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| Study on suitability zoning of shallow geothermal energy development in the main urban zone of Xuzhou City |
| JING Jiajun, WANG Hongpei, GUAN Zhen, SHAN Yuyang |
| The fifth Geological Brigade of Jiangsu Geology and Mineral Exploration Bureau, Xuzhou 221004, China |
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Abstract Shallow geothermal energy is increasingly used in heating and cooling for urban buildings due to its characteristics of wide distribution, large reserves, high efficiency and no pollution. But there are many factors restricting the development and utilization of shallow geothermal energy, which mainly include geology, hydrogeology, thermophysical property of rocks and soils as well as construction conditions. Now, the development of shallow geothermal energy in Xuzhou is disordered, which causes extreme waste of resources and serious geological environment problems. The buried tube ground-source heat pump is the research emphasis of this paper. Through the collection of rock and soil samples and on-site thermal response test, the authors found out that under the premise of only considering the thermophysical conditions, all areas are suitable to develop and utilize buried tube ground-source heat pump. So, the major restricting factor of shallow geothermal energy development is the drilling cost. According to the drilling cost, the authors made the regional suitability zoning for buried tube ground-source heat pump, and the study area is divided into the favorable zone, suitable zone and unsuitable zone.
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Received: 12 January 2018
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2018, Vol. 5 
