manufacturing process for worry free, out-of-the-box performance Advanced polymers, brushes and commutators to ensure long life and durability in multiple fuel blends. High-performance pump section assembly provides superior performance Leading-edge inlet design to increase performance and efficiency, leading to longer life High grade outer shell for life-long corrosion resistance Optimized, prec... [Read more]

Store: Advance Auto Parts

Brand: Carquest Or Airtex

CARQUEST or Airtex Mechanical Fuel Pump - 1002
 

CARQUEST or Airtex Mechanical Fuel Pump - 1002

$41.99

Please note: Advance Auto Parts is proud to carry comparable exact-fit parts from multiple vendors, as such, the item you receive may be one of two quality brands. Both brands meet the same fitment requirements and are equal in their performance and specifications. CARQUEST or Airtex mechanical fuel pumps are the only mechanical fuel pumps manufactured in the USA. These pumps are precision-cast units designed to meet or exceed OEM specifications and are built with enhanced, long-lasting components. Product Features: Special heat treated rocker arms and case-hardened pins to ensure long-lasting performance Upgraded seals and pump diaphragms for compatibility with modern multi-fuel blends Every single pump is 100% tested throughout the entire manufacturing process for worry free, out-of-the-box performance. Most Fuel Pumps products are available for in-store pickup from Advance Auto Parts. [Read more]

Store: Advance Auto Parts

Brand: Carquest Or Airtex

CARQUEST or Airtex Electric Fuel Pump - E2000
 

CARQUEST or Airtex Electric Fuel Pump - E2000

$85.99

Please note: Advance Auto Parts is proud to carry comparable exact-fit parts from multiple vendors, as such, the item you receive may be one of two quality brands. Both brands meet the same fitment requirements and are equal in their performance and specifications. CARQUEST or Airtex enhanced electric in-line fuel pumps are 100% quality tested and are designed to deliver quiet operation, industry-leading performance and durability. All CARQUEST or Airtex pumps meet or exceed OE specifications in fit, form and function. Product Features: Every single pump is 100% tested throughout the entire manufacturing process for worry free, out-of-the-box performance Advanced polymers, brushes and commutators to ensure long life and durability in multiple fuel blends. High-performance pump section assembly provides superior performance Leading-edge inlet design to increase performance and efficiency, leading to longer life High grade outer shell for life-long corrosion resistance Optimized, prec... [Read more]

Store: Advance Auto Parts

Brand: Carquest Or Airtex

CARQUEST or Airtex Fuel Pump Module Assembly - E3954MN
 

CARQUEST or Airtex Fuel Pump Module Assembly - E3954MN

$235.99

Please note: Advance Auto Parts is proud to carry comparable exact-fit parts from multiple vendors, as such, the item you receive may be one of two quality brands. Both brands meet the same fitment requirements and are equal in their performance and specifications. CARQUEST or Airtex fuel pump modules offer OEM or better performance from an Original Equipment Supplier. The latest advancements in fuel delivery technology are built-in to every CARQUEST or Airtex Fuel Pump to deliver greater reliability. Product Features: Every single pump is 100% tested throughout the entire manufacturing process for worry free, out-of-the-box performance Triple barb hose fitting provides superior, long-lasting seal Superior return porting for optimum fuel flow Enhanced pump to flange harness design provides worry-free electrical performance Ceramic sender card and float arm that utilizes vehicle-specific geometry to ensure accurate fuel gauge readings for each and every application Gradient density, ... [Read more]

Store: Advance Auto Parts

Brand: Carquest Or Airtex

Spectra Premium Fuel Pump and Tank Assembly Includes Fuel Tank, Fuel Pump Pre-Installed In Tank and Mounting Straps - F1G1FA
 

Spectra Premium Fuel Pump and Tank Assembly Includes Fuel Tank, Fuel Pump Pre-Installed In Tank and Mounting Straps - F1G1FA

$289.99

Innovative engineering, manufacturing technology and quality control ensure that Spectra Premium fuel tank assemblies meet or exceed the performance of the original equipment they replace. Product Features: Unit is designed to OE fit, form and function requirements accomplished by leveraging our OE fuel system design expertise Reduce labor time up to 52% by using our fuel tank assembly which includes the fuel tank, fuel tank straps and fuel pump Designed to ensure a debris free, clean fuel system upon replacement Fuel tanks made with corrosion resistant, OE approved, Ni Terne steel Proudly manufactured in Canada under stringent quality systems (QS-9000 and ISO 9002). Most Fuel Injection Pumps products are available for in-store pickup from Advance Auto Parts. [Read more]

Store: Advance Auto Parts

Brand: Spectra Premium

Felpro Water Pump Gasket - 35558
 

Felpro Water Pump Gasket - 35558

$0.99

From the leader in aftermarket engine sealing, FEL-PRO the gaskets professionals trust. Product Features: Each gasket, set, or seal is built to meet or exceed all original equipment specifications and is validated for fit, form, and function Application specific design to ensure a perfect fit and correct operation for unsurpassed quality that you can trust FEL-PRO gasket sets are engineered and manufactured specifically for the aftermarket repair environment Every part for the repair procedure is included in the kit unless otherwise noted. Most Water Pump Gaskets products are available for in-store pickup from Advance Auto Parts. [Read more]

Store: Advance Auto Parts

Brand: Felpro

Delphi Fuel Pump Module Assembly - FG0175
 

Delphi Fuel Pump Module Assembly - FG0175

$316.99

For more than a century, Delphi has been making the parts cars are born with - often developing new technologies in the process. Delphi is proud of its OE heritage, and over the years they†ve used that experience to expand into a global aftermarket supplier. Product Features: Internal springs increased durability and enhanced stability prevents tube chafing Lower amperage draws less load on vehicle's electrical system Fuel level gold-filled sensors provide improved resistance to sulfur corrosion and heat resistance Empty float height and float retention is to exact OE specifications guaranteeing correct gas gauge reading. Most Fuel Pumps products are available for in-store pickup from Advance Auto Parts. [Read more]

Store: Advance Auto Parts

Brand: Delphi

CARQUEST or Airtex Mechanical Fuel Pump - 60237
 

CARQUEST or Airtex Mechanical Fuel Pump - 60237

$29.99

Please note: Advance Auto Parts is proud to carry comparable exact-fit parts from multiple vendors, as such, the item you receive may be one of two quality brands. Both brands meet the same fitment requirements and are equal in their performance and specifications. CARQUEST or Airtex mechanical fuel pumps are the only mechanical fuel pumps manufactured in the USA. These pumps are precision-cast units designed to meet or exceed OEM specifications and are built with enhanced, long-lasting components. Product Features: Special heat treated rocker arms and case-hardened pins to ensure long-lasting performance Upgraded seals and pump diaphragms for compatibility with modern multi-fuel blends Every single pump is 100% tested throughout the entire manufacturing process for worry free, out-of-the-box performance. Most Fuel Pumps products are available for in-store pickup from Advance Auto Parts. [Read more]

Store: Advance Auto Parts

Brand: Carquest Or Airtex

Powercraft Pump Seal Kit - 8820
 

Powercraft Pump Seal Kit - 8820

$21.51

Premium-quality parts for lasting repairs. Engineered to OE design and specifications. Most Power Steering Seals products are available for in-store pickup from Advance Auto Parts. [Read more]

Store: Advance Auto Parts

Brand: Powercraft

Cardone Smog Air Pump - Remanufactured - 32-403
 

Cardone Smog Air Pump - Remanufactured - 32-403

$129.99

Product Features: 100% testing of all units ensures reliable performance every time. High temperature grease extends bearing life, resulting in longer pump life. New carbon shoes/vanes on every unit ensure accurate air output to meet today's stringent emissions standards. Most Smog Pumps & Pulleys products are available for in-store pickup from Advance Auto Parts. [Read more]

Store: Advance Auto Parts

Brand: Cardone

Powercraft Pump Seal Kit - 9061
 

Powercraft Pump Seal Kit - 9061

$6.14

Premium-quality parts for lasting repairs. Engineered to OE design and specifications. Most Power Steering Seals products are available for in-store pickup from Advance Auto Parts. [Read more]

