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Analysis of Influencing Factors and Sensitivity Analysis of the Design Length of Buried Pipe Ground-Source Heat Pump
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Weiqiang Bi1, 2, Zongwei Han1, 2, Xueping Zhang1, 2, Hongzhi Zhang1, 2, Lingyan Yang3
Journal of Refrigeration | 2025, 46(2) : 120 - 128
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Journal of Refrigeration | 2025, 46(2): 120-128
Analysis of Influencing Factors and Sensitivity Analysis of the Design Length of Buried Pipe Ground-Source Heat Pump
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Weiqiang Bi1, 2, Zongwei Han1, 2, Xueping Zhang1, 2, Hongzhi Zhang1, 2, Lingyan Yang3
Affiliations
  • 1.School of Metallurgy, Northeastern University, Shenyang, 110819, China
  • 2.Liaoning Engineering Research Center of Process Industry Energy Saving and Low-carbon Technologies, Shenyang, 110819, China
  • 3.China Academy of Building Research, Beijing, 100013, China
Published: 2025-04-16 doi: 10.12465/j.issn.0253-4339.2025.02.120
Outline
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To address the issue of unreasonable buried pipe length design in ground-source heat pump projects, a three-dimensional dynamic simulation platform was developed. The reasonableness of the buried pipe length was evaluated by comparing the simulated outlet temperature with the designed outlet temperature based on specifications. Using a building in Beijing as a case study, the effects of soil thermal properties and borehole-related parameters on the design error in buried pipe length were analyzed. A sensitivity analysis further examined the impact of these factors. Results indicate that the relative error in buried pipe design length increases with rising soil thermal conductivity, soil volumetric heat capacity, borehole depth, and borehole spacing. Relative error ranges were 10.7%-27.3%, 8.0%-23.8%, 7.3%-12.5%, and 12.5%-17.4% for the respective factors. Sensitivity analysis revealed soil thermal conductivity as the most significant factor influencing pipe length, with a quantitative index of 0.909. Other influential factors, in descending order, were soil volumetric heat capacity, borehole spacing, number of borehole columns, and borehole depth.

Weiqiang Bi, Zongwei Han, Xueping Zhang, Hongzhi Zhang, Lingyan Yang. Analysis of Influencing Factors and Sensitivity Analysis of the Design Length of Buried Pipe Ground-Source Heat Pump[J]. Journal of Refrigeration, 2025 , 46 (2) : 120 -128 . DOI: 10.12465/j.issn.0253-4339.2025.02.120
Funding
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  • National Natural Science Foundation of China(521706180)
Appendix
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Year 2025 volume 46 Issue 2
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107
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Article Info
doi: 10.12465/j.issn.0253-4339.2025.02.120
  • Receive Date：2023-12-11
  • Online Date：2026-03-13
  • Published：2025-04-16
Article Data
Affiliations
History
  • Received：2023-12-11
  • Revised：2024-01-15
  • Accepted：2024-02-26
Funding
National Natural Science Foundation of China(521706180)
Affiliations
    1.School of Metallurgy, Northeastern University, Shenyang, 110819, China
    2.Liaoning Engineering Research Center of Process Industry Energy Saving and Low-carbon Technologies, Shenyang, 110819, China
    3.China Academy of Building Research, Beijing, 100013, China

Corresponding:

Han Zongwei, male, professor, Ph. D., School of Metallurgy, Northeastern University, 86-15040168696, E-mail: . Research fields: refrigeration and heat pump technology, utilization of renewable energy.
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表12种不同金属材料的力学参数
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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