Operation modes of solar-assisted ground-source heat pump system in transition season

Compares the efficiency of heat utilization under two operation modes of timing and hourly thermal storage for the thermal storage subsystem of solar-assisted ground-source heat pump (SAGSHP) system in transition season. Provides the methods to determine the main equipment parameters for the two operation modes. Based on the simulation model built on TRNSYS platform, simulates the thermal storage status of the thermal storage subsystem with different solar collectors. According to the simulation results, evaluates the thermal storage efficiency of the two operation modes.