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On the oscillating flow behaviour of pulse tube refrigerators.

Author(s) : YU Y.

Summary

The behaviour of working gas subjected to an oscillating flow in a confined passageway has been extensively studied and has bad particular appeal from thermal engineering community to low temperature refrigerator. One particularly subtle subject of the pulse tube refrigerator research comes from the significant quantitative dispersion between experimental data and predictions evaluated by the widely used correlations based on steady-state flows. Recent experiments of cylindrical empty tubes and regenerators under oscillatory flow conditions were intended primarily to provide such information. The paper assesses the state-of-the-art in this subject, emphasizing the basic concepts and their relation to those of steady-state flows. The author briefly summarizes his previous work and presents some useful results, including experimental measurements on the oscillating flow behaviours of regenerators filled with metallic wire screens and of cylindrical empty tubes, primarily DC-gas flow measurements, and a CFD model for thermal and fluid dynamic analyses of pulse tube refrigerators.

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Details

  • Original title: On the oscillating flow behaviour of pulse tube refrigerators.
  • Record ID : 2004-2633
  • Languages: English
  • Source: 21st IIR International Congress of Refrigeration: Serving the Needs of Mankind.
  • Publication date: 2003/08/17

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