Heatexchanger are equipment that are created specifically to be able to
efficiently transfer heat from one fluid to another through a solid surface.
This heat transfer takes one of two forms namely dissipation of heat or
compression. These two fluids should never come into contact with each other.
They are found in everyday applications that is included in furnaces, air
conditioning systems, domestic hot water systems, pool heaters, radiant floor
heating, ground water systems, refrigerators and boilers.
The cross flow models are designed in a way
that the fluid paths are running vertical with respect to each other. The
counter-current models are designed in a way that the fluid paths are flowing
in contrary directions where one exists where the other is entering. They are
more effective in comparison to the others. Heat exchangers are not classified
according to their fluid direction only. They can also be classified according
to their arrangement. Some of them are made of several tubes while others have
hot plates that have room for the flow of liquid between them.
A Shell and tube exchanger is made with
several tubes which are divided into two sets where one contains the liquid for
cooling or heating and the other contains the liquid that triggers the
exchange. This type of exchanger should be well designed particularly the
diameter of the tube and the thickness of the wall in order to allow optimum
heat exchange. A plate exchanger has thin plates that are joined together with
small spaces between them. These exchangers have large surface areas.
For more information: Heat Exchanger
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