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Free-piston Stirling cryocooler (FPSC) for low-temperature applications down to 110 K.

Cryorefroidisseur Stirling à piston libre pour les applications à basse température jusqu’à 110 K.

Auteurs : PARK J., KIM H., KO J., IN S., HONG Y., YEOM H., PARK S.

Type d'article : Article de la RIF

Résumé

This research paper describes the experiments and demonstrations of the free-piston Stirling cryocooler (FPSC) we developed. Driven with an oil-free linear compressor, the FPSC is thoroughly tested with various cold-end temperatures between 110 K and 190 K, absorbing 1.03 kW heat at cold-end temperature of 110 K with electric input of 8 kW. The resulting cooler efficiency is estimated to be 0.13 considering a compression efficiency of 0.75. The experimental results are analyzed with a pre-developed numerical model that considers not only the thermodynamics of the working fluid of the FPSC but also the mechanical behavior of the reciprocating piston and displacer by introducing a fictitious damping coefficient to the equation of motion. The numerical model is able to predict the physical variables of the FPSC within 10% deviation under various cold-end temperature conditions. Thanks to the flexibility in regulating its cold-end temperature, the FPSC can be utilized for various applications, i.e., liquefied natural gas (LNG), semiconductor etching, bio/reagent preservation applications, etc. Finally, the FPSC is integrated as a major part of a small-scale liquefier to demonstrate the feasibility of liquefaction of natural gas (NG).

Documents disponibles

Format PDF

Pages : 218-229

Disponible

  • Prix public

    15 €

  • Prix membre*

    Gratuit

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

Détails

  • Titre original : Free-piston Stirling cryocooler (FPSC) for low-temperature applications down to 110 K.
  • Identifiant de la fiche : 30027523
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 117
  • Date d'édition : 09/2020
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2020.04.020
  • Disponible à la bibliothèque de l'IIF

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