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Cycling losses in refrigeration equipment: An experimental evaluation / Giacomo Bagarella 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. 2111–2118 Titre : Cycling losses in refrigeration equipment: An experimental evaluation Titre original : Pertes lors du cyclage dans les équipements frigorifiques: une évaluation expérimentale Type de document : texte imprimé Auteurs : Giacomo Bagarella, Auteur ; Renato M. Lazzarin, Auteur ; Biagio Lamanna, Auteur Année de publication : 2014 Article en page(s) : pp. 2111–2118 Note générale : Refrigeration Langues : Anglais (eng) Mots-clés : Cycling  losses;  on–off;  modulation;  refrigeration;  thermostatic  expansion  valve;  electronic  Expansion  Valve Résumé : Cycling losses may be defined as those inefficiencies that reduce the performances of units during the transient period. They may be quantified by comparing the Energy Efficiency Ratio (EER) of a cycling unit and the EER of the same unit working continuously. The on-off control is the most widespread strategy for modulating; therefore, a reliable evaluation of cycling losses is fundamental to assess the EER of the system. The mentioned losses have been experimentally evaluated on a test rig, and logged data demonstrate a loss up to 13% with respect to steady operations when the load factor is lower than 10% and a Thermostatic Expansion Valve (TEV) is used. The insertion of a solenoid valve in series with the TEV can reduce the losses but the best results are obtained by using the Electronic Expansion Valve (EEV) instead of the TEV. En ligne : http://www.sciencedirect.com/science/article/pii/S0140700713001989 [article] Cycling losses in refrigeration equipment: An experimental evaluation = Pertes lors du cyclage dans les équipements frigorifiques: une évaluation expérimentale [texte imprimé] / Giacomo Bagarella, Auteur ; Renato M. Lazzarin, Auteur ; Biagio Lamanna, Auteur . - 2014 . - pp. 2111–2118. Refrigeration Langues : Anglais (eng) in International journal of refrigeration > Vol. 36 N° 8 (Décembre 2013) . - pp. 2111–2118 Mots-clés : Cycling  losses;  on–off;  modulation;  refrigeration;  thermostatic  expansion  valve;  electronic  Expansion  Valve Résumé : Cycling losses may be defined as those inefficiencies that reduce the performances of units during the transient period. They may be quantified by comparing the Energy Efficiency Ratio (EER) of a cycling unit and the EER of the same unit working continuously. The on-off control is the most widespread strategy for modulating; therefore, a reliable evaluation of cycling losses is fundamental to assess the EER of the system. The mentioned losses have been experimentally evaluated on a test rig, and logged data demonstrate a loss up to 13% with respect to steady operations when the load factor is lower than 10% and a Thermostatic Expansion Valve (TEV) is used. The insertion of a solenoid valve in series with the TEV can reduce the losses but the best results are obtained by using the Electronic Expansion Valve (EEV) instead of the TEV. En ligne : http://www.sciencedirect.com/science/article/pii/S0140700713001989