突出气相压头的环路热管真空度对启动性能的影响

张国栋; 孙欢; 诸凯; 李雪强; 杨圳; 王雅博

doi:10.3969/j.issn.0253-4339.2020.03.147

您当前的位置：

首页 >

文章列表页 >

突出气相压头的环路热管真空度对启动性能的影响

更新时间：2024-07-18

- 突出气相压头的环路热管真空度对启动性能的影响
- Effect of Vacuum on the Start-up Performance of Loop Heat Pipe Enhanced by Pressure Head of Evaporation
- 制冷学报 2020年41卷第3期
- 作者机构：
  
  天津商业大学天津市制冷技术重点实验室
- 作者简介：
- 基金信息：
  
  国家自然科学基金（51376137）项目资助。
- DOI：10.3969/j.issn.0253-4339.2020.03.147
  中图分类号：
- 纸质出版日期：2020-01-01，
- 稿件说明：
移动端阅览
张国栋, 孙欢, 诸凯, 等. 突出气相压头的环路热管真空度对启动性能的影响[J]. 制冷学报, 2020,41(3).

ZHANG GUODONG, SUN HUAN, ZHU KAI, et al. Effect of Vacuum on the Start-up Performance of Loop Heat Pipe Enhanced by Pressure Head of Evaporation. [J]. Journal of refrigeration, 2020, 41(3).
张国栋, 孙欢, 诸凯, 等. 突出气相压头的环路热管真空度对启动性能的影响[J]. 制冷学报, 2020,41(3). DOI： 10.3969/j.issn.0253-4339.2020.03.147.

ZHANG GUODONG, SUN HUAN, ZHU KAI, et al. Effect of Vacuum on the Start-up Performance of Loop Heat Pipe Enhanced by Pressure Head of Evaporation. [J]. Journal of refrigeration, 2020, 41(3). DOI： 10.3969/j.issn.0253-4339.2020.03.147.

摘要

在环路热管运行中工质蒸发产生的气相压头有着重要作用。为了研究工质相变产生的气相压头的影响，本文设计了一种新型结构，将环路热管蒸发器内的吸液芯与加热底板彻底分离形成蒸发腔，使蒸发器内的传热传质相对分离，维持蒸发现象仅在蒸发腔内发生，以此来提高环路热管的驱动力。本文选用导热系数较低的不锈钢-镍作为吸液芯材料，尽可能的减少蒸发器的“漏热”现象。通过实验研究了不同真空度（95.3~101.1 kPa）时环路热管系统的启动性能。结果表明：此类型的环路热管可以在不同真空度下正常运行，并且真空度越高，环路热管的运行温度越低，启动时间越短，热阻越低。同时将突出气相压头的环路热管与另外三种不同结构的毛细抽力环路热管进行对比，发现突出气相压头的环路热管具有更低的运行热阻（0.14 ℃/W）。

Abstract

The influence of the pressure head of evaporation on the operation of a loop heat pipe (LHP) is important to the performance of LHP. In this paper

the wick was separated from the heating surface;consequently

a steam chamber was formed. Simultaneously

the heat and mass transfer in the evaporator were separated. Consequently

the driving force (especially the pressure head of evaporation) was enhanced. Heat leakage was decreased as much as possible due to the low thermal conductivity of the wick. Experiments were conducted to investigate the effectof different partial vacuums(95.3–101.1 kPa) on the start-up performance for the new LHP. This newdesign was able to operate at different partial vacuums; the operating temperature

start-up time

and thermal resistance decreased with increasedpartial vacuum. Simultaneously

this LHP showed a lower thermal resistance (0.14oC/W) compared with that of LHP driven by capillary forces.

关键词

环路热管气相压头真空度运行温度热阻

Keywords

loop heat pipeevaporation pressurevacuum degreeoperating temperaturethermal resistance

references

浏览量

1865

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

突出气相压头的环路热管启动特性实验与可视化研究

平板型mLHP实验研究

基于遗传算法的热管多目优化设计

改进型真空制冰系统的性能研究

水-乙醇混合工质振荡热管的传热特性研究