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Document IIF

Performance d’un système frigorifique à compression de vapeur sans huile au R134a.

Performance of an oil-free vapour compression refrigeration system using R134a.

Numéro : pap. n. 317

Auteurs : LI Z., LIANG K., JIANG H.

Résumé

By using a novel linear compressor, lubricant can be eliminated from a vapour compression refrigeration (VCR) system, which offers significant advantages in selection of refrigerants, miniaturization of refrigerator, and heat transfer improvement. In this study, performance of an oil-free VCR system was studied. The system has been constructed using a novel oil-free linear compressor, off-the-shelf condenser unit and an evaporator with electric heater. The oil-free VCR system was instrumented using R134a as refrigerant. The linear compressor was tested with strokes from 9 mm to 13 mm and pressure ratios from 2.0 to 4.0. The refrigerant charge is 300 g, and condenser outlet temperature was controlled from 40 °C to 55 °C. The experimental results show that the oil-free VCR system can achieve a cooling capacity of 311 W and a coefficient of performance (CoP) of 3.65 with a condenser temperature at 40°C, a pressure ratio of 2.5, and a stroke of 12 mm.

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Pages : 7

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    20 €

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    Gratuit

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Détails

  • Titre original : Performance of an oil-free vapour compression refrigeration system using R134a.
  • Identifiant de la fiche : 30025982
  • 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.2019.0317

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