Experimental investigation on loop thermosyphon thermal performance with flow visualization
Experimental investigation on loop thermosyphon thermal performance with flow visualization
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DOI：
10.1016/j.ijheatmasstransfer.2020.119312
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发表时间：
2020-04
影响因子：
5.2
通讯作者：
Sara Kloczko;A. Faghri
中科院分区：
文献类型：
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作者：
Sara Kloczko;A. Faghri
提出了一种无毛细作用的非相变热管（NPCHP），该热管在稳态运行时不依赖于毛细作用或相变，其传热是由对热输入的压力响应驱动的，而不是相变。最近表明，NPCHP不是所建议的新热管，而是回路热虹吸管（Kloczko等人，2019年）。这项工作的重点是了解如何改变不同的系统参数，包括热输入，填充比，倾斜角，和工作流体影响单相和两相回路热虹吸管的整体系统性能。流动显示被纳入和液体/蒸汽通过热虹吸管的流动进行了研究。取决于回路热虹吸器和工作流体的初始填充比，示出热虹吸器作为两相回路热虹吸器或单相回路热虹吸器操作。
A non-phase change heat pipe (NPCHP) with no wick was proposed as a new heat pipe which is not dependent on a wick or phase change at steady state operation and where the heat transfer is driven by the pressure response to a heat input, rather than phase change. It was shown recently that the NPCHP is not a new heat pipe as suggested but is a loop thermosyphon (Kloczko et al., 2019). This effort focuses on understanding how changing different system parameters, including heat input, fill ratio, inclination angle, and working fluid affects the overall system performance of both the single-phase and two-phase loop thermosyphons. Flow visualization is incorporated and the flow of liquid/vapor through the thermosyphon is studied. Depending upon the initial fill ratio of the loop thermosyphon and the working fluid, the thermosyphon is shown to either operate as a two-phase loop thermosyphon or a single-phase loop thermosyphon.