Store: Advance Auto Parts

Brand: Powercraft

CARQUEST or Airtex Electric Fuel Pump - E7154
 

CARQUEST or Airtex Electric Fuel Pump - E7154

$125.99

Please note: Advance Auto Parts is proud to carry comparable exact-fit parts from multiple vendors, as such, the item you receive may be one of two quality brands. Both brands meet the same fitment requirements and are equal in their performance and specifications. CARQUEST or Airtex enhanced electric in-tank fuel pumps are 100% quality tested and are designed to deliver quiet operation, industry-leading performance and durability. All CARQUEST or Airtex pumps meet or exceed OE specifications in fit, form and function. Product Features: Every single pump is 100% tested throughout the entire manufacturing process for worry free, out-of-the-box performance Advanced polymers, brushes and commutators to ensure long life and durability in multiple fuel blends. High-performance pump section assembly provides superior performance Leading-edge inlet design to increase performance and efficiency, leading to longer life High grade outer shell for life-long corrosion resistance Optimized, prec... [Read more]

Store: Advance Auto Parts

Brand: Carquest Or Airtex

Felpro Water Pump Gasket - 35501
 

Felpro Water Pump Gasket - 35501

$2.69

From the leader in aftermarket engine sealing, FEL-PRO the gaskets professionals trust. Product Features: Each gasket, set, or seal is built to meet or exceed all original equipment specifications and is validated for fit, form, and function Application specific design to ensure a perfect fit and correct operation for unsurpassed quality that you can trust FEL-PRO gasket sets are engineered and manufactured specifically for the aftermarket repair environment Every part for the repair procedure is included in the kit unless otherwise noted. Most Water Pump Gaskets products are available for in-store pickup from Advance Auto Parts. [Read more]

Store: Advance Auto Parts

Brand: Felpro

CARQUEST or Airtex Mechanical Fuel Pump - 901
 

CARQUEST or Airtex Mechanical Fuel Pump - 901

$31.99

Please note: Advance Auto Parts is proud to carry comparable exact-fit parts from multiple vendors, as such, the item you receive may be one of two quality brands. Both brands meet the same fitment requirements and are equal in their performance and specifications. CARQUEST or Airtex mechanical fuel pumps are the only mechanical fuel pumps manufactured in the USA. These pumps are precision-cast units designed to meet or exceed OEM specifications and are built with enhanced, long-lasting components. Product Features: Special heat treated rocker arms and case-hardened pins to ensure long-lasting performance Upgraded seals and pump diaphragms for compatibility with modern multi-fuel blends Every single pump is 100% tested throughout the entire manufacturing process for worry free, out-of-the-box performance. Most Fuel Pumps products are available for in-store pickup from Advance Auto Parts. [Read more]

Store: Advance Auto Parts

Brand: Carquest Or Airtex

CARQUEST or Airtex Fuel Pump Module Assembly - E3572M
 

CARQUEST or Airtex Fuel Pump Module Assembly - E3572M

$272.99

Please note: Advance Auto Parts is proud to carry comparable exact-fit parts from multiple vendors, as such, the item you receive may be one of two quality brands. Both brands meet the same fitment requirements and are equal in their performance and specifications. CARQUEST or Airtex fuel pump modules offer OEM or better performance from an Original Equipment Supplier. The latest advancements in fuel delivery technology are built-in to every CARQUEST or Airtex Fuel Pump to deliver greater reliability. Product Features: Every single pump is 100% tested throughout the entire manufacturing process for worry free, out-of-the-box performance Triple barb hose fitting provides superior, long-lasting seal Superior return porting for optimum fuel flow Enhanced pump to flange harness design provides worry-free electrical performance Ceramic sender card and float arm that utilizes vehicle-specific geometry to ensure accurate fuel gauge readings for each and every application Gradient density, ... [Read more]

Store: Advance Auto Parts

Brand: Carquest Or Airtex

Cardone Remanufactured Power Steering Pump w/Reservoir - 20-7823
 

Cardone Remanufactured Power Steering Pump w/Reservoir - 20-7823

$45.09

A1 CARDONE power steering pumps are remanufactured to meet or exceed O.E. performance. Original designs are scrutinized for potential improvement, and where applicable, design upgrades are implemented to produce a more durable part than the original. All critical components are tested to ensure proper function. Every unit undergoes a hydraulic efficiency test to ensure reliable, long-lasting performance. Product Features: All units are built with 100% new O-rings and premium-grade Viton seals to prevent leaks. Viton does not break down at high temperatures like conventional seal material All critical components are triple-tested to ensure product reliability Every pump is computer tested to measure pressure, bypass, fluid flow, valve operation, steering effort and noise for guaranteed performance Units are supplied with 100% tested and calibrated pressure relief valves for guaranteed performance Shafts are surfaced to precise specifications to eliminate premature seal wear and ext... [Read more]

Store: Advance Auto Parts

Brand: Cardone

Mr. Gasket Electric Fuel Pump - 12S
 

Mr. Gasket Electric Fuel Pump - 12S

$46.99

Mr. Gasket's high performance electric fuel pump is a direct bolt-on replacement for Holley Fuel Pump. Our products are 100 percent pressure tested for guaranteed performance and reliability. Features an in-line style rotor and vane pump design and 3/8 inch NPT inlet and outlet. This lightweight pump includes mounting bracket and hardware and is universal for all carbureted engines. Product Features: Eliminates Vapor Lock And Flooding Self Priming Includes Fittings And Hardware. Most Fuel Pumps products are available for in-store pickup from Advance Auto Parts. [Read more]

Store: Advance Auto Parts

Brand: Mr. Gasket

CARQUEST or Airtex Mechanical Fuel Pump - 40001
 

CARQUEST or Airtex Mechanical Fuel Pump - 40001

$33.99

Please note: Advance Auto Parts is proud to carry comparable exact-fit parts from multiple vendors, as such, the item you receive may be one of two quality brands. Both brands meet the same fitment requirements and are equal in their performance and specifications. CARQUEST or Airtex mechanical fuel pumps are the only mechanical fuel pumps manufactured in the USA. These pumps are precision-cast units designed to meet or exceed OEM specifications and are built with enhanced, long-lasting components. Product Features: Special heat treated rocker arms and case-hardened pins to ensure long-lasting performance Upgraded seals and pump diaphragms for compatibility with modern multi-fuel blends Every single pump is 100% tested throughout the entire manufacturing process for worry free, out-of-the-box performance. Most Fuel Pumps products are available for in-store pickup from Advance Auto Parts. [Read more]

Store: Advance Auto Parts

Brand: Carquest Or Airtex

CARQUEST or Airtex Fuel Pump Sender Assembly - E2103S
 

CARQUEST or Airtex Fuel Pump Sender Assembly - E2103S

$107.99

Please note: Advance Auto Parts is proud to carry comparable exact-fit parts from multiple vendors, as such, the item you receive may be one of two quality brands. Both brands meet the same fitment requirements and are equal in their performance and specifications. CARQUEST or Airtex fuel pump sender assemblies feature exact fit, with design improvements, such as upgraded polymers, brushes, and commutators to ensure lasting durability in multiple fuel blends. Also features advanced rust-inhibiting finish for longer life. Product Features: Every single pump is 100% tested throughout the entire manufacturing process for worry free, out-of-the-box performance Advanced rust-inhibiting finish for long-lasting durability High-performance pump section assembly provides superior performance Leading-edge inlet design to reduce friction and increase performance Gradient density strainer designed for better contamination resistance. Most Fuel Pumps products are available for in-store pickup fr... [Read more]

