| 摘要 |
PURPOSE:To lower the power cost of an air-conditioner by eliminating a pump for a radiator for air-heating, by designing valves to be changeable to change the direction of flow so as to make up three independent circuits by a collector and a heat-accumulating tank, a collector and a radiator for air-heating, and a heat-accumulating tank and a radiator for air-heating, respectively. CONSTITUTION:During a solar heat collecting and heat-accumulating operation, valves V1, V3, and V4 are opened while a valve V2 is closed, and a heat collecting part of a collector 1 functions as an evaporator for refrigerant while the heat exchanger in a heat-accumulating tank 2 functions as a condensor respectively, by the operation of a heat collecting pump 3. The heat being collected by the collector 1 is accumulated in the heat-accumulating tank 2. During a heat-collecting and air-heating operation, the valves V1, V2, and V4 are opened while the valve V3 is closed, and a radiator 5 to radiate heat for air-heating functions as a condense-radiator for refrigerant so that solar heat can be utilized directly for air-heating. During night and when solar heat is not accumulated, the valves V2 and V3 are opened while the valves V1 and V4 are closed, and the heat exchanger of a heat-accumulating tank 2 functions as an evaporator for refrigerant while the radiator 5 for air-heating functions as a condense-radiator, and the heat being accumulated in the heat-accumulating tank 2 during daytime can be utilized for air-heating. |
