COOLING SYSTEMS AND METHODS INCORPORATING A PLURAL IN-SERIES PUMPED LIQUID REFRIGERANT TRIM EVAPORATOR CYCLE
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United States of America Patent
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Issued Date -
Apr 9, 2020
app pub date -
Jul 8, 2019
filing date -
Oct 9, 2012
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Abstract
The cooling systems and methods of the present disclosure relate to a plural in-series pumped liquid refrigerant trim evaporator cycle that may be incorporated into an existing cooling system to increase the efficiency of the existing cooling system. The cooling systems of the present disclosure include a first evaporator coil in thermal communication with an air intake flow to a heat load, such as a heat load being cooled by the existing cooling system, and a first liquid refrigerant distribution unit in thermal communication with the first evaporator coil. The cooling systems further includes a second evaporator coil disposed in series with the first evaporator coil in the air intake flow and in thermal communication with the air intake flow, and a second liquid refrigerant distribution unit in thermal communication with the second evaporator coil. A trim compression cycle of the second liquid refrigerant distribution unit is configured to incrementally further cool the air intake flow through the second evaporator coil when the temperature of the free-cooled first fluid flowing out of the main compressor of the second liquid refrigerant distribution unit exceeds a predetermined threshold temperature.
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