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Document IIF

Revue des recherches expérimentales sur le transfert de chaleur de refroidissement des mélanges CO2-lubrifiants dans des tubes horizontaux à pression supercritique.

Experimental investigations on cooling heat transfer of CO2-lubricant mixtures in horizontal tubes at supercritical pressure: A review.

Auteurs : XU W., LI Y., WANG Y., ZHAO J., LI M., TIAN H.

Type d'article : Article de la RIF, Synthèse

Résumé

The presence of lubricating oil has been shown to have a significant effect on the heat transfer process of the CO2 gas cooler. Previous review work has not comprehensively summarized and discussed the effect of lubricating oil on supercritical carbon dioxide (sCO2) cooling heat transfer (CHT) in gas coolers. This study provides a comprehensive review of the effect of lubricants on the CHT of sCO2. This study aims to provide a good insight for evaluating the influence of lubricating oil on the heat transfer performance of gas coolers and provide a reference to guide the actual design and optimization of gas coolers for oil-entrained cases. In the present work, the effects of temperature, the type and concentration of oil, mass flux, operating pressure, tube diameter, and tube configuration on the CHT of sCO2-oil mixtures are explored in detail. The results show that the presence of lubricant contributes to the formation of oil films and droplets, thereby impairing heat transfer. Compared to oil droplets, the oil film has a more profound effect on weakening the heat transfer. Moreover, this paper also summarizes and evaluates the sCO2-oil mixture heat transfer correlations and presents the recommended correlations. Finally, given the limitations in existing studies, two future research directions are put forward: research on CHT of sCO2-oil mixtures under different heat fluxes and development of heat transfer correlations.

Documents disponibles

Format PDF

Pages : 168-179

Disponible

  • Prix public

    20 €

  • Prix membre*

    Gratuit

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Experimental investigations on cooling heat transfer of CO2-lubricant mixtures in horizontal tubes at supercritical pressure: A review.
  • Identifiant de la fiche : 30029825
  • Langues : Anglais
  • Sujet : Technologie
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 139
  • Date d'édition : 07/2022
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2022.04.004

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