초록 ▼

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

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 employing mechanical refrigeration. The stored cooling power of the reservoir is later employed to meet a large or a periodic refrigeration demand and is thereafter replenished 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.

대표청구항 ▼

A method of refrigerating material using stored cryogenic refrigeration, which method comprises creating a reservoir of solid and liquid cryogen in chamber means by maintaining a temperature and a pressure at about the triple point of said cryogen where solid, liquid and vapor cryogen exist in equil

A method of refrigerating material using stored cryogenic refrigeration, which method comprises creating a reservoir of solid and liquid cryogen in chamber means by maintaining a temperature and a pressure at about the triple point of said cryogen where solid, liquid and vapor cryogen exist in equilibrium, separating liquid cryogen from solid cryogen in said reservoir and removing said separated liquid cryogen from said chamber means, circulating said removed liquid cryogen to heat-exchange means where it absorbs heat from said material being refrigerated and vaporizes, and returning said cryogen from said heat-exchange means to said chamber means where said absorbed heat is given up by melting said solid cryogen.