Evaporative roof cooling system

Details Evaporative roof cooling system Evaporative roof cooling system

1977-03-03

1977-12-27

Capossela, Ronald C.

Refrigeration

Processes

Treating an article

137 78, 200 6105, F25D 1702

Patent

active

040647064

ABSTRACT:
A control device for evaporative roof cooling systems in which a lack of moisture on a sample surface actuates a valve to spray water onto a roof. The lack of moisture opens the circuit between two spaced electrodes located on the sample surface, causing a control relay to activate a water spray system by supplying a voltage to one or more solenoid water valves.

REFERENCES:
patent: 2266321 (1941-12-01), Holder
patent: 2437156 (1948-03-01), Frick
patent: 2506936 (1950-05-01), Murray
patent: 2578981 (1951-12-01), Parker
patent: 2695976 (1954-11-01), Hasenkamp
patent: 2819726 (1958-01-01), Renoel
patent: 3297254 (1967-01-01), Coffman
patent: 3492449 (1970-01-01), Kenney
patent: 3584643 (1971-06-01), Burke
patent: 3823304 (1974-07-01), Siemianowski
patent: 3961753 (1976-06-01), Sears
patent: 3991939 (1976-11-01), MacLay

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