CONDENSATION HEAT TRANSFER IN VERTICAL TWO-PHASE CLOSED THERMOSYPHON

Tongze , Ma; Hong, Wei; Huanzhuo , Chen; Shufei, Zhang

Heat Pipe Technology: Volume 1. Fundamentals and Experimental Studies

ISSN Print: 0-8493-9921-1

CONDENSATION HEAT TRANSFER IN VERTICAL TWO-PHASE CLOSED THERMOSYPHON

Ma Tongze Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing, People's Republic of China

Wei Hong Institute of Engineering Thermophysics, Chinese Academy of Sciences Beijing, China

Chen Huanzhuo Institute of Engineering Thermophysics, Chinese Academy of Sciences Beijing, China

Zhang Shufei Institute of Engineering Thermophysics, Chinese Academy of Sciences Beijing, China

Abstract

This paper presents a theoretical analysis and experimental results of condensation heat transfer in the vertical two-phase closed thermosyphon. The effects of the relative importance of the two kinds of shear stresses and the effects of the pressure are considered in the theoretical prediction. The experiments are carried out at different filling ratios and pressures. The theoretical calculations agree with the experimental results in a certain range of temperature differences.

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