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主页 旧刊 有关人员 未来大会 American Society of Thermal and Fluids Engineering

ISSN 在线: 2379-1748

ISBN 打印: 978-1-56700-517-2 (Flash drive)

5-6th Thermal and Fluids Engineering Conference (TFEC)
May, 26–28, 2021 , Virtual

A ONE-DIMENSIONAL MODEL FOR LOOP HEAT PIPES CONSIDERING THE LIQUID-VAPOR INTERFACE MOVEMENT

Get access pages 969-978
DOI: 10.1615/TFEC2021.hpp.032191

摘要

This paper presents a one-dimensional numerical model for the design and analysis of loop heat pipes. In contrast to previous one-dimensional models from the literature, this model takes the movement of the liquid-vapor interface in the wick with different design conditions into account. In addition, it incorporates consistent energy and mass balances between the evaporator and its integrated compensation chamber. The presented model allows us to predict, at a low computational cost, the required charging mass of coolant, as well as the corresponding system performance, and the operating limits. From the model results, it is observed that there exists an optimal charging mass of coolant, as a lower charging mass beneficially reduces the operating temperature for a given input heat power, while a higher charging mass increases the heat transport capacity. Furthermore, the model shows that there also exists an optimal thermal conductivity of the wick, which is a trade-off between easing the loop heat pipe's start-up behavior and reducing its operating temperature.
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