Abstract Fuji Electric has designed, fabricated and tested a 70 K pulse tube cryocooler. The cryocooler was designed for commercial use to provide 2 to 3 W at 70 K. The basic concept of this cryocooler is compactness, low cost, high reliability and high performance. A compressor is a key part for providing a compact cryocooler. The compressor is composed of dual-opposed-pistons that move with a coil. A new concept for supporting the moving units with flexure bearings enables a smaller size in the axial direction. The reduction or integration of parts significantly diminishes the cost of the compressor. The pulse tube part of the cryocooler is implemented in an in-line configuration in order to provide high cooling performance. Dimensions of the pulse tube, regenerator geometry and phase shifter are optimized by experimental methods. In addition, the cooling performance has been enhanced by optimization of the compressor. Application of these technologies enables the pulse tube cryocooler to provide a cooling capacity of 2.5 W at 70 K with 100 W electrical input. Reliability is one of the most important requirements, and component reliability tests, which include mechanical fatigue of the flexure bearings and contamination of the helium working gas, were conducted. The lifetime of the cryocooler is expected to be more than 50,000 hours.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Design and Test of a 70 K Pulse Tube Cryocooler


    Contributors:
    Yasukawa, Y. (author) / Ohshima, K. (author) / Toyama, K. (author) / Itoyama, T. (author) / Tsukahara, Y. (author) / Kikuchi, R. (author) / Matsumoto, N. (author) / Kamoshita, T. (author) / Takeuchi, T. (author)

    Published in:

    Publication date :

    2003-01-01


    Size :

    8 pages




    Type of media :

    Article/Chapter (Book)


    Type of material :

    Electronic Resource


    Language :

    English




    Design and Test of a 70 K Pulse Tube Cryocooler

    Yasukawa, Y. / Ohshima, K. / Toyama, K. et al. | British Library Conference Proceedings | 2003


    Helium-3 Pulse Tube Cryocooler

    Tanaeva, I. A. / De Waele, A. T. A. M. | British Library Conference Proceedings | 2003


    AIRS Pulse Tube Cryocooler System

    Chan, C. K. / Raab, J. / Eskovitz, A. et al. | British Library Conference Proceedings | 1997


    High Capacity Pulse Tube Cryocooler

    Charles, I. / Duval, J. M. / Duband, L. et al. | British Library Conference Proceedings | 2003


    High Capacity Pulse Tube Cryocooler

    Charles, I. / Duvaland, J. M. / Duband, L. et al. | Springer Verlag | 2003