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Etude expérimentale sur les caractéristiques dynamiques d'un cryorefroidisseur Stirling de type split sous différentes conditions de fonctionnement.

Experimental study on dynamic characteristics of a split-type Stirling cryocooler under different operating conditions.

Auteurs : CHEN X., ZHOU Z. G., ZHANG H., et al.

Résumé

An experimental bench was built to measure the dynamic characteristics of a Stirling cryocooler. The dynamic characteristic parameters of the compressor and expander were experimentally tested and analysed. Through an experimental study on the cryocooler temperature pulling down procedure and dynamic characteristics of the expander at low temperature, the variations in dynamic and electric parameters of the cryocooler during the temperature pulling down procedure were factually recorded; the reasons are explained. At the same time, the pressure drop characteristics of the regenerator were measured and analyzed. By cut-off of the expander linear motor, the operating characteristics of pure gas-driven expander of the Stirling cooler were measured and analysed. The mutual influences among the key operating parameters such as operating frequency, natural frequency, cold end temperature, PV power in compression space and expansion space, phase shift between piston and displacer, and the stroke of displacer, which have a great impact on the performance of the cooler, are analyzed and discussed. These results will be very helpful to develop split-type pure gas-driven cryocoolers.

Détails

  • Titre original : Experimental study on dynamic characteristics of a split-type Stirling cryocooler under different operating conditions.
  • Identifiant de la fiche : 2008-1910
  • Langues : Anglais
  • Source : Cryogenics and refrigeration. Proceedings of ICCR'2008.
  • Date d'édition : 05/04/2008

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