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Modélisation de la conductivité thermique des frigorigènes liquides de type hydrofluorocarbure, hydrofluorooléfine et hydrochlorofluorooléfine.

Modeling thermal conductivity of liquid hydrofluorocarbon, hydrofluoroolefin and hydrochlorofluoroolefin refrigerants.

Auteurs : LIU Y., WU C., ZHENG H., LI Q.

Type d'article : Article de la RIF

Résumé

A simple and accurate thermal conductivity model is of importance for the development of hydrofluorocarbon (HFC), hydrofluoroolefin (HFO) and hydrochlorofluoroolefin (HCFO) refrigerants. In this work, a semi-empirical model for representing the thermal conductivity of HFC/HFO/HCFO refrigerants in liquid phase was established. The proposed thermal conductivity model was based on Modified Enskog Theory (MET) model, combining with Peng-Robinson Equation of State (PR equation), with the empirical modification made in the cross contribution term of MET model to improve its accuracy. The newly derived equation was then used to calculate liquid thermal conductivities of 14 HFC/HFO/HCFO refrigerants to check its accuracy. The thermal conductivity correlation for 14 refrigerants is estimated to have an uncertainty of about 3.0% at 95% confidence level. In addition, the performance of the present method was compared with that of previously reported models in the literature and the results indicate that the present model is generally superior to the conventional models with regard to accuracy.

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Format PDF

Pages : 139-149

Disponible

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    20 €

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Détails

  • Titre original : Modeling thermal conductivity of liquid hydrofluorocarbon, hydrofluoroolefin and hydrochlorofluoroolefin refrigerants.
  • Identifiant de la fiche : 30029909
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 140
  • Date d'édition : 08/2022
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2022.05.015
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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