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...Heat exchangers introduction the devices that are used to facilitate transfer between two or more fluids at different temperatures known as types and sizes of in steam power plants chemical processing units building heating air conditioning house hold refrigerators car radiators for space vehicles etc this chapter deals with classification overall coefficient lmtd ntu method effectiveness broadly classified based on following considerations process direct contact indirect a takes place immiscible like gas liquid coming into e g cooling towers jet condensers water vapour other vapors utilizing spray b type hot cold separated by an impervious surface there is no mixing these also automobile compactness ratio area one side exchanger volume measure having density anyone greater than about m compact turbine engines human lungs construction follows tubular available many flow arrangements they can withstand wide range operating pressures commonly design shell tube which consists round tubes ...