Refrigeration – Processes – Reducing pressure on compressed gas
Patent
1997-09-05
1999-12-07
Kilner, Christopher B.
Refrigeration
Processes
Reducing pressure on compressed gas
622382, 62402, F25B 900, F25D 900
Patent
active
059963557
ABSTRACT:
A thermodynamic closed cycle power and cryogenic refrigeration apparatus which simultaneously produces power and refrigeration. A mixture of a non-condensable first gas such as helium or hydrogen that is in state far from its saturation point and a condensable second gas such as nitrogen or ammonia that is capable of condensing during a working process but non-freezable is isothermally compressed in a sliding-blade gas/liquid compressor then the liquid content that absorbed adiabatic heat during compression of the gas/liquid mixture is separated from the mixture in a vortex separator. The cool non-condensable first gas is supplied to a heat exchanger and isobarically heated using heat of the ambient air or other low-temperature heat source to produce cool refrigerated air. The heated and compressed first gas enters a sliding-blade gas expander and adiabatic expanded and cooled while performing useful work by causing simultaneous rotation of the gas/liquid compressor rotor and gas expander rotor. The adiabatically expanded cool first gas enters a vortex ejector/mixer and is mixed with the separated liquified second gas to serve as a coolant and facilitate rejection of adiabatic heat and supplement the cool gas/liquid mixture which is being fed to the gas/liquid compressor and isothermally compressed to complete the cycle.
REFERENCES:
patent: 3913351 (1975-10-01), Edwards
patent: 3967466 (1976-07-01), Edwards
patent: 4027993 (1977-06-01), Wolff
patent: 4041708 (1977-08-01), Wolff
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patent: 4187692 (1980-02-01), Midolo
patent: 4187694 (1980-02-01), Midolo
Jirnov Alexei
Jirnov Olga
Kilner Christopher B.
Roddy Kenneth A.
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