Patent ID: 7234318

Claim:
A three stage, single pass and non-recirculating refrigeration system, comprising: first, second and third separate evaporative coils arranged in series with respect to a single airstream whereby said single airstream flows through said first coil, then through said second coil and then through said third coil, blower means for driving ambient air directly through said first, second and third evaporative coils in said single airstream, compressor means for compressing a refrigerant, condenser means for condensing said refrigerant, piping means for connecting said evaporative coils with said compressor means and condensing means, a refrigerant circulating through said compressor means, condenser means and said first, second and third evaporative coils, and output means for directing said airstream along a desired output airstream pathway after said airstream passes through said first, second and third coils, whereby said output airstream is 40° to 50° F. cooler and 60% to 75% drier than said ambient air and wherein said output airstream is not recirculated back into said blower means.