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Document IIF

Refroidissement des frigorigènes surchauffés en écoulement à l'intérieur de minicanaux et de microcanaux : étude de cas, avec le CO2, du transfert de chaleur et de la perte de charge.

Cooling of superheated refrigerants flowing inside mini and micro tubes: study of heat transfer and pressure drop, CO2 case study.

Auteurs : HAMMAD M., ALSHQIRATE A.

Résumé

Superheated carbon dioxide gas was subjected to a cooling process. Experimental investigation along with an analytical study were carried out in this work. This work is intended to be part of the super critical Gustav Lorentzen refrigeration cycle of CO2. Experimental and analytical works concentrated on heat transfer and pressure drop for single phase flow during gas cooling inside mini and micro tubes. Empirical correlations were formulated analytically for the coefficient of convectional heat transfer and for the pressure drop Correlations were validated against some experimental results and compared to all experimental results and other literature correlations; an agreement of more than 90% was noticed. This work can enhance the calculations of heat flux and pressure drop of gases flow inside mini and micro tubes. It can also help in the design procedure of heat exchangers and cooling processes.

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Pages : 2010-2

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Détails

  • Titre original : Cooling of superheated refrigerants flowing inside mini and micro tubes: study of heat transfer and pressure drop, CO2 case study.
  • Identifiant de la fiche : 2010-1747
  • Langues : Anglais
  • Source : 9th IIR-Gustav Lorentzen Conference on Natural Working Fluids (GL2010). Proceedings. Sydney, Australia, April 12-14, 2010.
  • Date d'édition : 12/04/2010

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