不同加热功率条件下钠钾合金热管启动和传热性能

郭航; 贾先剑; 郭青; 闫小克; 叶芳; 马重芳

doi:10.13224/j.cnki.jasp.2019.01.001

不同加热功率条件下钠钾合金热管启动和传热性能

doi: 10.13224/j.cnki.jasp.2019.01.001

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及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热工计量科学研究所，北京 100013

基金项目: 国家重点研发计划课题（2017YFF0205901）

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出版历程
- 收稿日期: 2018-01-27
- 刊出日期: 2019-01-28

Start-up and heat transfer performance of a sodium-potassium alloy heat pipe under different conditions of heating power

摘要

摘要: 以钠钾合金（NaK-55）为工质进行实验，分别在800、1000、1200、1400、1600W的加热功率条件下对钠钾合金热管的启动和传热性能进行研究。实验结果表明：在800~1600W加热功率范围内，在冷却水冷却条件下，该钠钾合金热管可以完全启动并进入稳定工作状态。随着加热功率的提高，热管外壁面温度整体略有增加，冷凝段启动时间缩短，钠钾合金热管的当量传热系数、蒸发区表面传热系数、冷凝区表面传热系数随加热功率的提高成线性增加。
- 热管 /
- 钠钾合金 /
- 传热 /
- 加热功率 /
- 相变
Abstract: A sodium-potassium ally (45-wt.%-Na and 55-wt.%-K) heat pipe was experimentally tested to investigate the effect of heating powers (800, 1000, 1200, 1400, and 1600W) on start-up and heat transfer performances. The results showed that under the tested operation conditions, the sodium-potassium ally heat pipe presented an optimal start-up performance with the heating power. Within the range of 800-1600W of heating power, the heat pipe could achieve a dynamic equilibrium state of heat transfer as the heat was carried away by cooling water in time, and the heat transfer coefficient of the sodium-potassium ally heat pipe, convective heat transfer coefficients of evaporator and condenser sections almost linearly increased with the heating power.
- heat pipe /
- sodium-potassium alloy /
- heat transfer /
- heating power /
- phase change

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参考文献(24)

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