As shown in Fig. 2, the geothermal storage tank must be installed 3 m above the ground to acquire a high-temperature heat source and pressure difference needed to feed the high steam tempera- ture geothermal water through the CPVC4120 pipe to the machine equipment room of the building for heat energy exchange with the geothermal exchange system. Limited daily peak usage and the confined site boundaries have limited the dimensions of the geothermal storage tank. If geothermal water exceeds the capacity of the tank, then the geothermal water, which is as high as 100 ◦C must be drained from the tank. The daily drainage of the geothermal water is approximately 200 M3.