Performance of Crossflow Heat Exchanger

概要

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In search of ways to obtain uniform outlet temperature distribution on crossflow heat exchangers, theoretical analyses by means of Laplace transformation are further developed, and experimental investigations are carried out on both the plate fin type and the fin tube type crossflow heat exchangers. The analyses and experiments are conducted under the conditions of (1) various distribution patterns of fluid flow rate and (2) various distribution patterns of heat transfer area, and the results thereof are compared. In consequence, by setting the fluid flow rate distribution, as confirmed by the analyses, uniform outlet temperature in an appreciable degree can be obtained over a wide range of NTU, and better temperature efficiency is achieved. By varying the heat transfer area distribution, similar results are obtained, but this method is impractical compared with the former.
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