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热管科学与技术

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ISSN 打印: 2151-7975

ISSN 在线: 2151-7991

EXPERIMENTAL ANALYSIS OF HEAT AND MASS TRANSFER IN SMALL DIMENSION, TWO-PHASE LOOP THERMOSYPHONS

卷 1, 册 2, 2010, pp. 163-182
DOI: 10.1615/HeatPipeSciTech.v1.i2.40
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摘要

This paper analyzes the thermo-fluid dynamics of compact two-phase loops with natural circulation which are mainly ruled by the heat input supplied to the evaporator. The objective is to understand if in small two-phase thermosyphons the heat-transfer performances are only due to the heat transfer in the evaporator section rather than the fluid-dynamic characteristics of the entire loop. The results of the experimental analysis are obtained with water and FC72 and with two different types of loop thermosyphons. The first, type A, is characterized by the evaporator internal diameter much larger than the bubble diameter, while in the second, type B, evaporator and connecting pipes have diameters 4−5 times larger than the bubble diameter. For both thermosyphons capillary forces are not involved in the heat and mass transfer. For the type A thermosyphon the performances are mainly influenced only by the heat-transfer regime in the evaporator section, and in type B thermosyphons, the performances are influenced by the fluid-dynamic characteristics of the whole loop, and mainly by the mass flow rate.

对本文的引用
  1. Franco Alessandro, Filippeschi Sauro, Closed Loop Two-Phase Thermosyphon of Small Dimensions: a Review of the Experimental Results, Microgravity Science and Technology, 24, 3, 2012. Crossref

  2. Franco Alessandro, Filippeschi Sauro, Experimental analysis of Closed Loop Two Phase Thermosyphon (CLTPT) for energy systems, Experimental Thermal and Fluid Science, 51, 2013. Crossref

  3. Franco Alessandro, Vaccaro Maurizio, On the use of heat pipe principle for the exploitation of medium–low temperature geothermal resources, Applied Thermal Engineering, 59, 1-2, 2013. Crossref

  4. Xiong Zhenqin, Ye Cheng, Wang Minglu, Gu Hanyang, Experimental study on the sub-atmospheric loop heat pipe passive cooling system for spent fuel pool, Progress in Nuclear Energy, 79, 2015. Crossref

  5. Jafari Davoud, Franco Alessandro, Filippeschi Sauro, Di Marco Paolo, Two-phase closed thermosyphons: A review of studies and solar applications, Renewable and Sustainable Energy Reviews, 53, 2016. Crossref

  6. Chen Yongping, Yu Fawen, Zhang Chengbin, Liu Xiangdong, Experimental study on thermo-hydrodynamic behaviors in miniaturized two-phase thermosyphons, International Journal of Heat and Mass Transfer, 100, 2016. Crossref

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  8. Wang Yinfeng, Lu Beibei, Chen Haijun, Fan Hongtu, Taylor Robert A., Zhu Yuezhao, Experimental investigation of the thermal performance of a horizontal two-phase loop thermosiphon suitable for solar parabolic trough receivers operating at 200–400 °C, Energy, 132, 2017. Crossref

  9. Padovan Andrea, Bortolin Stefano, Rossato Marco, Filippeschi Sauro, Del Col Davide, Vaporization Heat Transfer in a Small Diameter Closed Two-Phase Thermosyphon, Journal of Heat Transfer, 141, 9, 2019. Crossref

  10. Xu Junxiu, Hou Mingwen, Ding Ming, Yan Changqi, Yue Zhiting, Fan Guangming, Experimental Study on Separate Heat Pipe-type Passive Residual Heat Removal System of Swimming Pool-type Low-Temperature Heating Reactor, Nuclear Engineering and Design, 391, 2022. Crossref

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