Store: Advance Auto Parts

Brand: Carquest Or Airtex

Weiand Team G; Water Pump Pulley Spacer Kit - 8230
 

Weiand Team G; Water Pump Pulley Spacer Kit - 8230

$29.99

Set of three. This universal kit works with just about any GM or Ford water pump either with a 5/8 inch or 3/4 inch shaft. Fits between the water pump pulley and drive flange. Contains two 1/16 inch shims and a 1/8 inch shim. Allows placement of water pump pulley in perfect alignment with other components. Product Features: Set Of Three Two 0.0625 in. Shims One 0.125 in. Shim Perfect Alignment. Most Water Pumps products are available for in-store pickup from Advance Auto Parts. [Read more]

Store: Advance Auto Parts

Brand: Weiand

CARQUEST or Airtex Mechanical Fuel Pump - 4269
 

CARQUEST or Airtex Mechanical Fuel Pump - 4269

$87.99

Please note: Advance Auto Parts is proud to carry comparable exact-fit parts from multiple vendors, as such, the item you receive may be one of two quality brands. Both brands meet the same fitment requirements and are equal in their performance and specifications. CARQUEST or Airtex mechanical fuel pumps are the only mechanical fuel pumps manufactured in the USA. These pumps are precision-cast units designed to meet or exceed OEM specifications and are built with enhanced, long-lasting components. Product Features: Special heat treated rocker arms and case-hardened pins to ensure long-lasting performance Upgraded seals and pump diaphragms for compatibility with modern multi-fuel blends Every single pump is 100% tested throughout the entire manufacturing process for worry free, out-of-the-box performance. Most Fuel Pumps products are available for in-store pickup from Advance Auto Parts. [Read more]

Store: Advance Auto Parts

Brand: Carquest Or Airtex

CARQUEST or Airtex Fuel Pump Module Assembly - E7138M
 

CARQUEST or Airtex Fuel Pump Module Assembly - E7138M

$221.99

Please note: Advance Auto Parts is proud to carry comparable exact-fit parts from multiple vendors, as such, the item you receive may be one of two quality brands. Both brands meet the same fitment requirements and are equal in their performance and specifications. CARQUEST or Airtex fuel pump modules offer OEM or better performance from an Original Equipment Supplier. The latest advancements in fuel delivery technology are built-in to every CARQUEST or Airtex Fuel Pump to deliver greater reliability. Product Features: Every single pump is 100% tested throughout the entire manufacturing process for worry free, out-of-the-box performance Triple barb hose fitting provides superior, long-lasting seal Superior return porting for optimum fuel flow Enhanced pump to flange harness design provides worry-free electrical performance Ceramic sender card and float arm that utilizes vehicle-specific geometry to ensure accurate fuel gauge readings for each and every application Gradient density, ... [Read more]

Store: Advance Auto Parts

Brand: Carquest Or Airtex

RobinAir CoolTech 6 CFM Two Stage Vacuum Pump - ROB15600
 

RobinAir CoolTech 6 CFM Two Stage Vacuum Pump - ROB15600

$506.99

Iso-Valve isolates pump from system, making it easy to measure rate of rise Two stage design means faster and higher vacuum level Inlet feature prevents pump contamination Gas ballast keeps oil clean and dry Evacuates today's tighter systems with their increased sensitivity to contaminants Heavy duty 1/2 HP motor evacuates today's tighter systems with their increased sensitivity to contaminants. Offset rotary vanes work in conjunction with the vacuum pump oil to create a powerful compression inside the pumping chamber. Vacuum pump efficiency depends largely on the purity of the vacuum pump oil. The gas ballast feature helps keep the oil clean for a longer time by introducing a small amount of dry atmospheric air to prevent condensation of moisture within the pumping chamber. Two stage design for greater efficiency-the second stage of the two-stage design starts pumping at a lower pressure to pull a deeper ultimate vacuum. The inlet filter prevents contaminants from entering the pump... [Read more]

Store: Advance Auto Parts

Brand: Robinair

CARQUEST or Airtex Electric Fuel Pump - E2448
 

CARQUEST or Airtex Electric Fuel Pump - E2448

$69.99

Please note: Advance Auto Parts is proud to carry comparable exact-fit parts from multiple vendors, as such, the item you receive may be one of two quality brands. Both brands meet the same fitment requirements and are equal in their performance and specifications. CARQUEST or Airtex enhanced electric in-tank fuel pumps are 100% quality tested and are designed to deliver quiet operation, industry-leading performance and durability. All CARQUEST or Airtex pumps meet or exceed OE specifications in fit, form and function. Product Features: Every single pump is 100% tested throughout the entire manufacturing process for worry free, out-of-the-box performance Advanced polymers, brushes and commutators to ensure long life and durability in multiple fuel blends. High-performance pump section assembly provides superior performance Leading-edge inlet design to increase performance and efficiency, leading to longer life High grade outer shell for life-long corrosion resistance Optimized, prec... [Read more]

Store: Advance Auto Parts

Brand: Carquest Or Airtex

Spectra Premium Sender; Includes Fuel Sender, Float and Strainer (Fuel Pump Not Included) - FG05F
 

Spectra Premium Sender; Includes Fuel Sender, Float and Strainer (Fuel Pump Not Included) - FG05F

$41.99

Innovative engineering, manufacturing technology and quality control ensure that Spectra Premium fuel sending units meet or exceed the performance of the original equipment they replace. Product Features: Unit is designed to OE fit, form and function requirements accomplished by leveraging our OE fuel system design expertise Precision tested fuel level sensors ensures vehicles fuel gage will provide an accurate reading at any fuel level Includes strainers for smoother installation process and ensures a clean fuel system upon replacement Engineered to stringent tolerances based on our Canadian engineers†in-depth knowledge of the OE part it†s designed to replace. Most Fuel Tank Sending Units products are available for in-store pickup from Advance Auto Parts. [Read more]

Store: Advance Auto Parts

Brand: Spectra Premium

Bosch Electrical Fuel Pump - 67928
 

Bosch Electrical Fuel Pump - 67928

$476.99

All Bosch fuel pumps conform to an "OE or greater" standard for fit, form and function. This means you get a long-lasting, high-performing pump that fits right the first time. Most Fuel Pumps products are available for in-store pickup from Advance Auto Parts. [Read more]

Store: Advance Auto Parts

Brand: Bosch

Bosch Electrical Fuel Pump Kit - 69131
 

Bosch Electrical Fuel Pump Kit - 69131

$98.99

All Bosch fuel pumps conform to an "OE or greater" standard for fit, form and function. This means you get a long-lasting, high-performing pump that fits right the first time. Product Features: OE Fit OE Form OE Function. Most Fuel Pumps products are available for in-store pickup from Advance Auto Parts. [Read more]

Store: Advance Auto Parts

Brand: Bosch

Cardone ABS Pump/Motor - Remanufactured - 12-4102
 

Cardone ABS Pump/Motor - Remanufactured - 12-4102

$437.49

Product Features: 100% computer testing ensures consistent performance. Field testing further ensures product reliability. Air-decay testing ensures zero brake fluid leakage for consistent performance. High-pressure hydraulic testing ensures zero leakage for long-lasting performance. Most ABS Pump & Motor Assemblies products are available for in-store pickup from Advance Auto Parts. [Read more]

Store: Advance Auto Parts

Brand: Cardone

Holley Electric Fuel Pump; In-Tank Electric Fuel Pump - 12-901
 

Holley Electric Fuel Pump; In-Tank Electric Fuel Pump - 12-901

$144.99

The Holley line of high output in-tank electric fuel pumps is available in flow ratings of 190 and 255 liters of fuel per hour. A 155 liter per hour Mustang pump is available along with 255 liter-per-hour-rated pumps for forced induction applications. These particular pumps flow significantly more fuel at higher pressure. For example, at 80 PSI the standard 255 lph pump will flow around 132 liters (35 gallons) per hour. At that same 80 PSI the equivalent forced induction fuel pump will flow over 210 liters (50 gallons) per hour. The chart here aptly illustrates the capabilities of the Holley in-tank electric fuel pumps. Holley in-tank electric fuel pumps utilize a proven gerotor design. The outside dimensions, however, are compact enough to fit existing hanger assemblies, without modification. Coverage includes most popular Ford, General Motors, Chrysler and Import applications. These are complete fuel pump kits and include all drop parts, accessories and installation instructions. ... [Read more]

