The Contribution Of Geothermal Heat Pumps In Net Zero Energy Buildings (NZEBs)

The Use of Ground Source Heat Pump to Achieve a Net Zero Energy Building

“…For the cases characterized by solely electric energy demand (GSHP and air source heat pump), the yearly electric energy demanded by all the systems of the building is calculated: it must be balanced by the yearly electric energy obtained by the photovoltaic modules (320 Wpeak per module); • For the case characterized by both electric energy and natural gas demand (boiler plus chiller), the yearly electric energy demanded by all the systems of the building must be balanced by the yearly electric energy obtained by the photovoltaic modules, while the yearly thermal energy related to the natural gas demanded by the boiler (3147 kWh for Palermo) is related to primary energy (3304 kWhpr), as suggested in [51] and [52], and this must be balanced by the annual electric energy obtained by the photovoltaic modules (note that, in the case of photovoltaic modules, this electric energy is equal to the corresponding primary energy).…”