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Numerical simulation and experimental analysis of refrigerants flow through adiabatic helical capillary tube / Masoud Zareh in International journal of refrigeration, Vol. 38 (Février 2014) 

Public ISBD [article]  in International journal of refrigeration > Vol. 38 (Février 2014) . - pp. 299–309 Titre : Numerical simulation and experimental analysis of refrigerants flow through adiabatic helical capillary tube Titre original : Simulation numérique et analyse expérimentale de l'écoulement de frigorigènes dans un tube capillaire hélicoïdal adiabatique Type de document : texte imprimé Auteurs : Masoud Zareh, Auteur ; Hossien Shokouhmand, Auteur ; Mohammad Reza Salimpour, Auteur Année de publication : 2014 Article en page(s) : pp. 299–309 Note générale : Refrigeration Langues : Anglais (eng) Mots-clés : Refrigeration;  Drift  flux  model;  Adiabatic  helical  capillary  tube;  Experimental Résumé : In the present study, two-phase refrigerant flow is simulated using drift flux model for straight and helical capillary tubes. The conservation equations of mass, energy and momentum are solved using the 4th order Runge–Kutta method. This model is validated by previously published experimental and numerical results and also by experimental results presented in this work. The effect of various parameters such as inlet pressure, inlet temperature, sub-cooling degree, and geometric dimensions are studied. The results of the present study show that for the same length and under similar conditions, mass flux through helical capillary tube with coil diameter of 40 mm are about 11% less than that through the straight tube, where the helical tube length is about 14% shorter than the straight one for the same refrigerant mass flux. En ligne : http://www.sciencedirect.com/science/article/pii/S0140700713002156 [article] Numerical simulation and experimental analysis of refrigerants flow through adiabatic helical capillary tube = Simulation numérique et analyse expérimentale de l'écoulement de frigorigènes dans un tube capillaire hélicoïdal adiabatique [texte imprimé] / Masoud Zareh, Auteur ; Hossien Shokouhmand, Auteur ; Mohammad Reza Salimpour, Auteur . - 2014 . - pp. 299–309. Refrigeration Langues : Anglais (eng) in International journal of refrigeration > Vol. 38 (Février 2014) . - pp. 299–309 Mots-clés : Refrigeration;  Drift  flux  model;  Adiabatic  helical  capillary  tube;  Experimental Résumé : In the present study, two-phase refrigerant flow is simulated using drift flux model for straight and helical capillary tubes. The conservation equations of mass, energy and momentum are solved using the 4th order Runge–Kutta method. This model is validated by previously published experimental and numerical results and also by experimental results presented in this work. The effect of various parameters such as inlet pressure, inlet temperature, sub-cooling degree, and geometric dimensions are studied. The results of the present study show that for the same length and under similar conditions, mass flux through helical capillary tube with coil diameter of 40 mm are about 11% less than that through the straight tube, where the helical tube length is about 14% shorter than the straight one for the same refrigerant mass flux. En ligne : http://www.sciencedirect.com/science/article/pii/S0140700713002156