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An experimental study of the flow of R-407C in an adiabatic helical capillary tube / M.K. Mittal in International journal of refrigeration, Vol. 33 N° 4 (Juin 2010) 

Public ISBD [article]  in International journal of refrigeration > Vol. 33 N° 4 (Juin 2010) . - pp. 840-847 Titre : An experimental study of the flow of R-407C in an adiabatic helical capillary tube Titre original : Etude expérimentale sur l‘écoulement du R-407C dans un tube capillaire adiabatique hélicoïdal Type de document : texte imprimé Auteurs : M.K. Mittal, Auteur ; Ravi Kumar, Auteur ; Akhilesh Gupta, Auteur Année de publication : 2010 Article en page(s) : pp. 840-847 Note générale : Génie Mécanique Langues : Anglais (eng) Mots-clés : Helical  tube  Capillary  Experiment  Flow  R-407C  Correlation  Flow Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : This paper presents an experimental investigation of coiling effect on the flow of R-407C in an adiabatic helical capillary tube. It has been observed that the coiling of capillary tube significantly influences the mass flow rate of R-407C through the adiabatic helical capillary tube. For the sake of comparison, the experiments have also been conducted for straight capillary tube and it has been observed that the mass flow rates in coiled capillary tube are 5–10 percent less than those in a straight one. The data obtained from the experiments have been analyzed and non-dimensional correlations for the prediction of mass flow rate of R-407C in straight and helical capillary tube have been developed. The proposed correlations predict our experimental data in an error band of ±10 percent. The predictions by developed correlations are also in good agreement with the data of other investigators. DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700710000034 [article] An experimental study of the flow of R-407C in an adiabatic helical capillary tube = Etude expérimentale sur l‘écoulement du R-407C dans un tube capillaire adiabatique hélicoïdal [texte imprimé] / M.K. Mittal, Auteur ; Ravi Kumar, Auteur ; Akhilesh Gupta, Auteur . - 2010 . - pp. 840-847. Génie Mécanique Langues : Anglais (eng) in International journal of refrigeration > Vol. 33 N° 4 (Juin 2010) . - pp. 840-847 Mots-clés : Helical  tube  Capillary  Experiment  Flow  R-407C  Correlation  Flow Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : This paper presents an experimental investigation of coiling effect on the flow of R-407C in an adiabatic helical capillary tube. It has been observed that the coiling of capillary tube significantly influences the mass flow rate of R-407C through the adiabatic helical capillary tube. For the sake of comparison, the experiments have also been conducted for straight capillary tube and it has been observed that the mass flow rates in coiled capillary tube are 5–10 percent less than those in a straight one. The data obtained from the experiments have been analyzed and non-dimensional correlations for the prediction of mass flow rate of R-407C in straight and helical capillary tube have been developed. The proposed correlations predict our experimental data in an error band of ±10 percent. The predictions by developed correlations are also in good agreement with the data of other investigators. DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700710000034