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