Store: Advance Auto Parts

Brand: Holley

CARQUEST or Airtex Mechanical Fuel Pump - 1324
 

CARQUEST or Airtex Mechanical Fuel Pump - 1324

$46.99

Please note: Advance Auto Parts is proud to carry comparable exact-fit parts from multiple vendors, as such, the item you receive may be one of two quality brands. Both brands meet the same fitment requirements and are equal in their performance and specifications. CARQUEST or Airtex mechanical fuel pumps are the only mechanical fuel pumps manufactured in the USA. These pumps are precision-cast units designed to meet or exceed OEM specifications and are built with enhanced, long-lasting components. Product Features: Special heat treated rocker arms and case-hardened pins to ensure long-lasting performance Upgraded seals and pump diaphragms for compatibility with modern multi-fuel blends Every single pump is 100% tested throughout the entire manufacturing process for worry free, out-of-the-box performance. Most Fuel Pumps products are available for in-store pickup from Advance Auto Parts. [Read more]

Store: Advance Auto Parts

Brand: Carquest Or Airtex

Beck/Arnley Electric Fuel Pump - 152-0253
 

Beck/Arnley Electric Fuel Pump - 152-0253

$801.79

Designed and manufactured to strict OE standards and subjected to rigorous safety and performance tests. Helps restore proper pressure and functionality to the vehicle's fuel and emissions system. Most Fuel Pumps products are available for in-store pickup from Advance Auto Parts. [Read more]

Store: Advance Auto Parts

Brand: Beck/Arnley

Cardone Remanufactured Power Steering Pump w/Reservoir - 20-655
 

Cardone Remanufactured Power Steering Pump w/Reservoir - 20-655

$44.06

A1 CARDONE power steering pumps are remanufactured to meet or exceed O.E. performance. Original designs are scrutinized for potential improvement, and where applicable, design upgrades are implemented to produce a more durable part than the original. All critical components are tested to ensure proper function. Every unit undergoes a hydraulic efficiency test to ensure reliable, long-lasting performance. Product Features: All units are built with 100% new O-rings and premium-grade Viton seals to prevent leaks. Viton does not break down at high temperatures like conventional seal material All critical components are triple-tested to ensure product reliability Every pump is computer tested to measure pressure, bypass, fluid flow, valve operation, steering effort and noise for guaranteed performance Units are supplied with 100% tested and calibrated pressure relief valves for guaranteed performance Shafts are surfaced to precise specifications to eliminate premature seal wear and ext... [Read more]

Store: Advance Auto Parts

Brand: Cardone

CARQUEST or Airtex Mechanical Fuel Pump - 6959
 

CARQUEST or Airtex Mechanical Fuel Pump - 6959

$29.99

Please note: Advance Auto Parts is proud to carry comparable exact-fit parts from multiple vendors, as such, the item you receive may be one of two quality brands. Both brands meet the same fitment requirements and are equal in their performance and specifications. CARQUEST or Airtex mechanical fuel pumps are the only mechanical fuel pumps manufactured in the USA. These pumps are precision-cast units designed to meet or exceed OEM specifications and are built with enhanced, long-lasting components. Product Features: Special heat treated rocker arms and case-hardened pins to ensure long-lasting performance Upgraded seals and pump diaphragms for compatibility with modern multi-fuel blends Every single pump is 100% tested throughout the entire manufacturing process for worry free, out-of-the-box performance. Most Fuel Pumps products are available for in-store pickup from Advance Auto Parts. [Read more]

Store: Advance Auto Parts

Brand: Carquest Or Airtex

CARQUEST or Airtex Mechanical Fuel Pump - 1070
 

CARQUEST or Airtex Mechanical Fuel Pump - 1070

$58.99

Please note: Advance Auto Parts is proud to carry comparable exact-fit parts from multiple vendors, as such, the item you receive may be one of two quality brands. Both brands meet the same fitment requirements and are equal in their performance and specifications. CARQUEST or Airtex mechanical fuel pumps are the only mechanical fuel pumps manufactured in the USA. These pumps are precision-cast units designed to meet or exceed OEM specifications and are built with enhanced, long-lasting components. Product Features: Special heat treated rocker arms and case-hardened pins to ensure long-lasting performance Upgraded seals and pump diaphragms for compatibility with modern multi-fuel blends Every single pump is 100% tested throughout the entire manufacturing process for worry free, out-of-the-box performance. Most Fuel Pumps products are available for in-store pickup from Advance Auto Parts. [Read more]

Store: Advance Auto Parts

Brand: Carquest Or Airtex

Edelbrock High Performance In-Tank; Fuel Pump - 17935
 

Edelbrock High Performance In-Tank; Fuel Pump - 17935

$162.99

Product Features: OE IN-Tank Upgrade Pumps Ideal For Supporting Performance Improvements Replace Original Pump Exactly Include All Necessary Hardware Easy Installation. Most Fuel Pumps & Tanks products are available for in-store pickup from Advance Auto Parts. [Read more]

Store: Advance Auto Parts

Brand: Edelbrock

Cardone Vacuum Pump - Remanufactured - 64-1000
 

Cardone Vacuum Pump - Remanufactured - 64-1000

$259.99

Product Features: 100% computer testing ensures reliable performance. 100% new check valves, diaphragms, O-rings and seals prevent leaks and ensure proper vacuum required to efficiently run vehicle accessories. Most Vacuum Parts products are available for in-store pickup from Advance Auto Parts. [Read more]

Store: Advance Auto Parts

Brand: Cardone

AutoCraft 5 pc Power Steering Pump Pulley Kit - AC525
 

AutoCraft 5 pc Power Steering Pump Pulley Kit - AC525

$32.99

Ideal for removing and fitting power steering pump pulleys. Product Contents: Power Steering Pump Pulley Installer Power Steering Pump Alternator Pulley Puller Extended Shaft Forcing Screw 8mm Forcing Screw Fuel Disconnect Tool Product Features: Suitable for most GM, Chrysler and Ford vehicles. Most Other Specialty Tools products are available for in-store pickup from Advance Auto Parts. [Read more]

Store: Advance Auto Parts

Brand: Autocraft

1 Gallon Slime Tubeless Sealant with Pump - SDSB-1G/02
 

1 Gallon Slime Tubeless Sealant with Pump - SDSB-1G/02

$29.99

Slime's Fibro-Seal Technology seeks out punctures as they occur to repair flats before you even know they happened. As the Slime-treated tire rotates, centrifugal force pushes the sealant to the tread area to create a layer of protection, repairing punctures as they occur or treating existing punctures. Slime utilizes a state-of-the-art blend of environmentally friendly fibers, binders, polymers and proprietary congealing agents which intertwine and clot within the puncture. This Fibro-Seal lattice, together with the viscous delivery system (the "green" goo) seeks out and tightly packs itself into the puncture, preventing and repairing flats with a flexible, long-lasting plug. Slime Sealant can be pre-installed into any tubeless tire, but is recommended as a repair-only in passenger vehicle tires. Product Features: Repairs punctures up to 1/4" (6 mm) using Fibro-Seal Technology Remains liquid inside the tire, coating the tread area as the tire rotates for up to 2 year... [Read more]

Store: Advance Auto Parts

Brand: Slime

Felpro Oil Pump Gasket - 11792
 

Felpro Oil Pump Gasket - 11792

$0.89

From the leader in aftermarket engine sealing, FEL-PRO the gaskets professionals trust. Product Features: Each gasket, set, or seal is built to meet or exceed all original equipment specifications and is validated for fit, form, and function Application specific design to ensure a perfect fit and correct operation for unsurpassed quality that you can trust FEL-PRO gasket sets are engineered and manufactured specifically for the aftermarket repair environment Every part for the repair procedure is included in the kit unless otherwise noted. Most Oil Pans, Pumps & Parts products are available for in-store pickup from Advance Auto Parts. [Read more]

