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Heat Exchanger

Heat Exchanger






A heat exchanger is a device built for efficient heat transfer from one medium to another. The media may be separated by a solid wall, so that they never mix, or they may be in direct contact.They are widely used in space heating, refrigeration, air conditioning, power plants, chemical plants, petrochemical plants, petroleum refineries, and natural gas processing. One common example of a heat exchanger is the radiator in a car, in which the heat source, being a hot engine-cooling fluid, water, transfers heat to air flowing through the radiator (i.e. the heat transfer medium).

In almost any chemical, electronic, or mechanical system, heat must be transferred from one place to another or from one fluid to another. Heat exchangers are used to transfer heat from one fluid to another. A basic understanding of the mechanical components of a heat exchanger is important to understanding how they function and operate.

Heat exchanger is a component that allows the transfer of heat from one fluid,liquid or gas to another fluid. Reasons for heat transfer include the following:

1. To heat a cooler fluid by means of a hotter fluid
2. To reduce the temperature of a hot fluid by means of a cooler fluid
3. To boil a liquid by means of a hotter fluid
4. To condense a gaseous fluid by means of a cooler fluid
5. To boil a liquid while condensing a hotter gaseous fluid

Regardless of the function the heat exchanger fulfills, in order to transfer heat the fluids involved must be at different temperature and they must come into thermal contact. Heat can flow only from the hotter to the cooler fluid. In a heat exchanger there is no direct contact between the two fluids. The heat is transferred from the hot fluid to the metal isolating the two fluids and then to the cooler fluid.

Related References:
  • Heat Exchanger
  • U bend Stainless Steel Tube for Heat Exchanger
  • Heat Exchanger Tube
  • Specification/Standards for Heat Exchanger Tubes
  • Finned Tube and Pipe Heat Exchangers
  • Shell Tube and Pipe Heat Exchangers
  • Select Materials for Heat Exchanger Tubes with Substantial Pressure difference
  • The difference between Stainless Steel Tubing and Copper Tubing in Shell and Tube Heat Exchanger
  • Difference in Counter and Parallel Flow Heat Exchanger
  • Aluminum Corrosion Resistance for Cold Plates and Plate-Fin Heat Exchangers
  • Flow arrangement
  • Heat exchangers - Tubes and Pipes Standards
  • Selecting a Heat Exchanger Cooling Liquid
  • Selecting a Heat Exchanger Cooling Air
  • Selecting A Cold Plate Technology
  • Selecting a Cooling System: Ambient Cooling System | Recirculating Chiller | Liquid-to-Liquid Cooling System | Recirculating Chiller or Liquid-to-Liquid Cooling System
  • Selecting A Cold Plate Technology
  • Selecting A Pump
  • Selecting a Recirculating Chiller
  • Selecting A Modular Cooling System
  • Selecting an Liquid-to-Liquid Cooling System
  • How To Selecting a Heat Exchanger
  • How to Boost the Efficiency of Heat Exchanger
  • Comparison of Heat Exchanger Types
  • Parallel and Counter Flow Design
  • Direct contact heat exchanger


  • Types of heat exchangers
    Shell and tube heat exchanger
    Plate Heat Exchanger - Efficiency and Flexibility
    U Tube heat exchanger
    Regenerative heat exchanger
    Adiabatic wheel heat exchanger
    Plate fin heat exchanger
    Fluid heat exchangers
    Phase-change heat exchanger
    Parallel Flow Heat Exchanger
    Counter Flow Heat Exchanger
    Cross Flow Heat Exchanger
    Spiral heat exchangers
    Radiator Heat Exchanger
    Shell and Coil Heat Exchangers
    Brazed Heat Exchangers - Advantages | Applications | Specifications
    Titanium Heat Exchanger
    Plate and Shell Heat Exchanger - Applications | Specification
    Block Welded Heat Exchanger - Applications | Specification


  • Construction
  • Self cleaning
  • Applications
  • Selection
  • Pre Heater
  • Radiator
  • Air Conditioner Evaporator and Condenser
  • Large Steam System Condensers
  • ASTM A498 Seamless and Welded Carbon Steel Heat Exchanger Tube



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