Solar collector automatic freeze protection system

Details Solar collector automatic freeze protection system Solar collector automatic freeze protection system

1976-05-10

1977-08-30

Sprague, Kenneth W.

Stoves and furnaces

Heaters

Surface

137 59, 126270, F24J 302

Patent

active

040447545

ABSTRACT:
An automatic freeze protection system for solar energy collector apparatus. The apparatus includes a solar collector for circulating water or another fluid to be heated by the sun. Sensor means are provided within the collector to monitor the temperature of the water, and whenever it approaches the freezing point, the sensor will automatically actuate a valve means to rapidly drain the water from the collector. When the temperature within the collector thereafter rises to a predetermined safe level, the sensor means will again automatically actuate the valve means to refill the collector with fresh water to be heated. The system provided thus avoids the need for anti-freeze or other freeze protection materials suggested by the prior art as well as isolated water loops, heat exchangers and other expensive safety equipment necessitated thereby.

REFERENCES:
patent: 2469496 (1949-05-01), Christenson
patent: 3970069 (1976-07-01), Pickett
patent: 3986489 (1976-10-01), Schlesinger
patent: 3989032 (1976-11-01), Harrison

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