Refrigeration – Using electrical or magnetic effect – Thermoelectric; e.g. – peltier effect
Patent
1978-03-03
1979-10-23
King, Lloyd L.
Refrigeration
Using electrical or magnetic effect
Thermoelectric; e.g., peltier effect
62 94, 62271, 62311, 126432, 203 18, F25B 2700, F25D 1706, F28D 500, F24J 302
Patent
active
041716205
ABSTRACT:
A cooling method and system are provided wherein a stream of relatively wet warm air is passed in contact with a liquid hygroscopic material in a water cooled absorbent zone to produce a stream of relatively cool dry air. The latter is then passed through an evaporative cooling zone in contact with water and the resulting cooled air or water is used as a cooling or refrigerating medium. A portion of the cooled water is used to cool the absorbent zone to an extent that the dried stream of air has a greater capacity to evaporatively cool the water than it would have in the absence of such cooling, thereby permitting the production of desired stream of cool, dry air. The relatively wet liquid hygroscopic material resulting from the drying of the air as above mentioned, is then passed as a film through a heating zone wherein it is exposed to solar heat or other low level heat to evaporate absorbed water from the hygroscopic material with the evaporated water being swept away from the film by a stream of ambient air which is ultimately discharged to the atmosphere.
A method and apparatus are also provided for contacting a gas and a liquid to facilitate a mass exchange therebetween, especially when the volume of the liquid is small compared to that of the gas and where extensive contact between the liquid and gas is necessary to achieve the desired mass exchange. Also, provision is made for removing heat from the liquid during its contact with the gas. Thus, a plurality of finned heat exchangers are stacked, one above the other, and the liquid to be contacted is fed onto the upper heat exchanger at one end thereof so that it is free to flow along the vertical surfaces of the fins.
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patent: 4011731 (1977-03-01), Meckler
patent: 4026681 (1977-05-01), Roskelley
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