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Analyse de performance de systèmes frigorifiques à compression de vapeur avec injection de vapeur dans un compresseur linéaire sans huile et avec régénération.

Performance analysis of vapor compression refrigeration systems with oil-free linear compressor vapor injection and regeneration.

Numéro : pap. n. 407

Auteurs : ZHANG X., ZIVIANI D., BRAUN J. E., et al.

Résumé

Previous studies showed that compressor vapor injection combined with economizing increases the efficiency of vapor compression cycles by decreasing compressor specific work and increasing cooling capacity. However, most of the previous studies focused on injection for scroll/screw compressors with oil or vapor gas, which limits the refrigerant compatibility and compressor designs. Recently, linear compressors have drawn much attention due to their high efficiencies and oil-free operation. The unique design of linear compressors allows the integration of cooling paths into the piston-cylinder assembly to cool the compressor by an economizing refrigerant. This paper proposes an oil-free linear compressor piston-cylinder cooling design and assesses its potential for approaching a quasi-isothermal compression process through utilization of refrigerant economizing and regeneration technology. A system simulation model was developed and used to analyze the system performance. Performance comparisons between the proposed system and a conventional system are presented along with an assessment of the improvement of system efficiencies.

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Pages : 8

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Détails

  • Titre original : Performance analysis of vapor compression refrigeration systems with oil-free linear compressor vapor injection and regeneration.
  • Identifiant de la fiche : 30026415
  • Langues : Anglais
  • Source : Proceedings of the 25th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
  • Date d'édition : 24/08/2019
  • DOI : http://dx.doi.org/10.18462/iir.icr.2019.0407

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