Author/Authors :
Bandos، نويسنده , , Tatyana V. and Montero، نويسنده , , ءlvaro and Fernلndez، نويسنده , , Esther and Santander، نويسنده , , Juan Luis G. and Isidro، نويسنده , , José Marيa and Pérez-Vicente، نويسنده , , Jezabel and Cَrdoba، نويسنده , , Pedro J. Fernلndez de and Urchueguيa، نويسنده , , Javier F.، نويسنده ,
Abstract :
A solution to the three-dimensional finite line-source (FLS) model for borehole heat exchangers (BHEs) that takes into account the prevailing geothermal gradient and allows arbitrary ground surface temperature changes is presented. Analytical expressions for the average ground temperature are derived by integrating the exact solution over the line-source depth. A self-consistent procedure to evaluate the in situ thermal response test (TRT) data is outlined. The effective thermal conductivity and the effective borehole thermal resistance can be determined by fitting the TRT data to the time-series expansion obtained for the average temperature.
Keywords :
Geothermal , Borehole heat exchangers , heat transfer , Thermal response test , Ground-coupled heat pumps
