A New Type in TRNSYS 18 for Simulation of Borehole Heat Exchangers Affected by Different Groundwater Flow Velocities

Heating ventilating air-conditioning (HVAC) systems have been increasingly widespread in Italy: they can exploit renewable energies, are energy efficient systems, do not directly consume fossil fuels, and the post-pandemic era, also subject to incentive processes by Italian government. In South Tyrol, harsh climates both winter summer seasons, ground-source heat pump (GSHP) be an excellent solution for air conditioning of buildings. Unfortunately, too often, design HVAC with borehole exchangers (BHEs) is adequate, therefore, innovative expeditious numerical proposed. A new element (named Type285), written Fortran code, was developed TRNSYS 18 able implement main features BHEs surrounding aquifer. Type285 compared models present literature (using hydrogeological software such as MODFLOW) validated experimental data. The demonstration exchanged increase between BHE subsoil due groundwater flow velocity carried out evaluated. choice simulate using a fast advantageous system design.