Stoves and furnaces – Heaters – Surface
Patent
1976-01-19
1978-03-28
Sprague, Kenneth W.
Stoves and furnaces
Heaters
Surface
237 1A, 165105, F24J 302
Patent
active
040809579
ABSTRACT:
The invention provides a method for heating water by solar radiation using a reflux condenser system in which a heat transfer liquid is boiled by solar radiation and the vapor used to heat the water in a heat exchanger. The solar panel itself is highly efficient in operation and comprises a solar plate which incorporates a number of tubes containing the heat transfer liquid, these elements being located within an evacuated enclosure. Vapor from the boiling liquid passes up these tubes into a jacket surrounding a pipe through which the water to be heated is passed; liquid condensing within the jacket passes back to the tubes in the solar plate under gravity. The system incorporating the tubes and the jacket is maintained at a low gas pressure so that boiling of the heat transfer liquid takes place whenever there is a temperature difference between the panel and the heat exchanger.
REFERENCES:
patent: 1250260 (1917-12-01), Wilcox
patent: 3227153 (1966-01-01), Godel et al.
patent: 3390672 (1968-07-01), Snelling
patent: 3637007 (1972-01-01), Shlosinger
patent: 3799144 (1974-03-01), Ramsey et al.
patent: 3875926 (1975-04-01), Frank
patent: 3916871 (1975-11-01), Estes et al.
patent: 3923038 (1975-12-01), Cutchaw
patent: 3957029 (1976-05-01), Nozik
Sprague Kenneth W.
Yeung James C.
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