| 摘要 |
A heat exchanger is provided in a void 22 between the lowermost floor 12 of a building 24 and the ground 20 for heat exchange between the interior 28 and exterior 29 of the building 24. The first heat exchanger may comprise refrigerant-filled legs 38 within the void 22 and may be connected to 'C'-shaped, metal radiating members 14, which may form the floor supports. The heat exchanger 38 may be embedded in a material with high thermal conductivity 46 within a recess 44 of the radiating member 14. A second heat exchanger 32, a compressor 34 and expansion device 36 may be provided to form a refrigeration circuit 26 operable to either heat or cool the interior 28. A second circuit 48 may be provided for heat recovery or storage, e.g. to heat water 50. Legs 60 may extend into the ground 20 for geothermal heat exchange and may form part of the refrigerant circuit (figure 5), or a separate circuit. A wind-blown cowl 70, or fan or blower may be provided within the void 22 to drive a turbine to draw air through duct 66 to ventilate the void 22 (figure 7) and the expansion device 36 may include a turbine to drive a generator (72, figure 7) to provide electricity. |
