储液器在被动式热交换下环路热管的热性能研究

发布时间：2018-01-04 08:20

本文关键词：储液器在被动式热交换下环路热管的热性能研究　出处：《航天器工程》2016年06期 　论文类型：期刊论文

【摘要】：环路热管是应用于航天器、航空器、舰船等设备的新型换热器件,热性能是评价环路热管的主要性能参数。通过试验和系统级数值模拟研究了当储液器处于自然对流的被动式热交换时,环路热管在不同冷源温度下的温度分布特性和换热性能,说明环路热管总热阻和冷凝器利用率受冷源温度的影响规律。环路热管存在可变热导和固定热导区:在可变热导区,环路热管总热阻随热负荷的增大迅速减小,而升高冷源温度有助于降低总热阻;进入固定热导区后,总热阻则趋于稳定。蒸发器换热系数随着热负荷的增大先增大后减小,但其变化幅度在冷源温度较高时明显减弱。
[Abstract]:The loop heat pipe is used in spacecraft, aircraft, ships and other devices of new heat transfer equipment, thermal performance evaluation is the main performance parameters of loop heat pipes. Through numerical experiments and system simulation on the passive thermal reservoir in natural convection exchange, loop heat pipe temperature distribution in different temperature cold source the heat transfer performance, indicates that the loop heat pipe condenser total thermal resistance and utilization effect of cold source temperature. Loop heat pipe has a variable thermal conductivity and thermal conductivity of the fixed area: in a variable thermal conductivity zone, loop heat pipe thermal resistance with the heat load increasing rapidly decreases, increasing temperature is helpful to reduce the cold source the total thermal resistance; thermal conductivity in fixed area, the total resistance is stable. The evaporator heat transfer coefficient increases with the heat load increases first and then decreases, but the change was significantly weakened in the cold source at higher temperature.

【作者单位】：北京空间飞行器总体设计部空间热控技术北京市重点实验室;西安交通大学热流科学与工程教育部重点实验室;
【基金】：国家自然科学基金资助项目(51406009)
【分类号】：TK172.4
【正文快照】： 1引言环路热管(Loop Heat Pipe,LHP)是一种利用毛细吸力提供循环动力的被动两相传热装置[1-2]。由于装配灵活、可长距离输送、低热阻、反重力等特性,LHP已成功应用于电子器件冷却、航天器和潜艇等热控系统[3-4]。美国和俄罗斯的航天器大多在LHP储液器上安装半导体致冷器进行主

【相似文献】