Experimental investigation of the effects of heat transport pipeline configurations on the performance of a passive phase-change cooling system

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	Experimental investigation of the effects of heat transport pipeline configurations on the performance of a passive phase-change cooling system
	Guo, Cong 1,2; Wang, Tao 1; Hu, Xuegong 1; Tang, Dawei 1
刊名	EXPERIMENTAL THERMAL AND FLUID SCIENCE
	2014-05-01
卷号	55 页码:21-28
关键词	Passive cooling system Condensation Phase-change Heat transport pipeline Heat coefficient
英文摘要	The separate-type passive phase-change cooling systems provide considerable flexibility in the placement of the evaporator and condenser. An experimental study of flow characteristics and heat transfer during condensation inside the connecting section, i.e. heat transport pipeline, was conducted. Measurements were made in round tubes with diameters ranging from 20 to 38 mm, lengths from 1 to 6 m, and inclination angles from 0 to 30. Distilled water was used as the working fluid. The study primarily took into account the effect of various parameters (inner diameter, length and inclination angle) on the performance of a cooling system. Flow visualization showed that at all operating conditions the flow pattern was the droplet flow. Heat transfer coefficient increased with increasing tube length, inner diameter and inclination angle. The system pressure drop also increased with an increase in the tube length while decreased with increasing inclination angle. For a constant heat load, an obvious decrease of evaporator temperature was observed for longer tubes. Moreover, the cooling system needed a certain time (defined as "delayed time", represented the robustness of the system) to reach the steady-state again when the heat load increased. Different tube configurations can result in different "delayed time". (C) 2014 Elsevier Inc. All rights reserved.
WOS标题词	Science & Technology ; Physical Sciences ; Technology
类目[WOS]	Thermodynamics ; Engineering, Mechanical ; Physics, Fluids & Plasmas
研究领域[WOS]	Thermodynamics ; Engineering ; Physics
关键词[WOS]	HORIZONTAL TUBES ; FLOW PATTERNS ; 2-PHASE FLOW ; CONDENSATION ; PRESSURE ; PIPES
收录类别	SCI
语种	英语
WOS记录号	WOS:000337648600004
公开日期	2015-12-22
内容类型	期刊论文
源URL	[http://ir.etp.ac.cn/handle/311046/106070]
专题	工程热物理研究所_中国科学院工程热物理所（论文库）_期刊论文（SCI）
作者单位	1.Chinese Acad Sci, Inst Engn Thermophys, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Guo, Cong,Wang, Tao,Hu, Xuegong,et al. Experimental investigation of the effects of heat transport pipeline configurations on the performance of a passive phase-change cooling system[J]. EXPERIMENTAL THERMAL AND FLUID SCIENCE,2014,55:21-28.
APA	Guo, Cong,Wang, Tao,Hu, Xuegong,&Tang, Dawei.(2014).Experimental investigation of the effects of heat transport pipeline configurations on the performance of a passive phase-change cooling system.EXPERIMENTAL THERMAL AND FLUID SCIENCE,55,21-28.
MLA	Guo, Cong,et al."Experimental investigation of the effects of heat transport pipeline configurations on the performance of a passive phase-change cooling system".EXPERIMENTAL THERMAL AND FLUID SCIENCE 55(2014):21-28.