Gas and liquid contact apparatus – With external supply or removal of heat – Heat exchange means at or downstream of contact zone
Patent
1981-04-16
1983-02-08
Chiesa, Richard L.
Gas and liquid contact apparatus
With external supply or removal of heat
Heat exchange means at or downstream of contact zone
165 60, 165166, 165DIG1, 261110, 261112, 261DIG11, B01F 304
Patent
active
043728979
ABSTRACT:
Heat transfer and exchange apparatus having a plurality of double-sheeted wettable flow-through pockets suspended from an overhead liquid supplying support in spaced apart and essentially parallel relationship. A downwardly flowing liquid curtain exists within the innerspace of each of the pockets, the liquid curtain bonding the wettable side-forming sheets of each pocket together through cohesive, adhesive and pressure forces. Flow characteristics within the liquid curtain automatically adjust to create a condition of zero pressure differential across each of the wettable sheets which form a pocket pair so that pressure inside and outside the pocket are equal at all unconfined points over the surfaces of the sheets irrespective of flow rate, temperature viscosity, density or composition of the liquid curtain.
The structure includes a compact assembly of interlocking generally wedge-shaped fluid distribution headers and collection manifolds that function as hangers for the pockets and spacers to keep them apart, thus defining relatively wide open spaces for the crossflow of air therebetween. When secondary coolant is flowing down the outside surfaces of each pocket in heat exchange relation with the liquid curtain within the pocket, the heat exchanger is operated as an evaporative cooler. When secondary coolant is not flowing down the outside surfaces of each pocket, the exchanger is operated as an air-liquid indirect sensible heat exchanger.
REFERENCES:
patent: 1847845 (1932-03-01), Mullen
patent: 3504738 (1970-04-01), McGuffey
patent: 3742681 (1973-07-01), DeSeversky
patent: 3913667 (1975-10-01), Meylan et al.
patent: 3995689 (1976-12-01), Cates
patent: 3997635 (1976-12-01), Hallgren
patent: 4014962 (1977-03-01), Del Notario
patent: 4096214 (1978-06-01), Percevaut et al.
patent: 4252752 (1981-02-01), Flandroy
patent: 4314605 (1982-02-01), Sumitomo et al.
Kragh Loren G.
Sanderson William G.
Sumner Richard B.
Chiesa Richard L.
Hanes Richard W.
Tower Systems Inc.
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