Store: Advance Auto Parts

Brand: Felpro

Melling Stock Replacement Oil Pump - M-81
 

Melling Stock Replacement Oil Pump - M-81

$62.99

Melling oil pumps provide dependable performance every time in every application. Every pump is engineered, manufactured and assembled to the highest material and production standards. Manufacturing processes include state of the art CNC machines and the latest phosphate coating processes. Melling oil pumps are manufactured from high quality materials in either cast iron or cast aluminum as specified by the OEM engine manufacturer. Internal pump parts are produced from sintered metal or steel. Gears are machined to close tolerances to ensure proper engine pressure and correct, efficient pump operation. End plates are precision ground for maximum ware resistance. Depending on application and design, Melling pumps may use gear, impeller or the latest gerotor technology. When completed every Melling oil pump is individually tested for pressure and flow under conditions designed to duplicate actual engine operating conditions. In addition to OEM pump applications, Melling Select pumps a... [Read more]

Store: Advance Auto Parts

Brand: Melling

Melling Stock Replacement Oil Pump Screen - 305S
 

Melling Stock Replacement Oil Pump Screen - 305S

$12.99

A new Melling pick-up tube/oil screen assembly provides the lubrication oil as well as protection for your oil pump from materials that find their way into the engine oil supply system. Contaminates enter your oil system via engine ware, extended time between oil changes and other internal engine sources. These contaminates can interfere with the proper oil flow and pressure spring functions resulting in engine damage and/or failure. Melling suggests that a new properly installed oil pump pick-up tube/screen be a part of every oil pump installation. Several Melling oil pump applications are offered with an oil screen included. Product Features: Meets or exceeds OE specifications Precision manufactured from high quality materials for long wear 1 year limited warranty. Most Oil Pans, Pumps & Parts products are available for in-store pickup from Advance Auto Parts. [Read more]

Store: Advance Auto Parts

Brand: Melling

CARQUEST or Airtex Electric Fuel Pump - E7006
 

CARQUEST or Airtex Electric Fuel Pump - E7006

$75.99

Please note: Advance Auto Parts is proud to carry comparable exact-fit parts from multiple vendors, as such, the item you receive may be one of two quality brands. Both brands meet the same fitment requirements and are equal in their performance and specifications. CARQUEST or Airtex enhanced electric in-tank fuel pumps are 100% quality tested and are designed to deliver quiet operation, industry-leading performance and durability. All CARQUEST or Airtex pumps meet or exceed OE specifications in fit, form and function. Product Features: Every single pump is 100% tested throughout the entire manufacturing process for worry free, out-of-the-box performance Advanced polymers, brushes and commutators to ensure long life and durability in multiple fuel blends. High-performance pump section assembly provides superior performance Leading-edge inlet design to increase performance and efficiency, leading to longer life High grade outer shell for life-long corrosion resistance Optimized, prec... [Read more]

Store: Advance Auto Parts

Brand: Carquest Or Airtex

CARQUEST or Airtex Electric Fuel Pump - E8012S
 

CARQUEST or Airtex Electric Fuel Pump - E8012S

$44.99

Please note: Advance Auto Parts is proud to carry comparable exact-fit parts from multiple vendors, as such, the item you receive may be one of two quality brands. Both brands meet the same fitment requirements and are equal in their performance and specifications. CARQUEST or Airtex enhanced universal electric fuel pumps are 100% quality tested and are designed to deliver quiet operation, industry-leading performance and durability. All CARQUEST or Airtex pumps meet or exceed OE specifications in fit, form and function. Product Features: Every single pump is 100% tested throughout the entire manufacturing process for worry free, out-of-the-box performance Advanced polymers, brushes and commutators to ensure long life and durability in multiple fuel blends. Leading-edge inlet design to increase performance and efficiency, leading to longer life High grade outer shell for life-long corrosion resistance Optimized, precision-wound armature assembly for increased performance High-perfor... [Read more]

Store: Advance Auto Parts

Brand: Carquest Or Airtex

CARQUEST or Airtex Fuel Pump Sender Assembly - E3625S
 

CARQUEST or Airtex Fuel Pump Sender Assembly - E3625S

$96.99

Please note: Advance Auto Parts is proud to carry comparable exact-fit parts from multiple vendors, as such, the item you receive may be one of two quality brands. Both brands meet the same fitment requirements and are equal in their performance and specifications. CARQUEST or Airtex fuel pump sender assemblies feature exact fit, with design improvements, such as upgraded polymers, brushes, and commutators to ensure lasting durability in multiple fuel blends. Also features advanced rust-inhibiting finish for longer life. Product Features: Every single pump is 100% tested throughout the entire manufacturing process for worry free, out-of-the-box performance Advanced rust-inhibiting finish for long-lasting durability High-performance pump section assembly provides superior performance Leading-edge inlet design to reduce friction and increase performance Gradient density strainer designed for better contamination resistance. Most Fuel Pumps products are available for in-store pickup fr... [Read more]

Store: Advance Auto Parts

Brand: Carquest Or Airtex

CARQUEST or Airtex Mechanical Fuel Pump - 4754
 

CARQUEST or Airtex Mechanical Fuel Pump - 4754

$66.99

Please note: Advance Auto Parts is proud to carry comparable exact-fit parts from multiple vendors, as such, the item you receive may be one of two quality brands. Both brands meet the same fitment requirements and are equal in their performance and specifications. CARQUEST or Airtex mechanical fuel pumps are the only mechanical fuel pumps manufactured in the USA. These pumps are precision-cast units designed to meet or exceed OEM specifications and are built with enhanced, long-lasting components. Product Features: Special heat treated rocker arms and case-hardened pins to ensure long-lasting performance Upgraded seals and pump diaphragms for compatibility with modern multi-fuel blends Every single pump is 100% tested throughout the entire manufacturing process for worry free, out-of-the-box performance. Most Fuel Pumps products are available for in-store pickup from Advance Auto Parts. [Read more]

Store: Advance Auto Parts

Brand: Carquest Or Airtex

CARQUEST or Airtex Fuel Pump Module Assembly - E3560M
 

CARQUEST or Airtex Fuel Pump Module Assembly - E3560M

$290.99

Please note: Advance Auto Parts is proud to carry comparable exact-fit parts from multiple vendors, as such, the item you receive may be one of two quality brands. Both brands meet the same fitment requirements and are equal in their performance and specifications. CARQUEST or Airtex fuel pump modules offer OEM or better performance from an Original Equipment Supplier. The latest advancements in fuel delivery technology are built-in to every CARQUEST or Airtex Fuel Pump to deliver greater reliability. Product Features: Every single pump is 100% tested throughout the entire manufacturing process for worry free, out-of-the-box performance Triple barb hose fitting provides superior, long-lasting seal Superior return porting for optimum fuel flow Enhanced pump to flange harness design provides worry-free electrical performance Ceramic sender card and float arm that utilizes vehicle-specific geometry to ensure accurate fuel gauge readings for each and every application Gradient density, ... [Read more]

Store: Advance Auto Parts

Brand: Carquest Or Airtex

Bosch Electrical Fuel Pump Kit - 69220
 

Bosch Electrical Fuel Pump Kit - 69220

$84.49

All Bosch fuel pumps conform to an "OE or greater" standard for fit, form and function. This means you get a long-lasting, high-performing pump that fits right the first time. Product Features: OE Fit OE Form OE Function. Most Fuel Pumps products are available for in-store pickup from Advance Auto Parts. [Read more]

Store: Advance Auto Parts

Brand: Bosch

CARQUEST or Airtex Electric Fuel Pump - E8235
 

CARQUEST or Airtex Electric Fuel Pump - E8235

$85.99

Please note: Advance Auto Parts is proud to carry comparable exact-fit parts from multiple vendors, as such, the item you receive may be one of two quality brands. Both brands meet the same fitment requirements and are equal in their performance and specifications. CARQUEST or Airtex enhanced electric in-tank fuel pumps are 100% quality tested and are designed to deliver quiet operation, industry-leading performance and durability. All CARQUEST or Airtex pumps meet or exceed OE specifications in fit, form and function. Product Features: Every single pump is 100% tested throughout the entire manufacturing process for worry free, out-of-the-box performance Advanced polymers, brushes and commutators to ensure long life and durability in multiple fuel blends. High-performance pump section assembly provides superior performance Leading-edge inlet design to increase performance and efficiency, leading to longer life High grade outer shell for life-long corrosion resistance Optimized, prec... [Read more]

