Heat Exchanger

Heat exchangers are devices built for efficient heat transfer from one fluid to another and are widely used in engineering processes. Some examples are intercoolers, preheaters, boilers and condensers in power plants. By applying the first law of thermodynamics to a heat exchanger working at steady-state condition, we obtain:

mi hi=0

mi= mass flow of the i-th fluid
hi= change of specific enthalpy of the i-th fluid
There are several types of heat exchanger: The recuperative type of heat exchanger which is the most common in practice may be designed according to one of the following types:
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