Long-term performance of BHE (borehole heat exchanger) fields with negligible groundwater movement

► The long-term performance of BHE fields without groundwater movement is studied. ► A single BHE does not need any compensation between winter and summer loads. ► One line and two staggered lines of infinite BHEs need a partial load compensation. ► A square field of infinite BHEs needs an almost complete heat load compensation. ► Pairs “distance - heat load” that grant long-term performance of BHE fields are given.