Store: Advance Auto Parts

Brand: Carquest Or Airtex

CARQUEST or Airtex Fuel Pump Module Assembly - E8366M
 

CARQUEST or Airtex Fuel Pump Module Assembly - E8366M

$329.99

Please note: Advance Auto Parts is proud to carry comparable exact-fit parts from multiple vendors, as such, the item you receive may be one of two quality brands. Both brands meet the same fitment requirements and are equal in their performance and specifications. CARQUEST or Airtex fuel pump modules offer OEM or better performance from an Original Equipment Supplier. The latest advancements in fuel delivery technology are built-in to every CARQUEST or Airtex Fuel Pump to deliver greater reliability. Product Features: Every single pump is 100% tested throughout the entire manufacturing process for worry free, out-of-the-box performance Triple barb hose fitting provides superior, long-lasting seal Superior return porting for optimum fuel flow Enhanced pump to flange harness design provides worry-free electrical performance Ceramic sender card and float arm that utilizes vehicle-specific geometry to ensure accurate fuel gauge readings for each and every application Gradient density, ... [Read more]

Store: Advance Auto Parts

Brand: Carquest Or Airtex

CARQUEST or Airtex Fuel Pump Module Assembly - E8772M
 

CARQUEST or Airtex Fuel Pump Module Assembly - E8772M

$1,395.99

Please note: Advance Auto Parts is proud to carry comparable exact-fit parts from multiple vendors, as such, the item you receive may be one of two quality brands. Both brands meet the same fitment requirements and are equal in their performance and specifications. CARQUEST or Airtex fuel pump modules offer OEM or better performance from an Original Equipment Supplier. The latest advancements in fuel delivery technology are built-in to every CARQUEST or Airtex Fuel Pump to deliver greater reliability. Product Features: Every single pump is 100% tested throughout the entire manufacturing process for worry free, out-of-the-box performance Triple barb hose fitting provides superior, long-lasting seal Superior return porting for optimum fuel flow Enhanced pump to flange harness design provides worry-free electrical performance Ceramic sender card and float arm that utilizes vehicle-specific geometry to ensure accurate fuel gauge readings for each and every application Gradient density, ... [Read more]

Store: Advance Auto Parts

Brand: Carquest Or Airtex

CARQUEST or Airtex Fuel Pump Sender Assembly - E2365S
 

CARQUEST or Airtex Fuel Pump Sender Assembly - E2365S

$367.99

Please note: Advance Auto Parts is proud to carry comparable exact-fit parts from multiple vendors, as such, the item you receive may be one of two quality brands. Both brands meet the same fitment requirements and are equal in their performance and specifications. CARQUEST or Airtex fuel pump sender assemblies feature exact fit, with design improvements, such as upgraded polymers, brushes, and commutators to ensure lasting durability in multiple fuel blends. Also features advanced rust-inhibiting finish for longer life. Product Features: Every single pump is 100% tested throughout the entire manufacturing process for worry free, out-of-the-box performance Advanced rust-inhibiting finish for long-lasting durability High-performance pump section assembly provides superior performance Leading-edge inlet design to reduce friction and increase performance Gradient density strainer designed for better contamination resistance. Most Fuel Pumps products are available for in-store pickup fr... [Read more]

Store: Advance Auto Parts

Brand: Carquest Or Airtex

CARQUEST or Airtex Mechanical Fuel Pump - 1081
 

CARQUEST or Airtex Mechanical Fuel Pump - 1081

$39.99

Please note: Advance Auto Parts is proud to carry comparable exact-fit parts from multiple vendors, as such, the item you receive may be one of two quality brands. Both brands meet the same fitment requirements and are equal in their performance and specifications. CARQUEST or Airtex mechanical fuel pumps are the only mechanical fuel pumps manufactured in the USA. These pumps are precision-cast units designed to meet or exceed OEM specifications and are built with enhanced, long-lasting components. Product Features: Special heat treated rocker arms and case-hardened pins to ensure long-lasting performance Upgraded seals and pump diaphragms for compatibility with modern multi-fuel blends Every single pump is 100% tested throughout the entire manufacturing process for worry free, out-of-the-box performance. Most Fuel Pumps products are available for in-store pickup from Advance Auto Parts. [Read more]

Store: Advance Auto Parts

Brand: Carquest Or Airtex

CARQUEST or Airtex Mechanical Fuel Pump - 1337
 

CARQUEST or Airtex Mechanical Fuel Pump - 1337

$45.99

Please note: Advance Auto Parts is proud to carry comparable exact-fit parts from multiple vendors, as such, the item you receive may be one of two quality brands. Both brands meet the same fitment requirements and are equal in their performance and specifications. CARQUEST or Airtex mechanical fuel pumps are the only mechanical fuel pumps manufactured in the USA. These pumps are precision-cast units designed to meet or exceed OEM specifications and are built with enhanced, long-lasting components. Product Features: Special heat treated rocker arms and case-hardened pins to ensure long-lasting performance Upgraded seals and pump diaphragms for compatibility with modern multi-fuel blends Every single pump is 100% tested throughout the entire manufacturing process for worry free, out-of-the-box performance. Most Fuel Pumps products are available for in-store pickup from Advance Auto Parts. [Read more]

Store: Advance Auto Parts

Brand: Carquest Or Airtex

CARQUEST or Airtex Fuel Pump Sender Assembly - E7091S
 

CARQUEST or Airtex Fuel Pump Sender Assembly - E7091S

$107.99

Please note: Advance Auto Parts is proud to carry comparable exact-fit parts from multiple vendors, as such, the item you receive may be one of two quality brands. Both brands meet the same fitment requirements and are equal in their performance and specifications. CARQUEST or Airtex fuel pump sender assemblies feature exact fit, with design improvements, such as upgraded polymers, brushes, and commutators to ensure lasting durability in multiple fuel blends. Also features advanced rust-inhibiting finish for longer life. Product Features: Every single pump is 100% tested throughout the entire manufacturing process for worry free, out-of-the-box performance Advanced rust-inhibiting finish for long-lasting durability High-performance pump section assembly provides superior performance Leading-edge inlet design to reduce friction and increase performance Gradient density strainer designed for better contamination resistance. Most Fuel Pumps products are available for in-store pickup fr... [Read more]

Store: Advance Auto Parts

Brand: Carquest Or Airtex

CARQUEST or Airtex Fuel Pump Sender Assembly - E2093S
 

CARQUEST or Airtex Fuel Pump Sender Assembly - E2093S

$96.99

Please note: Advance Auto Parts is proud to carry comparable exact-fit parts from multiple vendors, as such, the item you receive may be one of two quality brands. Both brands meet the same fitment requirements and are equal in their performance and specifications. CARQUEST or Airtex fuel pump sender assemblies feature exact fit, with design improvements, such as upgraded polymers, brushes, and commutators to ensure lasting durability in multiple fuel blends. Also features advanced rust-inhibiting finish for longer life. Product Features: Every single pump is 100% tested throughout the entire manufacturing process for worry free, out-of-the-box performance Advanced rust-inhibiting finish for long-lasting durability High-performance pump section assembly provides superior performance Leading-edge inlet design to reduce friction and increase performance Gradient density strainer designed for better contamination resistance. Most Fuel Pumps products are available for in-store pickup fr... [Read more]

