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.
Space helium refrigerator
Heliumverfluessiger fuer den Weltraum
Cryogenics ; 21 , 8 ; 474-478
1981
5 Seiten, 7 Bilder, 1 Tabelle, 8 Quellen
Article (Journal)
English
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