Stored cryogenic refrigeration

Details Stored cryogenic refrigeration Stored cryogenic refrigeration

F - Mech Eng,Light,Heat,Weapons

25

B

62/26, 62/77

F25B 39/02 (2006.01) F25D 3/12 (2006.01) F25D 16/00 (2006.01)

Patent

CA 1110861

STORED CRYOGENIC REFRIGERATION ABSTRACT A holding chamber may be supplied from a storage vessel system with a cryogen, such as liquid CO2, or it may itself be large enough to take the place of a separate storage vessel. The temperature within the holding chamber is reduced to the triple point or below to form a refrigeration reservoir of solid cryogen, as by removing vapor from the chamber to cause evaporation or by employ- ing mechanical refrigeration. The stored cooling power of the reservoir is later employed to meet a large or a periodic refrigeration demand and is thereafter replenish- ed over a number of hours, preferably during a period of non-peak electric demand. This storage principle can be incorporated into a variety of different refrigeration systems, For example, a CO2 storage system may be used to produce and store solid CO2 during a period of low demand upon a coupled mechanical refrigeration system; thereafter, the solid CO2 is used to supplement the mechanical system during a high-demand period, thereby increasing the effective refrigeration capacity of the mechanical system.

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