[S27-P] Poster

[S27-P-01] Evaluation of geothermal energy potential for heating/cooling of the Xi'an Jiaotong University new campus in Xixian, Shaanxi, China

^○Tingting Ke¹, Yilei Xu¹, Shaopeng Huang^1,2, Xiaoyin Tang¹, Wentao Duan¹ (1.Institute of Global Environmental Change, University of Xi'an Jiaotong University, Xi'an, Shaanxi, China, 2.Department of Earth and Environmental Sciences, University of Michigan, Ann Arbor, Michigan, USA)

The Xi'an Jiaotong University (XJTU) is an elite research university in China. It has been tasked by the Shaanxi Provincial Government to develop its new campus as a technological innovation hub in western China. Socioeconomically, the XJTU new campus is located in the Xixian District, a transmission zone between Xi'an and Xianyang designated for ecological urbanization development. Geologically, it situates on the top of the Xi'an Depression of the Guanzhong Basin where geothermal resource is abundant and has been utilized for thousands of years. More than 150 geothermal wells mostly of depths between 1000 to 3000 m are currently in production in the Xi'an –Xianyang area. A preliminary energy demand analysis of heating/cooling for the new campus based on space functionalities shows a maximum load of 179 MW during the 4-month winter heating season from mid-November to mid-March, and 189 MW during the 2-month summer cooling time from July to August. This ongoing project is to evaluate the feasibility for geothermal resource to meet the heating/cooling demand. Based on the data available in the literature, a geological model of the Xi'an Depression has been established. Five Cenozoic formations have been identified as geothermal water bearing strata within the depth down to 5 km. Although the new campus occupies an area of about 3.12 square km, we use a reservoir area of 5 square km in our resource assessment because extraction of underground geothermal fluid does not have to be restricted within the campus boundary. Geothermal resource of each reservoir stratum is calculated in terms of formation thickness, porosity, and temperature data. The thermal energy reserve for the XJTU new campus is estimated to be 14900 billion Kcal. In search for an optimal and sustainable geothermal energy application plan, we are in the process of simulating various production schemes. Results will be presented at this conference.