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Dynamic model and experimental study of an air–water heat pump for residential use / R. N. N. Koury in International journal of refrigeration, Vol. 36 N° 3 (Mai 2013) 

Public ISBD [article]  in International journal of refrigeration > Vol. 36 N° 3 (Mai 2013) . - pp. 674–688 Titre : Dynamic model and experimental study of an air–water heat pump for residential use Titre original : Modéle dynamique et étude expérimentale sur une pompe á chaleur résidentielle air-eau Type de document : texte imprimé Auteurs : R. N. N. Koury, Auteur ; R.N. Faria, Auteur ; R. O. Nunes, Auteur Année de publication : 2013 Article en page(s) : pp. 674–688 Note générale : Refrigeration Langues : Anglais (eng) Mots-clés : Modelling;  Experimentation;  Heat  pump;  Domestic;  Hot  water Résumé : This paper presents a study of the dynamic behavior of a vapor compression heat pump for residential water heating. The mathematical models for heat exchangers are formulated by using mass, momentum, and energy conservation equations, while capillary tube model is based on the equations of conservation of momentum. The model is formulated from the manufacturer experimental data and the energy conservation balance. The contribution of this study to the field of dynamic modeling appears on the convergence of models of heat exchangers, this being accomplished with a variable error in spatial and time minimizing the instabilities in the calculation. The coupling among the four components allows the determination of the spatial and temporal profiles of temperatures, pressures and mass flow rates, as well as the refrigerant distribution in the heat exchangers during the water heating process. The validation of the model is done by comparison with the experimental results. En ligne : http://www.sciencedirect.com/science/article/pii/S0140700712003052 [article] Dynamic model and experimental study of an air–water heat pump for residential use = Modéle dynamique et étude expérimentale sur une pompe á chaleur résidentielle air-eau [texte imprimé] / R. N. N. Koury, Auteur ; R.N. Faria, Auteur ; R. O. Nunes, Auteur . - 2013 . - pp. 674–688. Refrigeration Langues : Anglais (eng) in International journal of refrigeration > Vol. 36 N° 3 (Mai 2013) . - pp. 674–688 Mots-clés : Modelling;  Experimentation;  Heat  pump;  Domestic;  Hot  water Résumé : This paper presents a study of the dynamic behavior of a vapor compression heat pump for residential water heating. The mathematical models for heat exchangers are formulated by using mass, momentum, and energy conservation equations, while capillary tube model is based on the equations of conservation of momentum. The model is formulated from the manufacturer experimental data and the energy conservation balance. The contribution of this study to the field of dynamic modeling appears on the convergence of models of heat exchangers, this being accomplished with a variable error in spatial and time minimizing the instabilities in the calculation. The coupling among the four components allows the determination of the spatial and temporal profiles of temperatures, pressures and mass flow rates, as well as the refrigerant distribution in the heat exchangers during the water heating process. The validation of the model is done by comparison with the experimental results. En ligne : http://www.sciencedirect.com/science/article/pii/S0140700712003052