气候变化领域集成服务门户(CCPortal): Mitigation of shady-sunny slopes effect on subgrade by photovoltaic sheltered boards in permafrost regions

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DOI	10.1016/j.applthermaleng.2024.123087
	Mitigation of shady-sunny slopes effect on subgrade by photovoltaic sheltered boards in permafrost regions
	Tian, Run-Ze; Li, Xiao-Kang; Zhang, Yu; Zhang, Lu-Xin; Yue, Zu-Run; Li, Xu
发表日期	2024
ISSN	1359-4311
EISSN	1873-5606
起始页码	248
卷号	248
英文摘要	With the great demand of global carbon reduction, a novel method, such as photovoltaic shelter board (PSB), is proposed to mitigate the shady -sunny slope effects in permafrost. The idea of PSB is an extension of traditional shelter board, which can potentially eliminate the shady -sunny slope effect in theory. However, its quantitative performance is still unclear due to limited application and research. To overcome this gap and explore the application possibilities of PSB in cold regions, this paper introduces a novel photovoltaic sheltered board subgrade and numerically investigates its effectiveness in mitigating the shady -sunny slope effect. Initially, a heat transfer model incorporating solar radiation and air convection was developed and validated with fieldmonitored ground temperature data. Analyses based on this model compare the thermal imbalance effects on exposed subgrade, traditional insulation boards subgrade, and the novel photovoltaic sheltered board subgrade. Results indicate that the photovoltaic sheltered board exhibits superior mitigation effects to traditional insulation boards, primarily due to enhanced heat dissipation by air convection in the suspension region. In the study area, the photovoltaic sheltered board significantly lowers sunny slope temperatures by over 3 degree celsius on average and thaw depth by more than 1m compared to exposed subgrade. The photovoltaic sheltered board ' s suspension height should not be less than 5.3cm to mitigate the sunny -shady slope effect effectively in this region. In summary, this study provides a reference for mitigating the shady -sunny slope effects and reducing carbon release in permafrost subgrade engineering.
英文关键词	Photovoltaic sheltered boards; Subgrade temperature field; Permafrost regions; Numerical simulation; Shady -sunny slopes
语种	英语
WOS研究方向	Thermodynamics ; Energy & Fuels ; Engineering ; Mechanics
WOS类目	Thermodynamics ; Energy & Fuels ; Engineering, Mechanical ; Mechanics
WOS记录号	WOS:001230815000001
来源期刊	APPLIED THERMAL ENGINEERING
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/301677
作者单位	Beijing Jiaotong University; Lanzhou Jiaotong University; Shijiazhuang Tiedao University
推荐引用方式 GB/T 7714	Tian, Run-Ze,Li, Xiao-Kang,Zhang, Yu,et al. Mitigation of shady-sunny slopes effect on subgrade by photovoltaic sheltered boards in permafrost regions[J],2024,248.
APA	Tian, Run-Ze,Li, Xiao-Kang,Zhang, Yu,Zhang, Lu-Xin,Yue, Zu-Run,&Li, Xu.(2024).Mitigation of shady-sunny slopes effect on subgrade by photovoltaic sheltered boards in permafrost regions.APPLIED THERMAL ENGINEERING,248.
MLA	Tian, Run-Ze,et al."Mitigation of shady-sunny slopes effect on subgrade by photovoltaic sheltered boards in permafrost regions".APPLIED THERMAL ENGINEERING 248(2024).