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首页> 外文期刊>International Journal of Heat and Mass Transfer >Operating characteristics of a miniature cryogenic loop heat pipe
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Operating characteristics of a miniature cryogenic loop heat pipe

机译：微型低温回路热管的工作特性

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摘要

Aiming at future space applications, a miniature cryogenic loop heat pipe (CLHP) with nitrogen as the working fluid was designed, whose condenser could provide the interface with the cold finger of cryoco-oler, and its operating characteristics were experimentally investigated in this work. Based on the experimental results, important conclusions below have been drawn: (1) with only 2.5 W applied to the secondary evaporator, the CLHP can realize the supercritical startup, and the larger the heat load applied to the secondary evaporator, the sooner the temperature drop process of the primary evaporator; (2) when the heat load applied to the primary evaporator is no less than 3 W, the primary evaporator can operate independently; whereas when it is smaller than 3 W, the secondary evaporator must be kept in operation to assist the normal operation of the primary evaporator; (3) the CLHP has a heat transport capacity of 12 W × 0.56 m, and its thermal resistance decreases with the increase of the heat load applied to the primary evaporator; (4) the CLHP has the ability to operate with a small heat load applied to the primary evaporator for a long time, and manifests good thermal control performance.
机译：针对未来的空间应用，设计了一种以氮气为工作流体的微型低温回路热管（CLHP），其冷凝器可提供与低温油冷指的界面，并对其工作特性进行了实验研究。根据实验结果，得出以下重要结论：（1）仅在次级蒸发器上施加2.5 W功率，CLHP即可实现超临界启动，并且次级蒸发器上施加的热负荷越大，温度越早主蒸发器的下降过程； （2）当施加于主蒸发器的热负荷不小于3W时，主蒸发器可以独立运行；而当其小于3 W时，辅助蒸发器必须保持运行以辅助主要蒸发器的正常运行； （3）CLHP的传热能力为12 W×0.56 m，并且其热阻随着施加在一次蒸发器上的热负荷的增加而降低； （4）CLHP能够长时间以较小的热负荷施加到主蒸发器上，并且具有良好的热控制性能。

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