Patent ID: 8353175
Filing Date: 2013-01-15
Classification: F25B

Abstract:
1. A cooling system for a building, the system comprising: a plurality of roof top units, each roof top unit including, (i) one or more compressors, (ii) at least one outdoor coil, (iii) at least one expansion device, (iv) at least one indoor coil, (v) refrigerant pipes coupling the one or more compressors, the at least one outdoor coil, the at least one expansion device and the at least one indoor coil in a loop, the piping being configured to contain and permit the flow of refrigerant, (vi) a housing substantially containing the one or more compressors, the at least one outdoor coil, the at least one expansion device, the at least one indoor coil, and the piping, (vii) at least one first valve configured to selectively isolate flow of refrigerant through the refrigerant pipes between the indoor and outdoor coils, (viii) at least one pair of pipes exiting the roof top unit, the at least one pair of pipes being fluidly coupled to the refrigerant pipes, (ix) at least one second valve configured to selectively permit flow of refrigerant from the indoor coil through at least one pair of pipes exiting the roof top unit; a centralized refrigeration unit, the centralized refrigeration unit being separate and distinct from each of the plurality of roof top units and including at least one compressor; and connector pipes coupling the at least one pair of pipes exiting each roof top unit to the centralized refrigeration unit.