Performance measurement and configuration optimization based on orthogonal simulation method of earth-to-air heat exchange system in cold-arid climate

doi:10.1016/j.enbuild.2024.114001

	Performance measurement and configuration optimization based on orthogonal simulation method of earth-to-air heat exchange system in cold-arid climate
	Zhang, Dong1,2 ; Zhang, Jingrui 1,2; Liu, Chunyang 1,2; Yan, Chengtao 1,2; Ji, Jinchao 1,2; An, Zhoujian 1
	2024-04-01
发表期刊	Energy and Buildings
ISSN	0378-7788
卷号	308
摘要	The earth-to-air heat exchanger (EAHE) is a remarkable technology that taps into the Earth's subsurface heat to either heat or cool the air circulating within buried underground pipes, which can effectively reduce building energy consumption. In cold-arid regions of northwest China, outdoor climate parameters vary considerably throughout the year, and shallow soil temperatures also fluctuate dramatically. This dynamic thermal environment significantly impacts the practical application of the EAHE system. Furthermore, the operation efficiency of the EAHE system can be influenced by the configuration of system parameters. Therefore, this paper takes an EAHE project in Lanzhou as the research object to investigate the operation performance, energy consumption and economy of EAHE in the cold-arid regions of Northwest China. The research results show that heat exchange potential is high in summer and winter, and the outlet temperature varies more gently in winter. During the summer, the cooling capacity of the system is sufficient to the cooling demands of the building, without using auxiliary equipment for cooling; compared to an air-cooled unit with a COP of 3.2, the system reduces cooling energy consumption by 2063.4 kWh. Moreover, we determined the influence degree and optimal scheme of each factor under different evaluation indexes through orthogonal simulation. The specific parameters of the optimal scheme are as follows: pipe length 20 m, pipe diameter 100 mm, buried depth 4 m, and airflow velocity 7 m/s. Compared with the original scheme, the heat transfer efficiency and heat transfer power of this scheme are increased by 37.91 % and 17.6 %, respectively, and the cost per unit heat transfer power is 11,700 CNY/kW, which is 8000 CNY/kW lower than the original scheme. © 2024 Elsevier B.V.
关键词	Arid regions Auxiliary equipment Cooling systems Energy utilization Heat exchangers Arid climates Cold-arid climate Configuration optimization Earth-to-air heat exchanger Heat exchange systems NorthWest China Optimal scheme Orthogonal simulation Performance measurements Power
DOI	10.1016/j.enbuild.2024.114001
收录类别	EI
语种	英语
出版者	Elsevier Ltd
EI入藏号	20241015690256
EI主题词	Air
EI分类号	443 Meteorology ; 444 Water Resources ; 525.3 Energy Utilization ; 616.1 Heat Exchange Equipment and Components ; 804 Chemical Products Generally ; 901 Engineering Profession
原始文献类型	Journal article (JA)
引用统计	无
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/169992
专题	能源与动力工程学院
通讯作者	Zhang, Dong
作者单位	1.School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Key Laboratory of Multi-supply System with Solar Energy and Biomass, Gansu Province, Lanzhou; 730050, China
第一作者单位	新能源学院
通讯作者单位	新能源学院
第一作者的第一单位	新能源学院
推荐引用方式 GB/T 7714	Zhang, Dong,Zhang, Jingrui,Liu, Chunyang,et al. Performance measurement and configuration optimization based on orthogonal simulation method of earth-to-air heat exchange system in cold-arid climate[J]. Energy and Buildings,2024,308.
APA	Zhang, Dong,Zhang, Jingrui,Liu, Chunyang,Yan, Chengtao,Ji, Jinchao,&An, Zhoujian.(2024).Performance measurement and configuration optimization based on orthogonal simulation method of earth-to-air heat exchange system in cold-arid climate.Energy and Buildings,308.
MLA	Zhang, Dong,et al."Performance measurement and configuration optimization based on orthogonal simulation method of earth-to-air heat exchange system in cold-arid climate".Energy and Buildings 308(2024).