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Document IIF

Transfert de chaleur par ébullition en écoulement de R1234yf sur une surface en cuivre enduite de microparticules.

Flow boiling heat transfer of R1234yf on a microparticle coated copper surface.

Numéro : pap. n. 564

Auteurs : MANCIN S., DIANI D., VEZZÙ S., et al.

Résumé

This paper presents some preliminary experimental measurements collected during flow boiling heat transfer of low-GWP refrigerant R1234yf on a microparticle coated surface obtained via cold spray, a simple and non-expensive technique. The specific surface engineering was obtained by depositing a 100 µm thick pure copper coating on a smooth copper plate 200 mm long and 10 mm wide. The coating was deposited via High Pressure Cold Spray (HPCS) starting from a feedstock of pure copper particles with average size of 20 µm. The experimental measurements, carried out at the department of Industrial Engineering of the University of Padova, refer to a heat flux equal to 50 kW m-2, at a constant saturation temperature of 30°C; the refrigerant mass velocity was varied between 30 and 200 kg m-2 s-1, while the vapour quality varied from 0.2 to 0.95.

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Format PDF

Pages : 8 p.

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Détails

  • Titre original : Flow boiling heat transfer of R1234yf on a microparticle coated copper surface.
  • Identifiant de la fiche : 30016372
  • Langues : Anglais
  • Source : Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
  • Date d'édition : 16/08/2015
  • DOI : http://dx.doi.org/10.18462/iir.icr.2015.0564

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