Abstract
In recent years the requirement for reduction of energy consumption has been increasing to solve the problems of the global warming and the shortage of petroleum resources. The latent heat recovery type heat exchanger is one of the effective methods in order to improve thermal efficiency by recovering latent heat. This paper described that the heat transfer and pressure loss characteristics of the latent heat recovery type heat exchanger having wing fin (fin pitch : 4mm, fin length : 65mm) were clarified by measuring the exchange heat quantity, the pressure loss of heat exchanger, and the heat transfer coefficient between outer fin surface and gas, and that the effects of behavior of condensate in the fins on heat transfer and pressure loss characteristics were clarified. Furthermore the equations for predicting the heat transfer coefficient and pressure loss which are necessary on design of the heat exchanger were proposed.
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