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Document IIF

Cryocables à cycle Stirling de très faible puissance utilisant des matériaux plastiques et composites.

Very low-power Stirling cryocoolers using plastic and composite materials.

Auteurs : SULLIVAN D. B, ZIMMERMAN J. E.

Type d'article : Article, Article de la RIF

Résumé

An experimental investigation of several concepts for very-low-power cryocoolers for operating highly-sensitive superconducting
devices has been undertaken. The devices to be cooled are those using Josephson junctions, such as SQUID magnetometers, voltage standards and A/D converters. The common basic feature of the concepts is that very low levels of magnetic, electric, and mechanical interference are potentially realizable. Nylon and epoxy-glass composites have been used for cold cylinders, pistons, and displacers. A multi-stage Stirling machine of these materials reliably maintains a temperature below 10 K, with a few mW heat load and an input drive power of 50 W. A single-stage machine maintains a temperature in the neighbourhood of 4 K with the hot end at 10 K and a drive power of the order of 5 W. Specific heats and thermal conductivities of the materials have been measured between 5 and 10 K, for purposes of analysis of regeneration inefficiency.

Documents disponibles

Format PDF

Pages : 211-213

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 : Very low-power Stirling cryocoolers using plastic and composite materials.
  • Identifiant de la fiche : 30000858
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 2 - n.6
  • Date d'édition : 11/1979

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