Thermofluid Analysis of Shuttle Loss on Regenerative Cryocoolers

  • K. Naka
  • T. Inaguchi
  • M. Nagao
  • H. Yoshimura
Part of the Advances in Cryogenic Engineering book series (ACRE, volume 43)

Abstract

Shuttle loss is one of major losses of regenerative cryocoolers. In order to improve the efficiency of the cryocoolers, we have to estimate the shuttle loss precisely and reduce it. However, it has been difficult to calculate shuttle loss precisely because the hydrodynamic behavior of the working fluid has not been considered in the analyses and the temperature gradient of the working fluid was given as linear. Therefore, using a general purpose thermofluid analysis software STAR-CD1, we made a model in which the hydrodynamic behavior of the working fluid was considered. By using this model we did a thermofluid analysis which calculated the movement of the working fluid and the temperature change. From this, we calculated the shuttle loss. As a result of these calculations, the preciseness of the calculation model was confirmed by comparing with previous analyses. This means that acceptable analysis is possible with general purpose software, and various models. This paper reports on the analysis model and the results.

Keywords

Temperature Gradient Hydrodynamic Behavior Linear Temperature Gradient Acceptable Analysis Fluid Cylinder 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    Computational Dynamics Ltd.: “STAR-CD Ver 3.0”Google Scholar
  2. 2.
    F. J. Zimmerman and R. C. Longsworth: “Shuttle Heat Transfer” Adv. Cryog. Eng. 16 (1970) 342Google Scholar
  3. 3.
    R. Radebaugh and J. E. Zimmerman: “Shuttle Heat Transfer in Plastic Displacer at Low Speeds” NBS Special Publication 508 (1978) 67Google Scholar
  4. 4.
    S. Nishio, T. Inada and H. Nakagome: “Shuttle Heat Transfer in Refrigerators” Journal of the Cryogenic Society of Japan 27 (1992) 507CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 1998

Authors and Affiliations

  • K. Naka
    • 1
  • T. Inaguchi
    • 1
  • M. Nagao
    • 1
  • H. Yoshimura
    • 1
  1. 1.Advanced Technology R&D CenterMitsubishi Electric Corp.Amagasaki City Hyogo 661Japan

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