Drainable solar collector unit

Details Drainable solar collector unit Drainable solar collector unit

1981-07-31

1983-08-23

Scott, Samuel

Stoves and furnaces

Tool having fluid fuel burner

Curling iron

126443, F24J 302

Patent

active

043998089

ABSTRACT:
The disclosure relates to an improved venting arrangement for a solar energy collecting device of the type wherein a double walled tubular-type structure is employed with the outer wall of the inner tube carrying a solar absorbent coating and the interior of the inner tube being periodically filled with a heat transfer fluid. To prevent such heat transfer fluid from completely filling the inner tube, and thus establishing an undesirable siphoning action, and to concurrently permit the unrestricted venting of air out of the inner tube during filling and into the inner tube upon drainage of the fluid therefrom, this disclosure provides a vent tube extending into the upper regions of the inner tube and having a floatable valve structure mounted on its upper end and arranged so as to effect a seating of the valve and the closing of the vent tube when the fluid level in the inner tube reaches a desired height. Conversely, upon drainage of the inner tube, the valve will open to freely permit air flow into the tube and prevent the trapping of fluid therein.

REFERENCES:
patent: 1345758 (1920-07-01), Folsom
patent: 2167576 (1939-07-01), Kiser
patent: 3913835 (1975-10-01), O'Brien
patent: 3915147 (1975-10-01), Rineer
patent: 4232655 (1980-11-01), Frissora et al.
patent: 4346731 (1982-08-01), Sigworth, Jr.

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