气候变化领域集成服务门户(CCPortal): Numerical optimization of the installing position for the L-shaped TPCT in a permafrost embankment based on the spatial heat control

CCPortal

DOI	10.1016/j.solener.2021.06.044
	Numerical optimization of the installing position for the L-shaped TPCT in a permafrost embankment based on the spatial heat control
	Pei, Wansheng; Zhang, Mingyi; Wan, Xusheng; Lai, Ying; Wang, Chong
通讯作者	Zhang, MY (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China.
发表日期	2021
ISSN	0038-092X
EISSN	1471-1257
起始页码	1406
结束页码	1425
卷号	224
英文摘要	The traditional design of TPCTs in embankment can cause differential frost heave due to the differential cooling effect in space. To enhance the control performance of the TPCTs, we numerically evaluated the influence of installing position on the spatial heat control, including the L-shaped TPCTs at shoulders, at slopes, and at toes. The results show that: (1) the position can affect the work performance of the L-shaped TPCTs. The annual accumulated power of the L-shaped TPCT reduces from 115.0 kW at shoulder to 101.2 kW at slope in the 20th year; (2) although the embankment with L-shaped TPCTs at shoulders has the minimum net annual heat absorption of 24.7 MJ, differential temperature exists for the shallow ground; (3) the L-shaped TPCTs at slopes can both reduce the spatial temperature difference and strengthen the cooling capacity for the deep permafrost. The maximum lateral cooling distance can reach 23.0 m; and (4) the cooling depth is weakened when the L-shaped TPCTs were installed at toes. Meanwhile, its cooling effect on the center section is insufficient due to the bimodal temperature distributions. Furthermore, it can cause slightly asymmetrical temperature distribution for the deep permafrost. Therefore, the installing position of L-shaped TPCT should be considered to develop its control performance in permafrost regions.
关键词	2-PHASE CLOSED THERMOSIPHON QINGHAI-TIBET HIGHWAY COOLING PERFORMANCE FIELD EXPERIMENT REGIONS SETTLEMENT SIMULATION STABILITY
英文关键词	L-shaped TPCT; Installing position; Spatial heat control; Numerical optimization; Permafrost region
语种	英语
WOS研究方向	Energy & Fuels
WOS类目	Energy & Fuels
WOS记录号	WOS:000686909800006
来源期刊	SOLAR ENERGY
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254106
作者单位	[Pei, Wansheng; Zhang, Mingyi] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China; [Pei, Wansheng; Zhang, Mingyi; Wang, Chong] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Wan, Xusheng] Southwest Petr Univ, Sch Civil Engn & Geomat, Chengdu 610500, Peoples R China; [Lai, Ying] Zhejiang Univ, Coll Civil Engn & Architecture, Hangzhou 310058, Peoples R China
推荐引用方式 GB/T 7714	Pei, Wansheng,Zhang, Mingyi,Wan, Xusheng,et al. Numerical optimization of the installing position for the L-shaped TPCT in a permafrost embankment based on the spatial heat control[J]. 中国科学院西北生态环境资源研究院,2021,224.
APA	Pei, Wansheng,Zhang, Mingyi,Wan, Xusheng,Lai, Ying,&Wang, Chong.(2021).Numerical optimization of the installing position for the L-shaped TPCT in a permafrost embankment based on the spatial heat control.SOLAR ENERGY,224.
MLA	Pei, Wansheng,et al."Numerical optimization of the installing position for the L-shaped TPCT in a permafrost embankment based on the spatial heat control".SOLAR ENERGY 224(2021).