Experimental study on hydrogen pulsating heat pipes under different number of turns
Experimental study on hydrogen pulsating heat pipes under different number of turns
复制标题
不同匝数下氢气脉动热管的实验研究
DOI：
10.1016/j.cryogenics.2020.103174
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发表时间：
2020-08
期刊：
影响因子：
2.1
通讯作者：
Liu Dongli
中科院分区：
文献类型：
--
作者：
Sun Xiao;Li Sizhuo;Jiao Bo;Gan Zhihua;Pfotenhauer John;Wang Bo;Zhao Qinyu;Liu Dongli
匝数是脉动热管的一个重要几何参数。目前，没有选择匝数的标准。为了研究匝数的影响，两个氢闭环脉动热管分别测试了2匝和5匝。其他参数保持不变。为了消除冷凝器温度的影响，在不同的热负荷下，冷凝器温度保持在19 K。实验在三种填充率（28%、34%和50%）下进行，热负荷在0和5.5W之间。结果表明，两种PHPs的导热系数在10，000 ~ 70，000 W/（m·K）之间，热阻在0.2 ~ 0.8 K/W之间。在各个填充率下，2圈PHP的有效导热系数均高于5圈PHP。但由于传热面积较小，2圈热管的热阻大于5圈热管。如果将2圈PHP缩放2.5倍，即总共5圈，则在低热阻和高有效传导率方面将优于5圈PHP。
The number of turns is an important geometric parameter of the pulsating heat pipe. Currently, there is no criterion for selecting the number of turns. To study the effects of the number of turns, two hydrogen closed-loop pulsating heat pipes were tested with 2 turns and 5 turns, respectively. Other parameters were kept the same. To eliminate the influence of the condenser temperature, the condenser temperature was maintained at 19 K under different heat loads. The experiments were carried out at three filling ratios, 28%, 34% and 50%, with a heat load between 0 and 5.5 W. The results show that thermal conductivities of both PHPs are in the range of 10,000 to 70,000 W/(m·K), and the thermal resistances are in the range of 0.2 to 0.8 K/W. The effective thermal conductivity of the 2-turn PHP is higher than that of the 5-turn PHP at each filling ratio. But the thermal resistance of the 2-turn PHP is larger than that of the 5-turn PHP due to the smaller heat transfer area. If the 2turn PHP is scaled 2.5 times, which is a total of 5 turns, it will outperform the 5-turn PHP in terms of low thermal resistance and high effective conductivity.
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影响因子：
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DOI：
10.1063/1.4706970
发表时间：
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期刊：
--
影响因子：
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DOI：
10.1115/ht2008-56160
发表时间：
2010-06
期刊：
Journal of heat transfer
影响因子：
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作者：
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通讯作者：
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作者：
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