Air conditioning and refrigeration systems utilizing a cryogen

Details Air conditioning and refrigeration systems utilizing a cryogen Air conditioning and refrigeration systems utilizing a cryogen

1992-11-27

1993-12-07

Capossela, Ronald C.

Refrigeration

Storage of solidified or liquified gas

Liquified gas transferred as liquid

62167, 62239, F17C 902

Patent

active

052674460

ABSTRACT:
Methods and apparatus for controlling the temperature of a conditioned space, including a supply of cryogen, and a fluid flow path for the cryogen which includes a heat exchanger. A heater is disposed to heat cryogen in the flow path in response to predetermined conditions, and a cryogen pre-heater is disposed to aid the heater. In a first embodiment, the pre-heater is aided by directing warm cryogen in heat exchange relation with cryogen flowing through the pre-heater, with the warm cryogen being taken from a point downstream from the heat exchanger. In another embodiment, the heater generates heated gases as a by-product, with the pre-heater being aided by directing the heated gases in heat exchange relation with cryogen flowing through the pre-heater.

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