| 摘要 |
PURPOSE:To prevent the water temperature of a sucking well from being affected by the water temperature of a returning well by a method wherein the suction as well as discharging pipes of a heat exchanger at the heat source side are provided in the sucking and returning wells respectively and the upstream side of the flowing direction of the underground water is utilized as the sucking well while the downstream side thereof is utilized as the returning well. CONSTITUTION:The load-side heat exchanger 7 air-conditions a room by a method wherein water supplied from a cistern 8 is circulated through a fan-coil unit 11 by a circulating pump 9 bia a water pipeline 10 to absorb the heat in the room. This heat is thrown away into the returning well 16 by the heat- source side heat exchanger 3 through the underground water bia the sucking well 12, the suction pipe 13, a pumping pump 14 and the discharging pipe 15. In this case, returning of returning water, received the heat by the heat pump, into the sucking well 16 is avoided as much as possible, the water temperature of the sucking well 12 is prevented from being affected by the same of the returning water and, thereby, keeping the water temperature of the sucking well 12 in constant, by a method wherein the upstream side of the flowing direction of the underground water is utilized as the sucking well 12 while the downstream side thereof is utilized as the returning well 16. |
