Production and use of coolant in cryogenic devices

Details Production and use of coolant in cryogenic devices Production and use of coolant in cryogenic devices

C - Chemistry, Metallurgy

09

K

31/63, 62/77

C09K 5/04 (2006.01) F25D 3/10 (2006.01) H01L 23/44 (2006.01) H01L 23/473 (2006.01)

Patent

CA 2003062

A coolant for use in cryogenic devices of closed cycle system which comprises a mixture of a liquid nitrogen and a fluorocarbon of the formula: CnF 2n+2, wherein n is an integer of 2 to 4. The coolant, when used to cool heat generating semiconductor devices and other devices to a cryogenic temperature, exhibits an increased heat flux and thus an increased cooling capability, in addition to a simple and small structure of the cooling system, and a prevention of environmental pollution.

Refroidisseur pour dispositifs cryogéniques de systèmes en circuit fermé, comportant un mélange d'azote liquide et un fluorocarbure de formule CnF2n+2, n étant un entier de 2 à 4. Le refroidisseur, lorsqu'il est employé pour refroidir des semiconducteurs produisant de la chaleur, ou d'autres systèmes, afin de les amener à une cryotempérature, possède un flux thermique plus grand et, par conséquent, une capacité de refroidissement supérieure; de plus, le système de refroidissement a une structure simple et peu encombrante, et il permet de prévenir la pollution de l'environnement.

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