| G functions and ln (T/Ts) data pairs, for accurate simulation have to be calculated for each specific heat exchanger design. This can be done using some comercial ground loop heat exchanger design tool ( most appropriate, I think Grpond Loop Heat Exchanger software GLHE Pro). Some reference data set containing examples input data for 1x2, 4x4, and 8x8 configurations for both standart and thermally enhanced grout, have been provided from E plus staff which can be found at zip library. good luck Dashamir |