Effect of cooling water parameters on heat transfer performance of sodium-potassium alloy heat pipe

doi:10.11949/j.issn.0438-1157.20170631

CIESC Journal ›› 2017, Vol. 68 ›› Issue (S1): 105-110.DOI: 10.11949/j.issn.0438-1157.20170631

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Effect of cooling water parameters on heat transfer performance of sodium-potassium alloy heat pipe

ZHANG Hongzhe¹, JIA Xianjian¹, GUO Hang¹, GUO Qing¹, YAN Xiaoke², YE Fang¹, MA Chongfang¹

1. MOE Key Laboratory of Enhanced Heat Transfer and Energy Conservation, and Beijing Key Laboratory of Heat Transfer and Energy Conversion, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China;
2. National Institute of Metrology, Beijing 100013, China

Received:2017-05-16 Revised:2017-05-21 Online:2017-08-31 Published:2017-08-31
Supported by:
supported by the General Administration of Quality Supervision,Inspection and Quarantine of the People's Republic of China (2012QK357).

冷却水参数对钠钾合金热管传热性能影响

张弘喆¹, 贾先剑¹, 郭航¹, 郭青¹, 闫小克², 叶芳¹, 马重芳¹

1. 北京工业大学环境与能源工程学院, 传热强化与过程节能教育部重点实验室, 传热与能源利用北京市重点实验室, 北京 100124;
2. 中国计量科学研究院, 北京 100013

通讯作者: 郭航,hangguo@sohu.com
基金资助:
国家质检总局科技计划项目（2012QK357）。

Abstract

Abstract:

The parameter of cooling water has an important effect on heat transfer performance of sodium-potassium alloy thermosiphon (gravity-driven heat pipe). In this study,the effect of cooling water flow rate and temperature on heat transfer performance of a sodium-potassium alloy heat pipe was experimentally studied. The results show that the flow rate of the cooling water presents a significant impact on the outside wall temperature distribution of the heat pipe when it operates under a relative lower flow rates conditions of 4-18 ml·s^-1. But,no further influence of the flow rate is envisioned when the flow rate of the cooling water is more than 18 ml·s^-1. Totally,improvement of the flow rate is beneficial for enhancement of the heat transfer performance of the heat pipe. On the other hand,the temperature of cooling water shows very small impact on the outside wall temperature and heat transfer performance of the sodium-potassium alloy heat pipe.

Key words: thermosiphon, water cooling, temperature distribution, heat transfer, heat transfer coefficient

摘要：

冷却水参数对钠钾合金热管传热性能有重要影响，通过改变不同冷却水流量和冷却水温度，研究了冷却水参数对钠钾合金热管传热性能的影响规律。实验结果表明，钠钾合金热管运行于较低冷却水流量（4~18 ml·s^-1）的冷却条件时，流量对热管冷凝段外壁面的温度影响很大，而当热管运行于较高冷却水流量的冷却条件时，冷却水流量对热管外壁面温度影响较小。整体而言，增大冷却水流量可以有效地提高钠钾合金热管的传热量及其传热性能。当热管运行于较大冷却水流量的冷却条件时，冷却水温度的变化对热管传热性能影响较小。

关键词: 重力热管, 水冷, 温度分布, 传热, 传热系数

CLC Number:

TK172.4

ZHANG Hongzhe, JIA Xianjian, GUO Hang, GUO Qing, YAN Xiaoke, YE Fang, MA Chongfang. Effect of cooling water parameters on heat transfer performance of sodium-potassium alloy heat pipe[J]. CIESC Journal, 2017, 68(S1): 105-110.

张弘喆, 贾先剑, 郭航, 郭青, 闫小克, 叶芳, 马重芳. 冷却水参数对钠钾合金热管传热性能影响[J]. 化工学报, 2017, 68(S1): 105-110.

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Effect of cooling water parameters on heat transfer performance of sodium-potassium alloy heat pipe

冷却水参数对钠钾合金热管传热性能影响

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