Store: Advance Auto Parts

Brand: Carquest Or Airtex

CARQUEST or Airtex Mechanical Fuel Pump - 1309
 

CARQUEST or Airtex Mechanical Fuel Pump - 1309

$36.99

Please note: Advance Auto Parts is proud to carry comparable exact-fit parts from multiple vendors, as such, the item you receive may be one of two quality brands. Both brands meet the same fitment requirements and are equal in their performance and specifications. Quality CARQUEST or Airtex mechanical fuel pumps offer reliability and performance to meet or exceed OE (original equipment). Product Features: Exact-fit replacement for improved installation Precision die-cast housings offer reliable performance Application-specific coverage for the right fit 100% factory tested to ensure quality and performance. Most Fuel Pumps products are available for in-store pickup from Advance Auto Parts. [Read more]

Store: Advance Auto Parts

Brand: Carquest Or Airtex

Bosch Electrical Fuel Pump - 67218
 

Bosch Electrical Fuel Pump - 67218

$271.99

All Bosch fuel pumps conform to an "OE or greater" standard for fit, form and function. This means you get a long-lasting, high-performing pump that fits right the first time. Most Fuel Pumps products are available for in-store pickup from Advance Auto Parts. [Read more]

Store: Advance Auto Parts

Brand: Bosch

CARQUEST or Airtex Fuel Pump Module Assembly - E3369M
 

CARQUEST or Airtex Fuel Pump Module Assembly - E3369M

$394.99

Please note: Advance Auto Parts is proud to carry comparable exact-fit parts from multiple vendors, as such, the item you receive may be one of two quality brands. Both brands meet the same fitment requirements and are equal in their performance and specifications. CARQUEST or Airtex fuel pump modules offer OEM or better performance from an Original Equipment Supplier. The latest advancements in fuel delivery technology are built-in to every CARQUEST or Airtex Fuel Pump to deliver greater reliability. Product Features: Every single pump is 100% tested throughout the entire manufacturing process for worry free, out-of-the-box performance Triple barb hose fitting provides superior, long-lasting seal Superior return porting for optimum fuel flow Enhanced pump to flange harness design provides worry-free electrical performance Ceramic sender card and float arm that utilizes vehicle-specific geometry to ensure accurate fuel gauge readings for each and every application Gradient density, ... [Read more]

Store: Advance Auto Parts

Brand: Carquest Or Airtex

Cardone Remanufactured Power Steering Pump w/Reservoir - 20-6190
 

Cardone Remanufactured Power Steering Pump w/Reservoir - 20-6190

$54.31

A1 CARDONE power steering pumps are remanufactured to meet or exceed O.E. performance. Original designs are scrutinized for potential improvement, and where applicable, design upgrades are implemented to produce a more durable part than the original. All critical components are tested to ensure proper function. Every unit undergoes a hydraulic efficiency test to ensure reliable, long-lasting performance. Product Features: All units are built with 100% new O-rings and premium-grade Viton seals to prevent leaks. Viton does not break down at high temperatures like conventional seal material All critical components are triple-tested to ensure product reliability Every pump is computer tested to measure pressure, bypass, fluid flow, valve operation, steering effort and noise for guaranteed performance Units are supplied with 100% tested and calibrated pressure relief valves for guaranteed performance Shafts are surfaced to precise specifications to eliminate premature seal wear and ext... [Read more]

Store: Advance Auto Parts

Brand: Cardone

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Este experimento es una ilustración clásica (véase la Figura 1-4) del principio de  conservación de la energía. En 1843, el Dr. Joule de Manchester, Inglaterra, realizó su experimento clásico que demostraba a mundo el equivalente mecánico del calor. Se descubrió que el trabajo realizado por el peso descendente (W en Figura 1-4) no se perdía, sino que aparecía en forma de calor en el agua (la agitación de las paletas al aumentar la temperatura del agua por una cantidad que podía ser medida por un ). De acuerdo a la experiencia de Joule, cuando 772 libras-pie de energía de trabajo se habían gastado en 1 libra de agua, la temperatura del agua había aumentado 1 ºF.

Figura 1-4. El experimento de Joule reveló el equivalente mecánico del calor

Esto se conoce como equivalente de Joule, es decir, 1 unidad de calor es igual a 772 libras-pie (ft-lb) de trabajo.

Los experimentos realizados por el profesor Rowland (1880) y otros ofrecen mayores valores. Un valor de 778 libras-pie es generalmente aceptado, pero 777,5 ft-lb es probablemente más correcto, el valor de 777,52 libras-pie se utiliza por Marks y Davis en sus tablas de vapor. El valor de 778 ft-lb es suficientemente exacto para la mayoría de los cálculos.

Calor

El calor es una forma de energía que es conocida por sus efectos. El efecto del calor es producido por la vibración acelerada de las moléculas. Teóricamente, toda vibración molecular se detiene a -273 ◦ C (conocido como el cero absoluto), y no hay calor formado. Los dos tipos de calor son el calor sensible y el calor latente.

Calor sensible

El efecto de esta forma de calor se indica mediante el sentido del tacto o sentimiento (véase la Figura 1-5).

El calor sensible se mide mediante un termómetro. Un termómetro es un instrumento utilizado para medir la temperatura de los gases, sólidos, y líquidos. Los tres tipos más comunes de los termómetros son líquido en vidrio, eléctrico, y de deformación.

El de líquido en tubo de vidrio generalmente emplea mercurio como líquido, a menos que la temperatura deba descender por debajo del punto de congelación del mercurio, en cuyo caso se utiliza el alcohol. El termómetro de líquido en tubo de vidrio es relativamente barato, fácil de leer, fiable y no necesita mantenimiento. El termómetro consiste en un tubo de vidrio con una pequeña perforación uniforme que tiene un bulbo en la parte inferior y un extremo sellado en la parte superior. El bulbo y la parte del tubo se llena de líquido. Cuando la temperatura aumenta, el líquido en el bulbo y en el tubo se expande y el líquido se eleva en el tubo. Cuando el líquido en el termómetro alcanza la misma temperatura que la temperatura exterior del termómetro, el líquido deja de elevarse.
En 1714, Gabriel Daniel Fahrenheit construyó un termómetro de mercurio del tipo ahora comúnmente en uso.

Figura 1-5. El es un ejemplo del calor sensible

Los termómetros eléctricos son del tipo más sofisticado. Un termopar es un buen ejemplo. Este termómetro mide la temperatura midiendo un pequeño voltaje producido en la unión de dos metales diferentes. Los termómetros eléctricos se fabrican para poder medir temperaturas de hasta 1500 ºC.

Los termómetros de deformación utilizan el principio de que los líquidos aumentan de volumen y de los sólidos aumentan de longitud a medida que aumentan las temperaturas. El termómetro de tubo Bourdon es un termómetro de deformación.

Las temperaturas extremadamente altas son medidas por un pirómetro. Un tipo de pirómetro coincide el color (tal como la del interior de un horno) con las temperaturas conocidas de alambres al rojo vivo.

La Figura 1-6 muestra las escalas de termómetro Fahrenheit, Celsius, y Reaumur . La figura 1-7 ilustra el principio básico de un termopar  pirómetro.

Figura 1-6 Tres tipos de escalas termómetro.

Figura 1-7 Principio básico de un . Un termopar se utiliza para medir  altas temperaturas. En principio, cuando el calor es aplicado a la unión de dos metales diferentes, una corriente de electricidad comienza a fluir en proporción a la cantidad de calor aplicado. Esta corriente es llevada a un medidor y traducida en términos de calor.

Calor latente

Esta forma de calor es la cantidad de calor que se mantiene oculta o escondida dentro de un cuerpo mientras se produce algún cambio en el cuerpo aparte de un aumento en la temperatura.

Cuando el agua a presión atmosférica se calienta a 212 ºF, no se produce un aumento mayor de la temperatura, a pesar de que el suministro de calor continúa. En lugar de un aumento de la temperatura, ocurre la vaporización, y una cantidad considerable de calor debe añadirse al líquido para transformarlo en vapor. El calor total consiste en calores latentes interno y externo. Así, con el agua a 212 ºF y a presión atmosférica, una considerable cantidad de calor se requiere para hacer que el agua comience la ebullición (calor latente interno). El calor adicional que es necesario para hervir el agua se denomina calor latente externo. La Figura 1-8 muestra un ejemplo conocido de calor latente tanto interno como externo.

