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US 4,359,879 AGranted
Refrigeration system and novel heat exchanger therefor
AssigneeDiversified Air Products, Inc.
InventorNeal A. Wright
Life of this patent
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AssigneeDiversified Air Products, Inc.
InventorNeal A. Wright
Estimating the term…
A refrigeration system for cooling and drying hot moist compressed air comprises sub-cooling the liquid refrigerant from the condenser to eliminate all flash gas and render the entire evaporator effective for refrigeration purposes. The heat exchangers for the evaporator and for sub-cooling the liquid refrigerant are of a novel construction comprising a one-piece finned copper inner cylinder with the routed fin enclosed inside of an annular copper shell in which a 0.020-inch clearance exists between the annular copper shell and the fins to allow passage of a stream of air which causes the laminar flow around the routed fin construction to be agitated by eddy diffusion. The use of the novel heat exchanger in the refrigeration system along with the step of sub-cooling the liquid refrigerant produces a gain in refrigeration effect of about 23% to 30% without an increase requirement for either power or energy.
A refrigeration system utilizing a two phase refrigerant comprising a refrigerant compressor for compressing refrigerant vapor, a refrigerant condenser in communication with the compressor for condensing the refrigerant into liquid, an evaporator in communication with the condenser through an expansion means and having a discharge in communication with the compressor, said evaporator including a work fluid flow path and a separate refrigerant flow path, and cooling heat exchanger means for cooling said liquid refrigerant from said condenser prior to the refrigerant entering the refrigerant flow path in the evaporator;
Dependencies are inferred from the claim text.