22 May 2008
The Ground source heat pump (GSHP) system of the water-to-refrigerant type is installed in a building to analyze in the technical and economical aspects. First of all, the heating and cooling load is evaluated by a simulation program (Visual DOE-2) and the peak load is calculated. In-situ thermal conductivity is measured and the ground heat exchanger is
designed. We make a testing device for in-situ thermal conductivity measurement and thermal conductivity is evaluated by the solution of the Line Source problem. Finally, the ground heat exchanger is designed by commercial software (GLD). The required borehole length of ground heat exchanger is 3956 m and the number of boreholes is 24 (165 m depth borehole).