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Effet des caractéristiques transitoires des tubes sur la performance des cryorefroidisseurs à tube à pulsation.

Effect of alternate tube characteristics on high capacity pulse tube cryocoolers performance.

Auteurs : SAIDI M. H., SARIKHANI N., JAFARIAN A., et al.

Résumé

High capacity pulse tube cryocoolers offer the promise of the cooling capacity required for operation of superconducting devices. The purpose of this paper is to investigate the influence of the alternate tube characteristics on a high capacity pulse tube cryocooler performance, intended to achieve 250 W at 80 K. In this respect the hydrodynamic and thermal behaviour of the cooler is explained by applying the mass and energy balance equations to different parts of the cryocooler. Nodal analysis technique is employed to simulate the tube section behaviour numerically. Employing the proposed model the effect of essential characteristics such as tube aspect ratio, frequency of oscillations, reservoir volume and double inlet is considered. To determine the optimum operation conditions that maximize the enthalpy flow and thus the coefficient of performance, net enthalpy flow analysis is conducted. The results of this analysis are tested and validated by comparing them with the experimental data.

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Pages : 2008-1

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Détails

  • Titre original : Effect of alternate tube characteristics on high capacity pulse tube cryocoolers performance.
  • Identifiant de la fiche : 2008-1441
  • Langues : Anglais
  • Source : Cryogenics 2008. Proceedings of the 10th IIR International Conference
  • Date d'édition : 21/04/2008

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