Performance analysis on a large scale borehole ground source heat pump in Tianjin cultural centre

International Conference on Energy Engineering and Environmental Protection 2017

能源学;生态环境科学

Yin, Baoquan^1 ; Wu, Xiaoting^1

Tianjin Architecture Design Institute, Tianjin Engineering Center of Green Building Mechanical and Electrical Technology, Tianjin

300074, China^1

关键词: Geothermal sources;    Ground coupled heat pump;    Heat-supply networks;    Heating and cooling;    Performance analysis;    Soil thermal inertia;    Temperature constant;    Transitional season;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/121/5/052071/pdf
DOI  :  10.1088/1755-1315/121/5/052071

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

In this paper, the temperature distribution of the geothermal field for the vertical borehole ground-coupled heat pump was tested and analysed. Besides the borehole ground-coupled heat pump, the system composed of the ice storage, heat supply network and cooling tower. According to the operation data for nearly three years, the temperature constant zone is in the ground depth of 40m -120m with a temperature gradient of about 3.0°C/100m. The temperature of the soil dropped significantly in the heating season, increased significantly in the cooling season, and reinstated in the transitional season. With the energy balance design of the heating and cooling and the existence of the soil thermal inertia, the soil temperature stayed in a relative stable range and the ground source heat pump system was operated with a relative high efficiency. The geothermal source heat pump was shown to be applicable for large scale utilization.