Ground source heat pump (GSHP) systems are becoming widespread due to their high energy efficiency both in heating and cooling mode. In this study I try to integrate GSHP and gas turbine (GT). The energy of GT exhaust gases can be used as an initial power of GSHP systems specially during cold seasons. In this paper methods are given to store the energy of GT exhausted gases in ground during the warm seasons and reuse it in cold seasons for heating purpose of the building. In order to store this energy in ground, spiral GHEs are used and analyzed. After storing partial energy of GT exhaust gases in ground in summer, it can be reused during cold seasons for heating purpose of surrounding buildings through GSHP systems or directly. Furthermore, in this study, thermal behavior of nine spiral GHEs is investigated computationally and experimentally in heating mode of GSHP system. Storage processes of GT exhausted gases energy are simulated by COMSOL environment and the effects of the energy storage process on thermal performance of nine spiral GHEs are analyzed computationally. Since gases are exited GT in high temperature, the temperature of ground around spiral GHEs during storage process is highly increased. Simulation results of GSHP systems in this study show that the performance of GSHP is well increased. The methods that are given in this paper can reduce the energy cost of buildings and are also increase the thermal performance of GSHP systems.

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