Evaluation of heating capacity of shallow ground heat exchangers in different Locations– A case study of two administrative districts of Xi'an

Li, Chao; Jiang, Chao; Guan, Yongqiang; Meng, Qingjuan; Chen, Hao; Zhang, S. Q.

doi:10.1016/j.enbuild.2023.113276

Energy and Buildings

2023

DOI: 10.1016/j.enbuild.2023.113276

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Evaluation of heating capacity of shallow ground heat exchangers in different Locations– A case study of two administrative districts of Xi'an

Chao Li

Chao Jiang

Yongqiang Guan

et al.

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2024

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Heat Transfer Performance and Operation Scheme of the Deeply Buried Pipe Energy Pile Group

Tian,

Chen,

Yuan

et al. 2024

Applied Sciences

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This paper describes a study on the heat transfer properties of the deeply buried pipeline energy pile group, which is an efficient and convenient geothermal development technology. Through in situ experiments and a simulation algorithm, the research investigated the heat transmission characteristics of the deeply buried pipe energy pile group and optimized different intermittent operation schemes. The findings suggest that prolonged operation of the pile cluster intensifies heat buildup within the pile foundation, thereby adversely affecting the system’s overall heat exchange efficiency. Employing an intermittent operating mode can alleviate this heat accumulation phenomenon, thereby promoting sustained heat exchange performance of the piles over time. To evaluate the comprehensive thermal interaction and energy efficiency ratio of the energy pile heat exchange system, various intermittent operation strategies were compared in the study. Among them, the intermittent operational scheme with a ratio of n = 5 was found to be optimal, with the total average heat transfer rate of the pile set only 0.51% lower than that of the continuous operational mode, but the overall energy efficiency ratio improved by 19.6%. The intermittent operational mode proposed in this study can achieve the goal of saving energy and efficiently extracting geothermal resources, providing theoretical guidance for the extraction and utilization of subsurface geothermal power by energy piles.

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Heat Transfer Performance and Operation Scheme of the Deeply Buried Pipe Energy Pile Group

Tian,

Chen,

Yuan

et al. 2024

Applied Sciences

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show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

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Evaluation of heating capacity of shallow ground heat exchangers in different Locations– A case study of two administrative districts of Xi'an

Cited by 1 publication

References 27 publications

Heat Transfer Performance and Operation Scheme of the Deeply Buried Pipe Energy Pile Group

Heat Transfer Performance and Operation Scheme of the Deeply Buried Pipe Energy Pile Group

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