The description, main characteristics and flight tests results of the closed-cycles three-cascade helium refrigerator operating to 4.4 K are presented. The refrigerator is intended for the colling far-infraed (submillimeter) detectors of the telescope BST-IM on board of the orbital station 'Salyut-6'. The cryogenic system which uses two high efficient gas cooling machines operating under Sterling cycle for the preliminary cooling at levels 80 K and 20 K and Joule-Thomson cooling effect to obtain the temperature 4.4K is compact and simple to operate in automatic regime. The first space helium refrigerator described provides the useful refrigeration of 0.5 W with power requirements of less than 1.5 kW.


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    Title :

    Space helium refrigerator


    Additional title:

    Heliumverfluessiger fuer den Weltraum


    Contributors:

    Published in:

    Cryogenics ; 21 , 8 ; 474-478


    Publication date :

    1981


    Size :

    5 Seiten, 7 Bilder, 1 Tabelle, 8 Quellen



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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