Partager

Document IIF

Etude expérimentale sur un cryorefroidisseur biétagé à tube à pulsation fonctionnant à des températures jusqu'à 3,5 K

Experimental investigations of a two-stage pulse tube cryocooler operating down to 3.5 K.

Auteurs : SHAFI K. A., MOHAMMED SAJID N. K., ABDUL RASHEED K. K., et al.

Résumé

A two-stage pulse tube cryocooler is developed with a no-load temperatures of 3.5 K in the second stage and about 64 K in the first stage at an operating frequency of 1.6 Hz. The system gives a cooling power of about 250 mW at 6.5 K in the second stage. It uses stainless steel meshes (size 200) and lead for the first stage regenerator. Combinations of lead and Er3Ni are used for the second stage regenerator. A helium compressor (6 kW) and an indigenously developed rotary valve generate the pressure oscillations. Studies conducted with several configurations indicate that the pulse tube dimensions are more critical compared to those of regenerator to achieve low temperatures. Also the system performance improved with the proper design of cold end heat exchangers with minimum flow impedance. These results along with cooling power characteristics of the cryocooler are discussed in this paper.

Documents disponibles

Format PDF

Pages : 2006-3/ICEC III-C3

Disponible

  • Prix public

    20 €

  • Prix membre*

    Gratuit

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Experimental investigations of a two-stage pulse tube cryocooler operating down to 3.5 K.
  • Identifiant de la fiche : 2008-1041
  • Langues : Anglais
  • Source : Multiconference CryoPrague 2006 (9th Cryogenics 2006, ICEC 21, ICMC'06)
  • Date d'édition : 17/07/2006

Liens


Voir d'autres communications du même compte rendu (142)
Voir le compte rendu de la conférence

Indexation