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Performance optimization of a two-circuit cycle with parallel evaporators for a domestic refrigerator–freezer in Revue internationale du froid, vol 34, issue 1 (janvier 2011)
[article]
Titre : Performance optimization of a two-circuit cycle with parallel evaporators for a domestic refrigerator–freezer Titre original : Optimisation de la performance d'un cycle à deux circuits muni d'évaporateurs parallèles pour un réfrigérateur/congélateur domestique Type de document : texte imprimé Année de publication : 2012 Article en page(s) : pp. 216-224 Langues : Anglais (eng) Français (fre) Catégories : 621.5 : Technique pneumatique, du vide, des basses températures Mots-clés : Réfrigérateur domestique; Écoulement parallèle; Cycle; Performance; Optimisation Index. décimale : 621.56 Technique des basses températures : réfrigération, pompe à chaleur Résumé : A two-circuit cycle with parallel evaporators (called a “parallel cycle”) for a domestic refrigerator–freezer (RF) shows energy saving potential compared with a conventional cycle with a single loop or serial evaporators because of a low compression ratio in the fresh food compartment (R)-operation. The objective of this study is to investigate the effects of the refrigerant charge, R-capillary tube, and refrigerant recovery operation on the performance of a parallel cycle. In addition, design guidelines for the heat transfer area and air flow rate of an R-evaporator are proposed. When the parallel cycle was optimized in terms of the refrigerant charge and R-capillary tube diameter, the energy consumption was reduced by 7.8% over a bypass two-circuit cycle with the same RF platform. In addition, an additional energy saving of 1.8% was obtained by the optimization of the operating sequence and refrigerant recovery operation.
in Revue internationale du froid > vol 34, issue 1 (janvier 2011) . - pp. 216-224[article] Performance optimization of a two-circuit cycle with parallel evaporators for a domestic refrigerator–freezer = Optimisation de la performance d'un cycle à deux circuits muni d'évaporateurs parallèles pour un réfrigérateur/congélateur domestique [texte imprimé] . - 2012 . - pp. 216-224.
Langues : Anglais (eng) Français (fre)
in Revue internationale du froid > vol 34, issue 1 (janvier 2011) . - pp. 216-224
Catégories : 621.5 : Technique pneumatique, du vide, des basses températures Mots-clés : Réfrigérateur domestique; Écoulement parallèle; Cycle; Performance; Optimisation Index. décimale : 621.56 Technique des basses températures : réfrigération, pompe à chaleur Résumé : A two-circuit cycle with parallel evaporators (called a “parallel cycle”) for a domestic refrigerator–freezer (RF) shows energy saving potential compared with a conventional cycle with a single loop or serial evaporators because of a low compression ratio in the fresh food compartment (R)-operation. The objective of this study is to investigate the effects of the refrigerant charge, R-capillary tube, and refrigerant recovery operation on the performance of a parallel cycle. In addition, design guidelines for the heat transfer area and air flow rate of an R-evaporator are proposed. When the parallel cycle was optimized in terms of the refrigerant charge and R-capillary tube diameter, the energy consumption was reduced by 7.8% over a bypass two-circuit cycle with the same RF platform. In addition, an additional energy saving of 1.8% was obtained by the optimization of the operating sequence and refrigerant recovery operation.