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Exergy analysis and optimization of R600a as a replacement of R134a in a domestic refrigerator system / Mahmood Mastani Joybari in International journal of refrigeration, Vol. 36 N° 4 (Juin 2013) 

Public ISBD [article]  in International journal of refrigeration > Vol. 36 N° 4 (Juin 2013) . - pp. 1233–1242 Titre : Exergy analysis and optimization of R600a as a replacement of R134a in a domestic refrigerator system Titre original : Analyse exergétique et optimisation du R600a comme frigorigène de remplacement du R134a dans le système frigorifique d'un réfrigérateur domestique Type de document : texte imprimé Auteurs : Mahmood Mastani Joybari, Auteur ; Mohammad Sadegh Hatamipour, Auteur ; Amir Rahimi, Auteur Année de publication : 2013 Article en page(s) : pp. 1233–1242 Note générale : Refrigeration Langues : Anglais (eng) Mots-clés : Exergy  analysis;  Taguchi  experimental  design;  Domestic  refrigerator;  R134a;  R600a Résumé : Exergy analysis was applied to investigate the performance of a domestic refrigerator originally manufactured to use 145 g of R134a. It was found that the highest exergy destruction occurred in the compressor followed by the condenser, capillary tube, evaporator, and superheating coil. Taguchi method was applied to design experiments to minimize exergy destruction while using R600a. Taguchi parameters were selected by the obtained results from R134a and an experiment using 60 g of R600a, which indicated similar results as R134a. Based on the outcomes, R600a charge amount, condenser fan rotational velocity and compressor coefficient of performance were selected for the design. The analysis of variance results indicated that R600a charge amount was the most effective parameter. At the optimum condition, the amount of charge required for R600a was 50 g, 66% lower than R134a one, which not only brings economic advantages, but also significantly reduces the risk of flammability of the hydrocarbon refrigerant. En ligne : http://www.sciencedirect.com/science/article/pii/S0140700713000352 [article] Exergy analysis and optimization of R600a as a replacement of R134a in a domestic refrigerator system = Analyse exergétique et optimisation du R600a comme frigorigène de remplacement du R134a dans le système frigorifique d'un réfrigérateur domestique [texte imprimé] / Mahmood Mastani Joybari, Auteur ; Mohammad Sadegh Hatamipour, Auteur ; Amir Rahimi, Auteur . - 2013 . - pp. 1233–1242. Refrigeration Langues : Anglais (eng) in International journal of refrigeration > Vol. 36 N° 4 (Juin 2013) . - pp. 1233–1242 Mots-clés : Exergy  analysis;  Taguchi  experimental  design;  Domestic  refrigerator;  R134a;  R600a Résumé : Exergy analysis was applied to investigate the performance of a domestic refrigerator originally manufactured to use 145 g of R134a. It was found that the highest exergy destruction occurred in the compressor followed by the condenser, capillary tube, evaporator, and superheating coil. Taguchi method was applied to design experiments to minimize exergy destruction while using R600a. Taguchi parameters were selected by the obtained results from R134a and an experiment using 60 g of R600a, which indicated similar results as R134a. Based on the outcomes, R600a charge amount, condenser fan rotational velocity and compressor coefficient of performance were selected for the design. The analysis of variance results indicated that R600a charge amount was the most effective parameter. At the optimum condition, the amount of charge required for R600a was 50 g, 66% lower than R134a one, which not only brings economic advantages, but also significantly reduces the risk of flammability of the hydrocarbon refrigerant. En ligne : http://www.sciencedirect.com/science/article/pii/S0140700713000352