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Heat Pipe Science and Technology, An International Journal

Published 4 issues per year

ISSN Print: 2151-7975

ISSN Online: 2151-7991

HEAT TRANSFER LIMIT DUE TO PRESSURE DROP OF A TWO-PHASE LOOP THERMOSYPHON

Volume 1, Issue 3, 2010, pp. 237-250
DOI: 10.1615/HeatPipeScieTech.2011003082
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ABSTRACT

This work presents theoretical and experimental studies on the heat transfer limit due to pressure drop of two-phase loop thermosyphons. This limit is reached when the condensate return level reaches the end of the condenser. Any further increase in the heat transfer rate makes the condensate block part of the condenser, increasing the overall thermal resistance of the thermosyphon. A model based on the literature models and correlations for pressure drop in both single- and two-phase flow is developed here to predict the heat transfer limit due to pressure drop in two-phase loop thermosyphons. A stainless-steel-water prototype was built and tested to validate the model. The obtained data are well predicted by the proposed model.

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