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Erschienen in:
1986 | OriginalPaper | Buchkapitel
Development of Small Size Claude Cycle Helium Refrigerator with Micro Turbo-Expander
verfasst von : H. Izumi, S. Harada, K. Matsubara, S. Saito
Erschienen in: Advances in Cryogenic Engineering
Verlag: Springer US
Enthalten in: Professional Book Archive
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In the field of small size helium refrigerators, need for a maintenance free and vibration free system is rapidly increasing, especially for the application to cryoelectronic devices such as NMR-CT and Josephson computers. To meet this need, we have been developing a Claude cycle helium refrigerator (5W at 4.5K) with two-stage expansion micro-turbines. Other than the micro-turbines, compact size perforated- plate heat exchangers and a single-stage screw type compressor have been developed for the system. This paper describes design and test results of the major components of the system with an emphasis on the micro-turbine performance.