| 摘要 |
PURPOSE:To enable to naturally circulate heat medium without external power by composing a sealed system circuit of a solar heat collector, and a heater added to a hot water storage tank, and sealing heat medium absorbed at a low temperature to a solid absorber and separated at a high temperature in the circuit, thereby installing the tank at the position lower than the collector. CONSTITUTION:Since an absorber 5 sealed in a flow passage of a solar heat collector 1 has a property for absorbing liquid heat medium, the medium is absorbed when the absorber 5 is not heated by solar heat. As the absorber 5 is gradually heated to a high temperature, the absorbed medium is heated, the medium is eventually evaporated, and separated from the absorber 5, thereby forming a high temperature high pressure atmosphere. The medium naturally circulates reversibly between a heater 12 and a solar heat collector due to the pressure difference produced in the collector 1 and the heater 12, and a hot water storage tank 5 can be installed at the position lower than the collector 1 without power source.
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