GEOTHERMAL HEAT UTILIZATION SYSTEM AND GEOTHERMAL HEAT UTILIZATION METHOD

摘要

This geothermal heat utilization system (10) is provided with: a pumping well (20) and a water injection well (30); a pipe (13) both ends of which are immersed in storage water which is in the pumping well (20) and the water injection well (30), so as to connect the pumping well (20) and the water injection well (30); a pump (21) and a pump (31) which are respectively provided in the pumping well (20) and in the water injection well (30), and pump up the storage water through the pipe (13); a valve (25) and a valve (35) which are respectively provided on a pressurizing side of the pump (31) in the water injection well (30) and on a pressurizing side of the pump (21) in the pumping well (20); and a heat exchanger (14) for exchanging heat with the pipe (13).