Abstract

BoFiSi (Bore Field Simulator) is a C++ program that can simulate the thermal response any field of Borehole Heat Exchangers (BHEs) having the same length, fed in parallel with an equal inlet fluid temperature, and buried at the same depth in a homogeneous ground. It is based on the semi-analytical model illustrated in arXiv:2412.07557 [physics.app-ph], which is a conceptually simpler and equally precise alternative to the excellent model proposed by Massimo Cimmino (Int J Heat Mass Tran 91, 2015). The program computes both the g-function of a bore field, namely the time evolution of the mean temperature of the external surface of the BHEs, and the fluid-to-ground function (ftg-function), namely the time evolution of the mean temperature of the fluid inside the BHEs.