气候变化领域集成服务门户(CCPortal): Evaluation of the ground heat control capacity of a novel air-L-shaped TPCT-ground (ALTG) cooling system in cold regions

CCPortal

DOI	10.1016/j.energy.2019.04.156
	Evaluation of the ground heat control capacity of a novel air-L-shaped TPCT-ground (ALTG) cooling system in cold regions
	Pei, Wansheng; Zhang, Mingyi; Lai, Yuanming; Yan, Zhongrui; Li, Shuangyang
发表日期	2019
ISSN	0360-5442
EISSN	1873-6785
起始页码	655
结束页码	668
卷号	179
英文摘要	How to effectively release excess ground heat to cool permafrost by using renewable ambient cool energy is an important issue because many environmental and engineering problems are associated with permafrost degradation. Two-phase closed thermosyphons (TPCTs) are widely used in many heat transfer applications. In this paper, a field experiment was conducted to evaluate the cooling performance of an air-L-shaped TPCT-ground (ALTG) cooling system used in permafrost embankments. We then developed a coupled model to describe the energy process of the ALTG cooling system, including the coupled ALTG heat transfer and the heat conduction with phase change for the permafrost ground. The model was validated by the field experiment. Both experimental and numerical results indicate that the cooling system can improve the heat releasing from ground to atmosphere, especially in the first four years. Finally, an improved ALTG system was proposed to enhance the absorption of ambient cool energy for a wider high-grade highway based on series of numerical simulations. Simulation results showed that the improved system could sufficiently extend the horizontal cooling extent under the embankment. This specially designed ALTG system will contribute to the control of ground heat using ambient cool energy in cold regions. (C) 2019 Elsevier Ltd. All rights reserved.
英文关键词	Ambient cool energy; Ground heat control; Cooling system; System modeling; Cold region
语种	英语
WOS研究方向	Thermodynamics ; Energy & Fuels
WOS类目	Thermodynamics ; Energy & Fuels
WOS关键词	2-PHASE CLOSED THERMOSIPHON ; THERMAL PERFORMANCE ; NUMERICAL-SIMULATION ; PIPE ; EMBANKMENT ; OPTIMIZATION ; R134A ; RATIO ; ANGLE
WOS记录号	WOS:000472813800055
来源期刊	ENERGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/239452
作者单位	[Pei, Wansheng; Zhang, Mingyi; Lai, Yuanming; Yan, Zhongrui; Li, Shuangyang] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Gansu, Peoples R China; [Yan, Zhongrui] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Pei, Wansheng,Zhang, Mingyi,Lai, Yuanming,et al. Evaluation of the ground heat control capacity of a novel air-L-shaped TPCT-ground (ALTG) cooling system in cold regions[J],2019,179.
APA	Pei, Wansheng,Zhang, Mingyi,Lai, Yuanming,Yan, Zhongrui,&Li, Shuangyang.(2019).Evaluation of the ground heat control capacity of a novel air-L-shaped TPCT-ground (ALTG) cooling system in cold regions.ENERGY,179.
MLA	Pei, Wansheng,et al."Evaluation of the ground heat control capacity of a novel air-L-shaped TPCT-ground (ALTG) cooling system in cold regions".ENERGY 179(2019).