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U.S. Department of Energy
Office of Scientific and Technical Information

Temperature control in solar-to-thermal energy converters

Patent ·
OSTI ID:6532448
A solar-to-thermal energy converter is disclosed 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. A temperature actuated heat loss enhancer is featured 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.
Assignee:
Daystar Corp.
Patent Number(s):
US 4102325
OSTI ID:
6532448
Country of Publication:
United States
Language:
English

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