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DOI	10.1016/j.coldregions.2013.08.006
	Laboratory investigation of the heat transfer characteristics of a two-phase closed thermosyphon
	Zhang, Mingyi; Lai, Yuanming; Dong, Yuanhong; Jin, Long; Pei, Wansheng; Harbor, Jon
发表日期	2013
ISSN	0165-232X
EISSN	1872-7441
起始页码	67
结束页码	73
卷号	95
英文摘要	Two-phase closed thermosyphons (TPCTs) are widely used as heat transfer devices in engineering structures in permafrost regions to prevent freeze-thaw damage. In this paper, we reported on a laboratory experiment to study the heat transfer characteristics and working state of a TPCT installed in the soil based on the typical temperature conditions in the permafrost regions of the Qinghai-Tibet Plateau. The results indicated that when the temperature of the condenser section was lower than that of the evaporator section, and the negative temperature difference between the condenser and evaporator sections was beyond a critical temperature difference, the TPCT was active; otherwise, the TPCT was inactive. The critical temperature difference between the condenser and evaporator sections that was required for the TPCT to begin to work was defined as the startup temperature difference. Furthermore, we found that the efficiency of the TPCT improved linearly with the negative temperature difference between the condenser and evaporator sections when the TPCT was working. In this study, the startup temperature difference of the TPCT was about -0.20 degrees C and the total thermal resistance was about 031 degrees C/W. These results provide a basis for future work evaluating and improving the performance of TPCTs used for embankment design in permafrost regions. (C) 2013 Elsevier B.V. All rights reserved.
英文关键词	Laboratory investigation; Heat transfer characteristic; Thermal semi-conduction effect; Two-phase closed thermosyphon; Permafrost region
语种	英语
WOS研究方向	Engineering ; Geology
WOS类目	Engineering, Environmental ; Engineering, Civil ; Geosciences, Multidisciplinary
WOS关键词	PERMAFROST REGIONS
WOS记录号	WOS:000325834000007
来源期刊	COLD REGIONS SCIENCE AND TECHNOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/239507
作者单位	[Zhang, Mingyi; Lai, Yuanming; Jin, Long; Pei, Wansheng] Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Frozen Soil Engn, Lanzhou 730000, Gansu, Peoples R China; [Dong, Yuanhong; Jin, Long] CCCC First Highway Consultants Co LTD, Minist Transport, Key Lab Highway Construct & Maintenance Technol P, Xian 710065, Shaanxi, Peoples R China; [Zhang, Mingyi; Harbor, Jon] Purdue Univ, Dept Earth Atmospher & Planetary Sci, W Lafayette, IN 47907 USA
推荐引用方式 GB/T 7714	Zhang, Mingyi,Lai, Yuanming,Dong, Yuanhong,et al. Laboratory investigation of the heat transfer characteristics of a two-phase closed thermosyphon[J],2013,95.
APA	Zhang, Mingyi,Lai, Yuanming,Dong, Yuanhong,Jin, Long,Pei, Wansheng,&Harbor, Jon.(2013).Laboratory investigation of the heat transfer characteristics of a two-phase closed thermosyphon.COLD REGIONS SCIENCE AND TECHNOLOGY,95.
MLA	Zhang, Mingyi,et al."Laboratory investigation of the heat transfer characteristics of a two-phase closed thermosyphon".COLD REGIONS SCIENCE AND TECHNOLOGY 95(2013).