Production et utilisation d'un agent de refroidissement dans des dispositif cryogéniques

Production and use of coolant in cryogenic devices

Herstellung und Verwendung eines Kühlmittels für Kryogenvorrichtungen


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 allows a simple and small structure of the cooling system, and a prevention of environmental pollution.




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Patent Citations (0)

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NO-Patent Citations (3)

    CHEMICAL ABSTRACTS, vol. 109, abstract no. 57500m, Columbus, Ohio, US; A.K. GREZIN et al.: "Thermodynamic analysis of an air-fractionation unit with a throttling refrigeration cycle", & KHIM. NEFT. MASHINOSTR., (5), 11-13
    CHEMICAL ABSTRACTS, vol. 98, abstract no. 25353d, Columbus, Ohio, US; & JP-A-57 141 986 (FUJITSU LTD) 02-09-1982
    DERWENT FILE SUPPLIER JAPS, Derwent Publications, London, GB; & JP-A-58 146 917 (FUJITSU K.K.) 01-09-1983

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