Multi-temperature cryogenic refrigeration system

Details Multi-temperature cryogenic refrigeration system Multi-temperature cryogenic refrigeration system

F - Mech Eng,Light,Heat,Weapons

25

D

F25D 3/12 (2006.01) B60H 1/32 (2006.01) B60P 3/20 (2006.01) B61D 27/00 (2006.01)

Patent

CA 2115289

A multi-temperature cryogenic refrigeration system for a container is selectively operable to maintain its cargo in frozen and non-frozen conditions. The system includes a cargo compartment defined by a floor, a pair of opposed side walls, a pair of opposed end walls, and a lower ceiling. A roof is located above the lower ceiling. Upper and lower compartments or bunkers are provided between the lower ceiling and the roof, and are separated by a fixed, non-porous upper ceiling. A plurality of openings extend through the lower ceiling for fluid communication between the lower compartment and the cargo compartment. Upper and lower cryogenic snow- forming devices are provided in the upper and lower compartments, with each snow-forming device having a coupling connecting it to a supply of cryogenic liquid. Conduits or passages are located in the walls and floor to convey the cryogenic snow and gas from the upper compartment and through the walls and floor in a manner that isolates the cryogenic snow and gas from the cargo compartment.

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