Abstract For the purpose of cooling space-borne infrared devices, two types of miniature multi-bypass coaxial pulse tube refrigerators are currently under development in our laboratory. The Oxford-style compressors with flexure bearings and clearance seals made by our laboratory are used to generate the pressure waves. The first type of miniature pulse tube refrigerator is designed for a compressor with about 2 cc swept volume. It is expected to provide 1 W of cooling power at 80 K. The second type of miniature pulse tube refrigerator uses a compressor with 0.79 cc swept volume. It is designed to have a cooling capacity of 150 mW at 85 K. At present the first one, coupled with a 1.66 cc compressor, reaches 66 K with no cooling load and produces 0.6 W of cooling power at 80 K with 66 W compressor input power, while the second one reaches 82 K and produces 100 mW at 85 K with 29 W input power.
Performances of Two Types of Miniature Multi-Bypass Coaxial Pulse Tube Refrigerators
Cryocoolers 10 ; 205-211
01.01.2002
7 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Performances of Two Types of Miniature Multi-Bypass Coaxial Pulse Tube Refrigerators
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