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Refroidisseur biétagé à tube à pulsation haute fréquence pour le refroidissement à 25 K.

Two-stage high frequency pulse tube cooler for refrigeration at 25 K.

Auteurs : DIETRICH M., THUMMES G.

Type d'article : Article

Résumé

A two-stage Stirling-type U-shape pulse tube cryocooler driven by a 10 kW-class linear compressor was designed, built and tested. A special feature of the cold head is the absence of a heat exchanger at the cold end of the first-stage, since the intended application requires no cooling power at this intermediate temperature. Simulations where done using Sage-software to find optimum operating conditions and cold head geometry. Flow-impedance matching was required to connect the compressor designed for 60 Hz operation to the 40 Hz cold head. A cooling power of 12.9 W at 25 K with an electrical input power of 4.6 kW has been achieved up to now. The lowest temperature reached is 13.7 K. [Reprinted with permission from Elsevier. Copyright, 2010].

Détails

  • Titre original : Two-stage high frequency pulse tube cooler for refrigeration at 25 K.
  • Identifiant de la fiche : 2010-1012
  • Langues : Anglais
  • Source : Cryogenics - vol. 50 - n. 4
  • Date d'édition : 04/2010
  • DOI : http://dx.doi.org/10.1016/j.cryogenics.2010.01.010

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