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Expérience et comparaison de deux nouveaux cycles frigorifiques au R718 dans un refroidisseur à moyenne température.

Experiment and comparison of two novel R718 refrigeration cycles in medium temperature chiller.

Numéro : 0158

Auteurs : CHAUVIN A., KANG K., ORTEGO SAMPEDRO E., SKAYEM J-P., TECHER A., ZOUGHAIB A.

Résumé

The development of system based on natural refrigerants has been very important in these recent decades, in order to mitigate global warming, pollution, but also against environmental risks and those related to health and safety. Water is undoubtedly one of the most abundant and safest refrigerants on the planet. Nevertheless, existing studies on water as a working fluid are few and often theoretical. They are mainly limited by the unavailability of a suitable compressor on the market, making experimental study of this refrigerant complex. A prototype of small capacity two-stage high-speed centrifugal compressor has been used in this study to explore R718 refrigeration cycles in medium temperature applications (cold water from 7°C to 25°C). In this paper, we are studying R718 in a direct exchange mechanical vapor compression refrigeration cycle with and without assistance of a two-phase ejector. The experimental bench is presented and the performances of the refrigeration cycle with and without two-phase ejector are analyzed.

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Pages : 10 p.

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    20 €

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Détails

  • Titre original : Experiment and comparison of two novel R718 refrigeration cycles in medium temperature chiller.
  • Identifiant de la fiche : 30029751
  • Langues : Anglais
  • Sujet : Technologie
  • Source : 15th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL2022). Proceedings. Trondheim, Norway, June 13-15th 2022.
  • Date d'édition : 13/06/2022
  • DOI : http://dx.doi.org/10.18462/iir.gl2022.0158
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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