Monitoring and analysis of ground temperature field of a GSHP in Hangzhou

Calculates and analyses the monitoring data of a ground-source heat pump system(GSHP) in Hangzhou in the first year of operation. In the first year, the heat pump system discharges 680 GJ of heat to the ground and the thermal imbalance rate is 39%, with the heat accumulation phenomenon. Analyses the variation law of ground temperature at different locations and depths. After a complete phase of cooling-transition-heating-transition, the temperatures in the ground temperature monitoring holes at the center of four ground heat exchange holes rise 0.29 to 0.54 ℃, and the average temperature rises 0.33 ℃. Predicts the changes of ground temperature in the coming 10 and 20 years’ operation.