Refrigeration – Storage of solidified or liquified gas – Liquified gas transferred as liquid
Patent
1991-02-06
1992-02-25
Tanner, Harry B.
Refrigeration
Storage of solidified or liquified gas
Liquified gas transferred as liquid
62156, 62275, 62 81, 62526, F25D 2106
Patent
active
050902091
ABSTRACT:
A method and apparatus to refrigerate air in a compartment wherein liquid CO2 is delivered through a first primary heat exchanger such that sufficient heat is absorbed to evaporate the liquid carbon dioxide to form pressurized vapor. The pressurized vapor is heated in a gas fired heater to prevent solidification of the pressurized carbon dioxide when it is depressurized to provide isentropic expansion of the vapor through pneumatically driven fan motors into a secondary heat exchanger. Orifices in inlets to the fan motors and solenoid valves in flow lines to the fan motors keep the vapor pressurized while the heater supplies sufficient heat to prevent solidification when the CO2 vapor expands through the motors. CO2 vapor is routed from the second heat exchanger to chill surface in a dehumidifer to condense moisture from a stream of air before it flows to the heat exchangers.
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General Cryogenics Incorporated
Tanner Harry B.
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