Refrigeration – Diverse systems – e.g. – ice and mechanical – Primary and secondary dependent circuits
Patent
1977-07-22
1978-12-12
Capossela, Ronald C.
Refrigeration
Diverse systems, e.g., ice and mechanical
Primary and secondary dependent circuits
62 59, 62434, 62437, 165104S, F24C 1516
Patent
active
041290143
ABSTRACT:
A "coldness-storage" unit for use in a refrigeration storage and cooling tank system for nighttime coolant storage while providing for subsequent daytime cooling. The "coldness-storage" unit has a closed tank which includes a plurality of cans containing a liquid material which freezes at a temperature below room temperature. The outer surface of the cans are coated with a wicking surface and the tank includes a condensable liquid such as butane, which vaporizes to fill the unoccupied space in the tank with butane vapor. The ends of the wick covered cans touch the butane so that the butane wets the wicks. A refrigerator/compressoris operated to cool condensation coils in the tank. The butane vapors in the unoccupied space condense on the condensation coils giving off heat to the refrigerator/compressor coils which lowers the vapor pressure within the tank. The butane evaporates from the wetted wicking surfaces of the cans in response to lowered vapor pressure, giving off additional vapors which condense on the condensation coils. The evaporating liquid cools the cans below freezing, thereby freezing the liquid in the cans. Pipes in the bottom of the tank within the liquid butane permit fluid circulation for carrying a coolant to a heat exchanger and returning hot fluid from the heat exchanger. The returning hot fluid causes boiling of the liquid butane, vaporizing the liquid butane. Concurrent condensation of butane vapors on the cans causes the frozen liquid in the cans to melt. As a result, a cool pool of liquid butane is maintained throughout the day to provide cooling during the day. During nighttime, the refrigeration unit is operated to refreeze the liquid in the cans as set forth above.
REFERENCES:
patent: 2142856 (1939-01-01), Lieb et al.
patent: 2160389 (1939-05-01), Palmer
patent: 2990693 (1961-07-01), Houplain
patent: 3653221 (1972-04-01), Angus
patent: 3766752 (1973-10-01), Laing
patent: 4010731 (1977-03-01), Harrison
patent: 4044568 (1977-08-01), Hagen
patent: 4064931 (1977-12-01), Laing
Capossela Ronald C.
Crane Melvin L.
Schneider Philip
Sciascia R. S.
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