干旱区生态环境知识资源中心(Arid): Simplified heat-transfer calculation for the trapezoidal cross-section wall in Gobi solar greenhouses and greenhouse thermal-load prediction

Arid

DOI	10.1016/j.biosystemseng.2023.08.014
	Simplified heat-transfer calculation for the trapezoidal cross-section wall in Gobi solar greenhouses and greenhouse thermal-load prediction
	Zhang, Xiaodan; Xie, Jianming; Zhang, Jing; Li, Jing; Ma, Ning; Mao, Erye
通讯作者	Xie, JM
来源期刊	BIOSYSTEMS ENGINEERING
ISSN	1537-5110
EISSN	1537-5129
出版年	2023
卷号	234 页码:46-65
英文摘要	Gobi solar greenhouses (GSGs) with trapezoidal cross-section walls, through the passive utilisation of solar energy, provide appropriate environmental conditions for sustainable crop growth in otherwise non-arable lands. The Hexi Corridor in China is known for its serious desertification and cold climate putting pressure on the regional GSG production; there, auxiliary heating strategies according to the greenhouse thermal load are required for maintaining plant thermal comfort. However, the highly transient heat transfer of the trapezoidal cross-section wall makes the GSG thermal-load evaluation challenging. This study proposes a new, simple, and accurate approach for calculating the dynamic heat transfer of the trapezoidal cross-section wall. The heat-transfer resistances quantifying the steady-state thermal behaviour of the wall and the unit frequency-response functions describing the transient one were obtained by using discrete Fourier series and a twodimensional frequency-domain finite-element model. These predetermined factors allowed the calculation of the hourly space-heat gain through the trapezoidal cross-section wall in a spreadsheet under arbitrary boundary conditions. The new approach was experimentally validated under different weather conditions. Furthermore, a GSG thermal load prediction model was developed. The results showed that, in a typical sunny phase, the heating load occurred around 8:00 and lasted four hours every day, averaging 0.56 GJ per day; in the coldest phase, the heating load occurred during the entire daytime and part of the night-time, averaging 1.42 GJ per day. This approach should be insightful regarding the heating-system planning during GSG design and environment-regulating judgement during GSG operation. (c) 2023 IAgrE. Published by Elsevier Ltd. All rights reserved.
英文关键词	Greenhouse heavyweight wall Solar energy Dynamic heat transfer Frequency-domain finite-element model Simplified method
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001095659000001
WOS关键词	TIME-DOMAIN ; PERFORMANCE ; VALIDATION ; SIMULATION ; CONDUCTION ; BUILDINGS ; GAIN
WOS类目	Agricultural Engineering ; Agriculture, Multidisciplinary
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/395577
推荐引用方式 GB/T 7714	Zhang, Xiaodan,Xie, Jianming,Zhang, Jing,et al. Simplified heat-transfer calculation for the trapezoidal cross-section wall in Gobi solar greenhouses and greenhouse thermal-load prediction[J],2023,234:46-65.
APA	Zhang, Xiaodan,Xie, Jianming,Zhang, Jing,Li, Jing,Ma, Ning,&Mao, Erye.(2023).Simplified heat-transfer calculation for the trapezoidal cross-section wall in Gobi solar greenhouses and greenhouse thermal-load prediction.BIOSYSTEMS ENGINEERING,234,46-65.
MLA	Zhang, Xiaodan,et al."Simplified heat-transfer calculation for the trapezoidal cross-section wall in Gobi solar greenhouses and greenhouse thermal-load prediction".BIOSYSTEMS ENGINEERING 234(2023):46-65.