Abstract

ABSTRACT In this study, the uniformity factor of the temperature difference field was introduced into the direct contact heat exchanger by establishing a trace element layer model for the heat exchanger. Furthermore, the uniformities of the temperature and temperature difference field of the direct contact heat exchanger operated using a continuous heat source were analyzed. The heat exchange height was proposed,and its effects on the volumetric heat transfer coefficient and heat-exchanger efficiency were analyzed. The experimental results were consistent with the uniformity principle of the temperature difference field.

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