Field test of a groundwater source heat pump project with pumping and recharging in the same well in Beijing

Compares the pumping and recharging well (PRW) with the standing column well (SCW). Presents the field test data around a year of a groundwater source heat pump with pumping and recharging in the same well (GSHPPRSW) project in Beijing, including the inlet and outlet groundwater temperature, groundwater flow rate and temperature of observation wells. The research indicates that the determination of groundwater flow rate is the key to energy saving of GSHPPRSW. Delimits slow-response heat breakthrough and fast-response heat breakthrough and states that the slow-response heat breakthrough is not notable in the operation of GSHPPRSW and attentions should be paid to the fast-response heat breakthrough. For the full-year-operation PRW, seasonal thermal energy storage plays an important role in the heat source of the heat pump.