Heat transfer system particularly applicable to solar heating in

Details Heat transfer system particularly applicable to solar heating in Heat transfer system particularly applicable to solar heating in

1975-11-24

1977-12-06

Davis, Jr., Albert W.

Stoves and furnaces

Heaters

Surface

165105, 237 1A, 237 67, F24J 302

Patent

active

040611310

ABSTRACT:
The present invention relates to a heat transfer system particularly applicable to solar heating installations and consisting of an evaporator located near the heat source which may be a solar heat collector panel and a condenser that is located at an elevation lower than that of the evaporator and which may function to heat hot water for storage. The source heat is transferred to a volatile fluid within the evaporator that absorbs the heat with an increase in temperaure and a change of state from liquid to vapor. The vapor is conveyed to the condenser wherein the fluid liberates its latent heat while changing from vapor to liquid phase. The condensed liquid drains from the condenser to a trap which may be used, if desired, to regulate the flow of liquid through a check valve and further piping to a transfer tank located above the evaporator. The fluid in the transfer tank is maintained at a lower temperature than that of the evaporator as a result of being insulated from the heat source. A dual level control system is employed within the trasfer tank such that as the level of liquid therein rises above an upper limit the drain valve is opened permitting transfer of liquid to the evaporator. When the liquid level drops below the lower limit the drain valve is closed, at which time the cycle begins anew. The system is hermetically closed containing only the liquid and vapor of the selected volatile fluid.

REFERENCES:
patent: 796283 (1905-08-01), Barber
patent: 2068549 (1937-01-01), Knight
patent: 2195293 (1940-03-01), Andersson
patent: 2210511 (1940-08-01), Taylor
patent: 2210607 (1940-08-01), Taylor
patent: 2226797 (1940-12-01), Andersson
patent: 3390672 (1968-07-01), Snelling

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