| 摘要 |
Solar-to-thermal energy converter comprising an insulated frame, a solar energy absorber mounted in the frame, a fluid flow heat exchange means thermally coupled to the absorber to carry away as thermal energy the absorbed solar energy, and a window transmissive to solar energy mounted in the frame above the absorber, featuring a temperature actuated heat loss enhancer comprising a fluid flow heat pickup means thermally coupled to the absorber, an exterior heat rejector element, a fluid flow heat rejector means thermally coupled to the heat rejector element, and a thermally actuated valve connected between said fluid flow pickup and rejector means to form a fluid flow circuit separate from the fluid flow heat exchange means and powered by the heat-produced differential buoyancy forces of the fluid therein when the valve is open.
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