(A) Calor latente interno - Esperando que el recipiente hierva (B) Calor latente externo - Cuando el recipiente hierve

Figura 1-8 Ámbito doméstico para ilustrar calor el latente interno (izquierda) y externo (derecha).

Unidad de Calor

La unidad de calor es la cantidad de calor necesaria para elevar la temperatura de 1 libra de agua 1 ºF a la densidad máxima del agua. La unidad térmica británica (abreviado Btu) es el estándar para la medida de calor. Una unidad de calor (Btu) es igual a 252 calorías, que es la cantidad de calor necesaria para elevar la temperatura de 1 libra de agua de 62 ºF a 63 ºF.

Suponiendo que no hay pérdida de calor, 180 Btu se requieren para elevar la temperatura de 1 libra de agua de 32 ºF a 212 ºF. Si la transferencia de calor se produce a una velocidad uniforme y si seis minutos se requieren para aumentar la temperatura del agua de 32 ºF a 212 ºF, 1 Btu es transferido al agua en (6 x 60) ÷ 180, ó sea 2 segundos.

Calor específico

Es la razón entre el número de Btu necesarios para elevar la temperatura de una sustancia 1 ºF al número de Btu necesarios para elevar la temperatura de una cantidad igual de agua en 1 ºF. Algunas sustancias se pueden calentar más rápidamente que otras. El metal, por ejemplo, se puede calentar más rápidamente que el vidrio, la madera, o el aire. Si una sustancia dada requiere un décimo de la cantidad de calor para llevarla a una temperatura dada que se requiera para un peso igual de agua, el número de Btu requeridos es de 1/10  (0,1), y su calor específico es de 1/10 (0,1).

Ejemplo

La cantidad de calor necesaria para elevar la temperatura de 1 libra de agua 1 ºF es igual a la cantidad de calor necesaria para elevar la temperatura de 8,4 libras de hierro fundido en 1 ºF. Dado que el calor específico de agua es 1,0, el calor específico del hierro fundido es 0,1189 (1,0 ÷ 8,4).

Por lo tanto, el calor específico es la relación entre las dos cantidades de calor. La Tabla 1-1 muestra el calor específico de algunas sustancias comunes.

Tabla 1-1 Calor específico de sustancias comunes

Sólidos   Líquidos  
Cobre 0,0951 Agua 1,0000
Hierro forjado 0,1138 Ácido sulfúrico 0,3350
Vidrio 0,1937 Mercurio 0,0333
Fundición de hierro 0,1298 Alcohol 0,7000
Plomo 0,0314 Benceno 0,9500
Estaño 0,0562 Ether 0,5034
Acero duro  0,1175    
Acero blando 0,1165    
Latón 0,0939    
Hielo 0,5040    

Gases

Tipo A presión constante  A volumen constante
Aire 0.23751 0.16847
Oxígeno 0.21751 0.15507
Hidrógeno 3.40900 2.41226
Nitrógeno 0.24380  0.17273
Amoníaco 0.50800 0.29900
Alcohol 0.45340 0.39900

Transferencia de Calor

El calor puede ser transferido de un cuerpo a otro que esté a una temperatura menor  (véase la figura 1-9) por lo siguiente:

  • Radiación
  • Conducción
  • Convección

Cuando el calor se transmite por radiación, el material caliente (tal como la quema de combustible) produce ondas en el aire. En un horno tipo caldera, el calor se emite por radiación (rayos de calor radiante en líneas rectas en todas las direcciones). El calor se transfiere a la plancha de la corona y los lados del horno por medio de radiación.

Contrariamente a la creencia popular de que el calor se transfiere a través de sólidos por la radiación, el calor se transfiere a través de sólidos (tal como una plancha de caldera) por conducción (véase la figura 1-10). La temperatura de la placa del horno es sólo ligeramente superior a la temperatura del  agua que está en contacto con la placa. Esto es debido a la conductividad extremadamente alta de la placa.

La conducción de calor es el proceso de transferencia de calor de molécula a molécula. Si un extremo de una barra de metal se mantiene en una llama y y el otro extremo en la mano, el extremo en la mano se calentará. La razón de esto es que las moléculas en la barra cerca de la llama se calientan y se mueven rápidamente, golpeando las moléculas próximas a las mismas. Esta acción se repite a lo largo de la barra hasta que el extremo opuesto sea alcanzado. El calor es transferido desde un extremo de la barra al otro por conducción. La conducción depende de las temperaturas desiguales en las diversas partes de un cuerpo dado.

La convección del calor es el proceso de transmisión de calor por medio del movimiento de la materia calentada desde una ubicación a otra. La convección se lleva a cabo en gases y líquidos.

En un lugar calentado por un radiador, el aire al lado del radiador se calienta y se expande. El aire caliente es menos denso que el aire circundante frío. Éste es forzado hacia arriba desde el radiador por el aire más denso y más frío. La mayoría de los sistemas de calefacción del hogar funcionan según el principio de la transmisión de calor por convección.

Figura 1-9 Transferencia de calor por radiación, conducción y convección. Cabe señalar que el aire, no el agua, es el agente de enfriamiento, el agua es sólo el medio para transferir el calor al punto en el que se extrae y es disipado por el aire.

Figura 1.10. Diferencias en la conductividad térmica de diferentes metales

Casi todas las sustancias se expanden con un aumento de la temperatura, y se contraen o se encogen con una disminución de la temperatura. Hay una excepción a esta norma para todos los cambios de temperatura, la excepción es el agua. Es una característica notable de agua que a su densidad máxima (39,1 ºF) el agua se expande cuando se añade calor y que también se expande ligeramente al disminuir la temperatura desde ese punto.

El aumento de calor hace que una sustancia se expanda, debido a un aumento en la velocidad de acción molecular. Puesto que las moléculas se separan más en distancia por sus colisiones violentas más frecuentes, el cuerpo se expande.

La dilatación lineal es la dilatación en una dirección longitudinal de cuerpos sólidos, mientras que la expansión volumétrica es la expansión en el volumen de de una sustancia.

El coeficiente de dilatación lineal de una sustancia sólida es la relación de incremento en la longitud de cuerpo a su longitud original, producida por un aumento de temperatura de 1 ºF.

La expansión y contracción causada por un cambio en la temperatura tiene algunas ventajas, pero también plantea algunos inconvenientes. Por ejemplo, en el lado positivo, los remaches se calientan al rojo vivo para aplicarlos a las vigas de un puente, acero estructural y placas de calderas grandes. A medida que los remaches se enfrían, se contraen, y proporcionan un método sólido de sujeción. Las llantas de hierro se calientan primero y luego se colocan sobre la rueda de un carruaje. A medida que el hierro se enfría, la llanta se contrae y se une a la rueda para que no se salga.

La práctica común es dejar un pequeño espacio entre los extremos de las secciones de acero que se colocan en el extremo final. Esto es para permitir la dilatación y contracción longitudinal. La Tabla 1-2 muestra valores que se pueden utilizar en el cálculo de la expansión lineal.

Algunos de los inconvenientes de la expansión y contracción causada por el cambio de las temperaturas son la formación de altas tensiones, distorsión, desalineación, y problemas en los rodamientos.

Tabla 1-2. Dilatación lineal de los metales comunes (entre 32 ºF y 212 ºF)

Metal Dilatación lineal por unidad de longitud  por grado F
Aluminio 0.00001234
Antimonio 0.00000627
Bismuto 0.00000975
Latón 0.00000957
Bronce 0.00000986
Cobre 0.00000887
Oro 0.00000786
Hierro, fundición 0.00000556
Hierro, forjado 0.00000648
Plomo 0.00001571
Níquel 0.00000695
Acero 0.00000636
Estaño 0.00001163
Zinc, fundición 0.00001407
Zinc, plegado 0.00001407

Expansión volumétrica = 3 veces de expansión lineal.

Temas relacionados : Neumática e Hidráulica

 

 


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