Research on Sustainable Shallow Geothermal Potential in Jinan Start-Up Area, China

Zhenkai Hao, Xiaofei Ji, Ningbo Li, Dongchen Bao, Yulin Liu and Ke Zhu ()
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Zhenkai Hao: Department of Thermal Engineering, Shandong Jianzhu University, Jinan 250101, China
Xiaofei Ji: Shandong Geological and Mineral Engineering Group Co., Ltd., Jinan 250013, China
Ningbo Li: Key Laboratory of Shallow Geothermal Energy, Ministry of Natural Resources of the People’s Republic of China, Beijing 100195, China
Dongchen Bao: Department of Thermal Engineering, Shandong Jianzhu University, Jinan 250101, China
Yulin Liu: Department of Thermal Engineering, Shandong Jianzhu University, Jinan 250101, China
Ke Zhu: Department of Thermal Engineering, Shandong Jianzhu University, Jinan 250101, China

Energies, 2023, vol. 16, issue 21, 1-16

Abstract: Shallow geothermal energy (SGE), as an important renewable energy, playing an important role in reducing carbon emissions. In order to efficiently and sustainably utilize SGE, field investigation and storage estimation are needed. In this study, the hydrogeological data obtained from the field exploration of Jinan Start-up Area were collected and compiled. By analyzing the geotechnical property data and thermal response test results, the information of geotechnical and thermal properties and underground temperature distribution characteristics were collected. Subsequently, the analytic hierarchy process (AHP) combined with the comprehensive index method (CIM) were used to classify the shallow geothermal potential of Jinan Start-up Area. The entire area was divided into a high-potential area, medium-potential area and general area, of which 92.2% was high-potential area. The preliminary results, combined with the parameters obtained from the testing, indicate that the SGE storage at a borehole depth of 120 m is estimated to be approximately 2.68 × 10 12 kJ·K −1 , while the heat exchanger power of the buried pipe at the same depth is calculated to be around 1.73 × 10 5 kW. Finally, suggestions are given for sustainable development and utilization of SGE in this area.

Keywords: shallow geothermal energy; ground source heat pump; suitability zoning; reserves calculation; analytic hierarchy process (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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