Overview of solutions to improve efficiency of ground source heat pump system
Shallow geothermal energy, with applications ranging from road snow melting and deicing to building heating/cooling, primarily utilizes closed-loop vertical buried pipes for resource exploitation. These pipes function by exchanging heat with the subterranean zone under specific cooling or heating lo...
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Editorial Department of Petroleum Reservoir Evaluation and Development
2023-12-01
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| Series: | Youqicang pingjia yu kaifa |
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| Online Access: | https://red.magtech.org.cn/fileup/2095-1426/PDF/1704252588696-1711108499.pdf |
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| author | ZHANG Yuping, YANG Xiao, LIU Jun, LIU Boyang, TANG Fujiao, TAN Yiqiu |
| author_facet | ZHANG Yuping, YANG Xiao, LIU Jun, LIU Boyang, TANG Fujiao, TAN Yiqiu |
| author_sort | ZHANG Yuping, YANG Xiao, LIU Jun, LIU Boyang, TANG Fujiao, TAN Yiqiu |
| collection | DOAJ |
| description | Shallow geothermal energy, with applications ranging from road snow melting and deicing to building heating/cooling, primarily utilizes closed-loop vertical buried pipes for resource exploitation. These pipes function by exchanging heat with the subterranean zone under specific cooling or heating loads. Given the limited capacity of a single vertical ground heat exchanger to harness geothermal resources, arrays of these exchangers are more commonly employed to effectively tap into shallow geothermal resources. However, the underground temperature field can be significantly affected by the heat exchange process between the ground heat exchanger array and the surrounding soil. Improper design and operational conditions can lead to an imbalance in the underground temperature field, potentially resulting in energy deficiencies and the malfunctioning of Ground Source Heat Pump Systems（GSHPS）. Therefore, optimizing the design and operation scheme of ground heat exchanger array is the key to solve the imbalance of underground temperature field. The review summarizes the domestic and foreign research results, outlining various methods for energy storage and removal, incorporating auxiliary heating and cooling sources, and exploring relevant optimization techniques. The borehole array design optimization methods include primarily the distance between the pipe and the borehole layout. The energy storage/removal section mainly introduces the latest research results of borehole heat exchanger array by using external heat/cold sources such as solar energy and industrial waste heat. The auxiliary method mainly describes the latest researches on the application of resources like solar energy and heating towers. The operation control strategy mainly analyzes the operation control of the ground source heat pump system, including the peak cooling and heating load operation, intermittent operation, partition operation, system control strategy, etc. By thoroughly examining these optimization approaches and operational control strategies, the review provides a comprehensive analysis of the advantages and disadvantages of each scheme. This detailed evaluation serves as a valuable reference for improving the energy efficiency of GSHPS, ensuring sustainable and effective utilization of shallow geothermal resources. |
| format | Article |
| id | doaj-art-c83cebf19ec74985b7a479d52d7e2d69 |
| institution | OA Journals |
| issn | 2095-1426 |
| language | zho |
| publishDate | 2023-12-01 |
| publisher | Editorial Department of Petroleum Reservoir Evaluation and Development |
| record_format | Article |
| series | Youqicang pingjia yu kaifa |
| spelling | doaj-art-c83cebf19ec74985b7a479d52d7e2d692025-08-20T02:03:05ZzhoEditorial Department of Petroleum Reservoir Evaluation and DevelopmentYouqicang pingjia yu kaifa2095-14262023-12-0113672674010.13809/j.cnki.cn32-1825/te.2023.06.003Overview of solutions to improve efficiency of ground source heat pump systemZHANG Yuping, YANG Xiao, LIU Jun, LIU Boyang, TANG Fujiao, TAN Yiqiu01. Key Laboratory of Coal Resources Exploration and Comprehensive Utilization, Ministry of Natural Resources, Shaanxi Coal Geology Group Co., Ltd., Xi’an, Shaanxi 710026, China;2. School of Transportation Science and Engineering, Haerbin Institute of Technology, Harbin, Heilongjiang 150006，China;3. Shaanxi Zhongmei New Energy Co. Ltd., Xi’an, Shaanxi 710054, ChinaShallow geothermal energy, with applications ranging from road snow melting and deicing to building heating/cooling, primarily utilizes closed-loop vertical buried pipes for resource exploitation. These pipes function by exchanging heat with the subterranean zone under specific cooling or heating loads. Given the limited capacity of a single vertical ground heat exchanger to harness geothermal resources, arrays of these exchangers are more commonly employed to effectively tap into shallow geothermal resources. However, the underground temperature field can be significantly affected by the heat exchange process between the ground heat exchanger array and the surrounding soil. Improper design and operational conditions can lead to an imbalance in the underground temperature field, potentially resulting in energy deficiencies and the malfunctioning of Ground Source Heat Pump Systems（GSHPS）. Therefore, optimizing the design and operation scheme of ground heat exchanger array is the key to solve the imbalance of underground temperature field. The review summarizes the domestic and foreign research results, outlining various methods for energy storage and removal, incorporating auxiliary heating and cooling sources, and exploring relevant optimization techniques. The borehole array design optimization methods include primarily the distance between the pipe and the borehole layout. The energy storage/removal section mainly introduces the latest research results of borehole heat exchanger array by using external heat/cold sources such as solar energy and industrial waste heat. The auxiliary method mainly describes the latest researches on the application of resources like solar energy and heating towers. The operation control strategy mainly analyzes the operation control of the ground source heat pump system, including the peak cooling and heating load operation, intermittent operation, partition operation, system control strategy, etc. By thoroughly examining these optimization approaches and operational control strategies, the review provides a comprehensive analysis of the advantages and disadvantages of each scheme. This detailed evaluation serves as a valuable reference for improving the energy efficiency of GSHPS, ensuring sustainable and effective utilization of shallow geothermal resources.https://red.magtech.org.cn/fileup/2095-1426/PDF/1704252588696-1711108499.pdf|geothermal energy|ground heat exchanger array|underground temperature field|energy storage|auxiliary heating/cooling source|control strategy |
| spellingShingle | ZHANG Yuping, YANG Xiao, LIU Jun, LIU Boyang, TANG Fujiao, TAN Yiqiu Overview of solutions to improve efficiency of ground source heat pump system Youqicang pingjia yu kaifa |geothermal energy|ground heat exchanger array|underground temperature field|energy storage|auxiliary heating/cooling source|control strategy |
| title | Overview of solutions to improve efficiency of ground source heat pump system |
| title_full | Overview of solutions to improve efficiency of ground source heat pump system |
| title_fullStr | Overview of solutions to improve efficiency of ground source heat pump system |
| title_full_unstemmed | Overview of solutions to improve efficiency of ground source heat pump system |
| title_short | Overview of solutions to improve efficiency of ground source heat pump system |
| title_sort | overview of solutions to improve efficiency of ground source heat pump system |
| topic | |geothermal energy|ground heat exchanger array|underground temperature field|energy storage|auxiliary heating/cooling source|control strategy |
| url | https://red.magtech.org.cn/fileup/2095-1426/PDF/1704252588696-1711108499.pdf |
| work_keys_str_mv | AT zhangyupingyangxiaoliujunliuboyangtangfujiaotanyiqiu overviewofsolutionstoimproveefficiencyofgroundsourceheatpumpsystem |