Essay On Heat Exchanger
1. INTRODUCTION
For the exchange of the heat unit which is used is known as the heat exchanger. The heat exchanger is used for the transformation of the energy in the form of heat from one fluid to another fluid. Heat exchanger works on the well- known principle of the chemical science and it is Calorimetry Principle. Whose function is to transform the heat from one fluid or solid to another one till that time when the temperature of both the parts become equal. In the heat exchanger the working fluid is separated by the wall which controls the flow of both the fluids and help them to be separated by each other. In present time the heat exchangers are used in the every industry of science and technology like in the chemical plants , boilers, refrigeration system, air conditioning system, domestic A.C system, medical Science,
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Regenerative type: The heat exchanger in which hot and cold fluids occupy the same space containing a matrix of material that works alternatively as a sink or source for heat flow is known as regenerative type of heat exchanger.
Evaporative type: The exchanger such as cooling tower in which a liquid is cooled evaporative in the Same space as coolant is known as evaporative type of heat exchanger
Among all the three kinds of heat exchanger the most important heat exchanger is recuperative type HEX. According to the flow of the fluid these are of the following types :
• Parallel-flow
• Counter-flow
• Cross-flow
Parallel–flow Heat exchanger: The exchanger in which both the fluids flow in the same direction.
Counter-flow : The exchanger in which the fluids flow in the opposite direction.
Cross-flow: The exchanger in which the fluids are perpendicular to each other is known as the cross flow heat
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