Abstract

An analysis of simultaneous exchange of heat and water vapor in a crossflow-type total heat exchanger which is made of a Japanese paper impregnated with some kind of hygroscopic agent is carried out by employing a permeability coefficient based on an analogy between heat and mass transfer. It is shown that the predictions are matched well to experiments for the temperature and humidity efficiency. In respect to heat and mass transfer processes through the total heat exchanger, a particularly interesting fact is also revealed that the rate of heat transfer is dominated by air rather than the paper, while the rate of mass transfer of water vapor is dominated by the paper rather than air.

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