Solar operated shutter
A solar shutter system includes a pair of insulating panels pivotally mounted adjacent a glazed opening. Insulated and uninsulated counterbalance pressure tanks are mounted at opposite ends of one of the panels. The counterbalance tanks are interconnected by tubing and contain a partially vaporized fluid, such as freon. The uninsulated tank, exposed to the sunlight, heats up during the day forcing liquid freon from the uninsulated tank into the insulated tank to pivot the panels away from the opening. A solar collection tank beneath the glazed opening absorbs the radiant energy passing through the opening. During normal daylight hours the temperature within the uninsulated tank is greater than the temperatures in the insulated tank so that the panels remain open. When the sun sets, the temperature within the uninsulated tank drops more quickly than the temperature within the insulated tank so that liquid freon within the insulated tank flows back into the uninsulated tank shifting the balance of the panel to pivot the panel back down over the opening. Loss of heat from the solar collection tank is reduced.
- Assignee:
- EDB-83-049160
- Patent Number(s):
- US 4349011
- OSTI ID:
- 6595305
- Resource Relation:
- Patent File Date: Filed date 22 May 1981; Other Information: PAT-APPL-266250
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
SHUTTERS
POSITIONING
EVAPORATION
FLUID FLOW
FREONS
OPENINGS
SOLAR COLLECTORS
SOLAR RADIATION
SOLAR WATER HEATERS
TANKS
TEMPERATURE CONTROL
THERMAL INSULATION
TUBES
APPLIANCES
CONTAINERS
CONTROL
EQUIPMENT
HALOGENATED ALIPHATIC HYDROCARBONS
HEATERS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
PHASE TRANSFORMATIONS
RADIATIONS
SOLAR EQUIPMENT
STELLAR RADIATION
WATER HEATERS
140909* - Solar Thermal Utilization- Miscellaneous Solar Applications- (1980-)