FernEidson583

The Heat Exchanger is a device constructed for effective transferring of heat power from one particular fluid to one more across a solid surface. In a heat exchanger style each the convection and conduction principle of heat transfer is employed. There is no radiative transfer of heat power among the exchanger and the atmosphere 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 a vehicle. 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 utilized in the power plants. They are also utilized in refrigeration, air conditioning, chemical processing and power production.

Various kinds of Heat Exchangers:

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

- Shell and tube heat exchanger: This is a common heat exchanger. The shell and tube heat exchanger is consisting of a series of finned tubes via 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 big surface area. Right here the flow is directed by means of the baffles.

The heat exchangers classified according to its utilizes are recuperative type, regenerative sort and evaporative sort.

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

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

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

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

- Parallel-flow heat exchanger: In this type of heat exchanger both the fluids exchanges heat by flowing in the exact same direction through person pipes.

- Counter-flow heat exchanger: In this kind of heat exchanger the fluids exchanges heat by flowing in the opposite direction by way of person pipes. division