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Evaporation of R32/R152a mixtures on the Pt surface: A molecular dynamics study.

Évaporation de mélanges R32/R152a sur la surface du platine : étude par dynamique moléculaire.

Auteurs : CAI S., LI Q., LIU C., ZHOU Y.

Type d'article : Article de la RIF

Résumé

The refrigerants mixture has a great perspective in the thermal engineering, while the evaporation of refrigerants mixture still needs to be studied in depth. Therefore, molecular dynamics simulations were employed to investigate the evaporation process of the following refrigerants, pure refrigerant R32, R152a and R32/R152a mixtures (with mole ratio of 1:1, 3:1, and 1:3), on the Pt surface at 220 K, 250 K and 350 K, respectively. The results showed that R32 is more likely to evaporate than R152a in the simulated systems under the same conditions. The Pt substrate absorbs more R32 molecules than R152a molecules. Besides, the nucleate boiling and film boiling are found in the systems evaporating at 350 K. The results also suggest that the existence of R152a molecules will alleviate the boiling of R32 molecules, owing to the higher boiling point of R152a and the weaker adsorption capacity of R152a on the Pt surface. And the R32/R152a mixture systems own better cooling capacity than that of pure R32 and pure R152a systems.

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Format PDF

Pages : 156-163

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Détails

  • Titre original : Evaporation of R32/R152a mixtures on the Pt surface: A molecular dynamics study.
  • Identifiant de la fiche : 30027423
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 113
  • Date d'édition : 05/2020
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2020.02.007

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