Simulation and experimental validation of soil cool thermal charging and discharging process

Combined the advantages of ground-coupled heat pump and ice cool storage technology, and based on the integrated system of cool thermal storage in soil and ground-coupled heat pump, a mathematic model of cool thermal charging and discharging process in soil was established, which considers the cyclic phase change of the moist soil. Moreover, the numerical simulation and experimental validation were performed, the results indicate that the simulation and experiment are consistent with each other and the error is less than 10%. The model can be applied in the numerical calculation and theorical analysis of the cyclic soil cool charging and discharging performance, and will provide theory support for the application of the integrated system.