Documents disponibles écrits par cet auteur

Partialization losses of ON/OFF operation of water-to-water refrigeration/heat-pump units / J. M. Corberán in International journal of refrigeration, Vol. 36 N° 8 (Décembre 2013) 

Public ISBD [article]  in International journal of refrigeration > Vol. 36 N° 8 (Décembre 2013) . - pp. 2251–2261 Titre : Partialization losses of ON/OFF operation of water-to-water refrigeration/heat-pump units Titre original : Pertes de partialisation lors du fonctionnement “tout-ou-rien” des systèmes frigorifiques eau-eau /pompes à chaleur Type de document : texte imprimé Auteurs : J. M. Corberán, Auteur ; D. Donadello, Auteur ; I. Martínez-Galván, Auteur Année de publication : 2014 Article en page(s) : pp. 2251–2261 Note générale : Refrigeration Langues : Anglais (eng) Mots-clés : Part  load  operation;  heat  pump  performance;  partialization  losses;  COP Résumé : This paper presents the results of an experimental campaign for the characterization of the dynamic behavior of a water-to-water refrigeration/heat-pump unit under ON/OFF operation. The unit was previously tested at different water inlet temperatures under steady state conditions, and a very good agreement was found between the instantaneous dynamic performance of the heat pump and the corresponding quasi-steady state operation. In parallel, a series of tests were carried out to quantify the coefficient of performance (COP) degradation as a function of the load ratio, and a simple formula for the Part Load Factor is presented. Results lead to the conclusion that the only non-negligible factor in the COP degradation is the stand-by electrical consumption during the OFF period, especially at low load ratios. Finally, it is concluded that the minimization of the stand-by consumption is a key point for the future improvement of the seasonal performance of water-to-water systems. En ligne : http://www.sciencedirect.com/science/article/pii/S0140700713001667 [article] Partialization losses of ON/OFF operation of water-to-water refrigeration/heat-pump units = Pertes de partialisation lors du fonctionnement “tout-ou-rien” des systèmes frigorifiques eau-eau /pompes à chaleur [texte imprimé] / J. M. Corberán, Auteur ; D. Donadello, Auteur ; I. Martínez-Galván, Auteur . - 2014 . - pp. 2251–2261. Refrigeration Langues : Anglais (eng) in International journal of refrigeration > Vol. 36 N° 8 (Décembre 2013) . - pp. 2251–2261 Mots-clés : Part  load  operation;  heat  pump  performance;  partialization  losses;  COP Résumé : This paper presents the results of an experimental campaign for the characterization of the dynamic behavior of a water-to-water refrigeration/heat-pump unit under ON/OFF operation. The unit was previously tested at different water inlet temperatures under steady state conditions, and a very good agreement was found between the instantaneous dynamic performance of the heat pump and the corresponding quasi-steady state operation. In parallel, a series of tests were carried out to quantify the coefficient of performance (COP) degradation as a function of the load ratio, and a simple formula for the Part Load Factor is presented. Results lead to the conclusion that the only non-negligible factor in the COP degradation is the stand-by electrical consumption during the OFF period, especially at low load ratios. Finally, it is concluded that the minimization of the stand-by consumption is a key point for the future improvement of the seasonal performance of water-to-water systems. En ligne : http://www.sciencedirect.com/science/article/pii/S0140700713001667

Sizing of a reversible magnetic heat pump for the automotive industry / B. Torregrosa-Jaime in International journal of refrigeration, Vol. 37 N° 1 (Janvier 2014) 

Public ISBD [article]  in International journal of refrigeration > Vol. 37 N° 1 (Janvier 2014) . - pp. 156–164 Titre : Sizing of a reversible magnetic heat pump for the automotive industry Titre original : Dimensionnement d'une pompe à chaleur magnétique réversible pour l'industrie automobile Type de document : texte imprimé Auteurs : B. Torregrosa-Jaime, Auteur ; J. M. Corberán, Auteur ; C. Vasile, Auteur Année de publication : 2014 Article en page(s) : pp. 156–164 Note générale : Refrigeration Langues : Anglais (eng) Mots-clés : Magnetic  refrigerator;  heat  pump;  automobile;  air  conditioning;  modelling Résumé : This paper focuses on the design of an innovative air-conditioning system, namely a magnetocaloric air-conditioner for an electric minibus. An integrated design of the complete system is necessary, as the hot and cold side of the regenerator will work under dynamic conditions which depend on the instantaneous thermal load in the cabin. In order to assist the design of the system, a dynamic model has been developed for the cabin, the hydraulic loops and heat exchangers, and the magnetocaloric unit. This paper presents (i) a description of the dynamic models, (ii) an analysis of the operating conditions of the magnetocaloric unit and (iii) a discussion on the design of the magnetocaloric air-conditioner. The results show that the electric minibus requests 1.60 kW of cooling power over a span of 37 K in cooling mode, and 3.39 kW of heating power over a span of 40 K. En ligne : http://www.sciencedirect.com/science/article/pii/S0140700713001771 [article] Sizing of a reversible magnetic heat pump for the automotive industry = Dimensionnement d'une pompe à chaleur magnétique réversible pour l'industrie automobile [texte imprimé] / B. Torregrosa-Jaime, Auteur ; J. M. Corberán, Auteur ; C. Vasile, Auteur . - 2014 . - pp. 156–164. Refrigeration Langues : Anglais (eng) in International journal of refrigeration > Vol. 37 N° 1 (Janvier 2014) . - pp. 156–164 Mots-clés : Magnetic  refrigerator;  heat  pump;  automobile;  air  conditioning;  modelling Résumé : This paper focuses on the design of an innovative air-conditioning system, namely a magnetocaloric air-conditioner for an electric minibus. An integrated design of the complete system is necessary, as the hot and cold side of the regenerator will work under dynamic conditions which depend on the instantaneous thermal load in the cabin. In order to assist the design of the system, a dynamic model has been developed for the cabin, the hydraulic loops and heat exchangers, and the magnetocaloric unit. This paper presents (i) a description of the dynamic models, (ii) an analysis of the operating conditions of the magnetocaloric unit and (iii) a discussion on the design of the magnetocaloric air-conditioner. The results show that the electric minibus requests 1.60 kW of cooling power over a span of 37 K in cooling mode, and 3.39 kW of heating power over a span of 40 K. En ligne : http://www.sciencedirect.com/science/article/pii/S0140700713001771