Influence of long-term operation of ground source heat pump on geothermal field in heat transfer area

ZHANG Hua; HAO Shu-ren; LIU Li-hong; DONG Wu-jun; CHENG Tong; HU Hui-juan

doi:10.13686/j.cnki.dzyzy.2025.02.012

2025 Vol. 34, No. 2

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Article navigation > Geology and Resources > 2025 > 34(2): 246-254

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ZHANG Hua, HAO Shu-ren, LIU Li-hong, DONG Wu-jun, CHENG Tong, HU Hui-juan. Influence of long-term operation of ground source heat pump on geothermal field in heat transfer area[J]. Geology and Resources, 2025, 34(2): 246-254. doi: 10.13686/j.cnki.dzyzy.2025.02.012

Citation:

ZHANG Hua, HAO Shu-ren, LIU Li-hong, DONG Wu-jun, CHENG Tong, HU Hui-juan. Influence of long-term operation of ground source heat pump on geothermal field in heat transfer area[J]. Geology and Resources, 2025, 34(2): 246-254. doi: 10.13686/j.cnki.dzyzy.2025.02.012

Influence of long-term operation of ground source heat pump on geothermal field in heat transfer area

1.
Jiangxi Survey, Design and Research Institute Co., Ltd., Nanchang 330095, China
2.
School of Civil and Architectural Engineering, East China University of Technology, Nanchang 330013, China

More Information

Corresponding author: HAO Shu-ren, 540668136@qq.com

Received Date: 02 December 2022

Revised Date: 17 January 2024

Publish Date: 25 April 2025

Abstract

Abstract

To study the influence of long-term operation of ground source heat pump (GSHP) on geothermal field in heat transfer area of hot-summer and cold-winter regions, taking a GSHP project in Nanchang City as an example, this paper analyzes the variation characteristics of geothermal field and heat-cold accumulation inside and outside the heat transfer area of the demonstration project over four years of operation. The project arranges seven temperature monitoring holes in the center and surrounding areas of the GSHP group for comprehensive monitoring of geothermal field changes in heat transfer area during the four-year operation. The analysis results show that the geothermal temperature inside and outside the heat transfer area changes periodically with the four-year operation of GSHP; The geothermal temperature increases with increasing depth vertically, and the variation range decreases gradually; Radially, geothermal temperature variations around the heat transfer area gradually decreases with increasing distance from hole group; The thermal influence radius of the hole group is 3-6 m during the four-year operation; The average temperature at the hole group boundary increases merely by 0.13 ℃, indicating insignificant heat accumulation after the four-year operation. These findings provide references for the site design of GSHP heat transfer holes.
- ground source heat pump (GSHP) /
- geothermal field /
- heat transfer area /
- heat accumulation /
- geothermal temperature monitor

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References

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