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The Heat Exchanger is a device built for effective transferring of heat power from one particular fluid to yet another across a solid surface. In a heat exchanger design both the convection and conduction principle of heat transfer is utilized. There is no radiative transfer of heat energy in between the exchanger and the atmosphere unless the exchanger is uninsulated or its external surfaces are quite hot. The heat exchanger has wide use in engineering processes. The most frequent instance of a heat exchanger is the radiator in a car. Right here the hot fluid in the radiator is cooled by the air flow more than the radiator surface.

Some other examples of heat exchanger are preheaters, intercoolers, boilers, condensers, and so forth. that are employed in the power plants. They are also utilized in refrigeration, air conditioning, chemical processing and power production.

Diverse types of Heat Exchangers:

There are various varieties of heat exchangers. They can be classified according to its construction into the following types 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 through which one 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 huge 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 type, regenerative kind and evaporative sort.

- Recuperative sort: In recuperative kind 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 permitted to occupy the identical space containing a matrix of material that works alternatively as a sink or source for heat flow.

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

- The recuperative type of heat exchanger again can be made according to one of the following types i.e. Parallel-flow, Counter-flow and Cross-flow.

- Parallel-flow heat exchanger: In this type of heat exchanger each the fluids exchanges heat by flowing in the same course via person pipes.

- Counter-flow heat exchanger: In this type of heat exchanger the fluids exchanges heat by flowing in the opposite path through individual pipes. loudoun pest control