Journal
ENERGY AND BUILDINGS
Volume 229, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.enbuild.2020.110479
Keywords
SGE; GSHP; Earth temperature; Building heating and cooling; COPs
Funding
- National Nature Science Foundation of China (NSFC) [41877213]
- The Pearl River Talent Recruitment Program in 2019 [2019CX01G338]
- Shantou University [NTF19024-2019]
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This paper summarized the shallow geothermal resources within a depth of 200 m in China. This geothermal resource is divided into five regions based on the geological structures, geomorphology, geology, and hydrogeology. The recoverable amount of shallow geothermal energy (SGE) is equivalent to 7 x 10(12) kg of standard coal in a survey area of 1.69 x 10(5) km(2), 60% of which is distributed in the mid-eastern region of China. SGE is mainly used for building heating and cooling via ground source heat pump (GSHP) technology since 1990s. The coefficient of performance (COPs) of the GSHP system exhibits large regional differences, and the energy utilizing efficiencies of GSHP systems are not high. The utilization rate of SGE is still low compared with those of other forms of renewable energy. Some measures, including a standardized and simplified management system, a feasible evaluation and utilization plan, modified technology and standards, an intelligence environmental impact assessment, and intelligence monitoring, can be considered to enhance the utilization efficiency of SGE. (C) 2020 Elsevier B.V. All rights reserved.
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