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Développement d'un compresseur linéaire à soupapes pour un cryogénérateur Joule-Thomson embarqué dans un satellite.

Development of a valved linear compressor for a satellite borne J-T cryocooler.

Auteurs : REED J., DADD M., BAILEY P., et al.

Type d'article : Article

Résumé

The provision of temperatures below 12 K is essential for sub-mm and FIR observations from satellite instruments. Historically this has been achieved with stored cryogens, however mechanical coolers could potentially provide higher reliability and flexibility. These cryocoolers typically incorporate a regenerative cold-finger, such as a pulse-tube, however this can be replaced by a recuperative Joule-Thomson stage to obtain the lowest temperatures required. The major change to the compressor is the requirement for steady flow. This paper describes the development of such a compressor using reed valves, based on space-qualified hardware. Long life potential was demonstrated by measuring the motion of the valves during operation. A model was also developed and validated to optimize performance.

Détails

  • Titre original : Development of a valved linear compressor for a satellite borne J-T cryocooler.
  • Identifiant de la fiche : 2005-2389
  • Langues : Anglais
  • Source : Cryogenics - vol. 45 - n. 7
  • Date d'édition : 07/2005

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