Heat transfer performance of pulsating heat pipe with hygroscopic salt solution

Hang ZHANG; Jianhua WENG; Xiaoyu CUI

doi:10.11949/j.issn.0438-1157.20180661

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Heat transfer performance of pulsating heat pipe with hygroscopic salt solution

Fluid dynamics and transport phenomena | 更新时间：2026-07-24

- Heat transfer performance of pulsating heat pipe with hygroscopic salt solution
- CIESC Journal Vol. 70, Issue 3, Pages: 874-882(2019)
- 作者机构：
  
  1.上海电力学院能源与机械工程学院，上海 200090
  2.上海理工大学能源与动力工程学院，上海 200093
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20180661
  CLC： TK 124
- Received：15 June 2018，
  
  Revised：2018-11-16，
  
  Online First：24 July 2026，
  
  Published：05 March 2019
- 稿件说明：
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张航, 翁建华, 崔晓钰. 吸湿性盐溶液振荡热管的传热特性研究[J]. 化工学报, 2019, 70(3): 874-882

ZHANG Hang, WENG Jianhua, CUI Xiaoyu. Heat transfer performance of pulsating heat pipe with hygroscopic salt solution[J]. CIESC Journal, 2019, 70(3): 874-882
张航, 翁建华, 崔晓钰. 吸湿性盐溶液振荡热管的传热特性研究[J]. 化工学报, 2019, 70(3): 874-882 DOI： 10.11949/j.issn.0438-1157.20180661.

ZHANG Hang, WENG Jianhua, CUI Xiaoyu. Heat transfer performance of pulsating heat pipe with hygroscopic salt solution[J]. CIESC Journal, 2019, 70(3): 874-882 DOI： 10.11949/j.issn.0438-1157.20180661.

摘要

研究了10%(质量分数)LiCl吸湿性盐溶液作为工质的振荡热管传热特性。测试了在45％～90％充液率、10～100 W加热功率下振荡热管蒸发端温度及热阻的变化，并与去离子水工质的实验数据进行了对比。结果表明：在45％、55％的低充液率下，加热功率达到50 W以上时，LiCl溶液振荡热管的热阻明显比去离子水振荡热管低，能有效延迟烧干现象的发生。在62%的中等充液率，35W加热功率以上，LiCl溶液振荡热管的蒸发端温度较离子水振荡热管振荡频率快，幅度小且热阻低。在80%、90%的高充液率下，两种工质振荡热管的蒸发端温度曲线在平均温度、振荡频率、振荡幅度上都较为相似，热阻也比较接近。

Abstract

The heat transfer characteristics of the 10% (mass) concentration LiCl hygroscopic salt solution as the oscillating heat pipe of the working fluid were studied. The 10% LiCl salt solution was prepared to test the PHP evaporator section temperature and the thermal resistance at 45%—90% filling rate and 10—100 W heating power. Besides

that of deionized water PHP was compared. The results show that at the low filling rate of 45% and 55%

when the heating power reaches over 50 W

the thermal resistance of LiCl solution pulsating heat pipe is obviously lower than that of the deionized water PHP. LiCl solution can effectively delay the occurrence of dry-out phenomenon and reduce the thermal resistance of the PHP. At the filling rate of 62%

when the heating power reaches over 35 W

the evaporator section temperature curve of LiCl solution PHP has higher oscillation frequency and smaller oscillation amplitude. The thermal resistance of LiCl solution PHP at different heat power is lower than that of the deionized water PHP. At the high filling rate of 80% and 90%

the temperature curves of the evaporator section of the two types of PHP are similar for the average temperature

the oscillation frequency and the amplitude. The thermal resistance is relatively close.

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references

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