A Look At The Different Varieties Of Heat Exchangers

Aug 8, 2012 by KnabjianStecher303

The Heat Exchanger is a device built for efficient transferring of heat energy from one fluid to another across a solid surface. In a heat exchanger style each the convection and conduction principle of heat transfer is used. There is no radiative transfer of heat power among the exchanger and the environment unless the exchanger is uninsulated or its external surfaces are really hot. The heat exchanger has wide use in engineering processes. The most common example of a heat exchanger is the radiator in an auto. Right here the hot fluid in the radiator is cooled by the air flow over the radiator surface.

Some other examples of heat exchanger are preheaters, intercoolers, boilers, condensers, etc. that are used in the power plants. They are also utilised in refrigeration, air conditioning, chemical processing and power production.

Various types of Heat Exchangers:

There are distinct types of heat exchangers. They can be classified according to its construction into the following sorts i.e. shell and tube heat exchanger and plate and frame heat exchanger.

- Shell and tube heat exchanger: This is a typical heat exchanger. The shell and tube heat exchanger is consisting of a series of finned tubes by means of which a single of the fluids runs and the other fluid which is to be heated or cooled runs more than the finned tubes.

- Plate and frame heat exchanger: In a plate and frame heat exchanger, the fluids are separated by plates with a significant surface area. Right here the flow is directed by means of the baffles.

The heat exchangers classified according to its makes use of are recuperative variety, regenerative variety and evaporative kind.

- Recuperative variety: In recuperative type heat exchanger the heat from the fluids on either side of a dividing wall is exchanged.

- Regenerative sort: In regenerative variety heat exchanger the hot and cold fluids are allowed to occupy the identical space containing a matrix of material that functions alternatively as a sink or source for heat flow.

- Evaporative kind: In evaporative kind heat exchanger the fluid is evaporatively cooled in the exact same space as coolant such as a cooling tower.

- The recuperative kind of heat exchanger again can be designed according to one of the following sorts i.e. Parallel-flow, Counter-flow and Cross-flow.

- Parallel-flow heat exchanger: In this variety of heat exchanger each the fluids exchanges heat by flowing in the exact same direction via individual pipes.

- Counter-flow heat exchanger: In this type of heat exchanger the fluids exchanges heat by flowing in the opposite direction by means of individual pipes.

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