Documents disponibles écrits par cet auteur

Development of an optimization strategy for insulation thickness of a domestic refrigerator-freezer / Won Jae Yoon in International journal of refrigeration, Vol. 36 N° 3 (Mai 2013) 

Public ISBD [article]  in International journal of refrigeration > Vol. 36 N° 3 (Mai 2013) . - pp. 1162–1172 Titre : Development of an optimization strategy for insulation thickness of a domestic refrigerator-freezer Titre original : Développement d'une stratégie d'optimisation de l'épaisseur de l'isolation à l'intérieur d'un réfrigérateur / congélateur domestique Type de document : texte imprimé Auteurs : Won Jae Yoon, Auteur ; Kookjeong Seo, Auteur ; Yongchan Kim, Auteur Année de publication : 2013 Article en page(s) : pp. 1162–1172 Note générale : Refrigeration Langues : Anglais (eng) Mots-clés : Insulation;  Efficiency;  Performance;  Optimization;  Household  refrigerator Résumé : The optimization of insulation thickness is very important to increase the performance of domestic refrigerator-freezers (RFs) because of its strong dependency on the heat load through polyurethane-insulated compartments. However, it is very difficult to find the optimum insulation thickness to allow minimum energy consumption at the arbitrarily given COP and internal volume of each compartment. In this study, the optimization process for the insulation thickness was proposed to improve the energy efficiency of a total RF system. This process included the quantitative relationships between the COP and the insulation thickness of each compartment. In addition, the effects of the proposed optimization strategy on the performance of RF were investigated in the bypass two-circuit cycle and the dual-loop cycle. As a result, the energy consumptions of the bypass two-circuit cycle and the dual-loop cycle were reduced by 5.7% and 6.1%, respectively, by applying the proposed optimization strategy. En ligne : http://www.sciencedirect.com/science/article/pii/S014070071200312X [article] Development of an optimization strategy for insulation thickness of a domestic refrigerator-freezer = Développement d'une stratégie d'optimisation de l'épaisseur de l'isolation à l'intérieur d'un réfrigérateur / congélateur domestique [texte imprimé] / Won Jae Yoon, Auteur ; Kookjeong Seo, Auteur ; Yongchan Kim, Auteur . - 2013 . - pp. 1162–1172. Refrigeration Langues : Anglais (eng) in International journal of refrigeration > Vol. 36 N° 3 (Mai 2013) . - pp. 1162–1172 Mots-clés : Insulation;  Efficiency;  Performance;  Optimization;  Household  refrigerator Résumé : The optimization of insulation thickness is very important to increase the performance of domestic refrigerator-freezers (RFs) because of its strong dependency on the heat load through polyurethane-insulated compartments. However, it is very difficult to find the optimum insulation thickness to allow minimum energy consumption at the arbitrarily given COP and internal volume of each compartment. In this study, the optimization process for the insulation thickness was proposed to improve the energy efficiency of a total RF system. This process included the quantitative relationships between the COP and the insulation thickness of each compartment. In addition, the effects of the proposed optimization strategy on the performance of RF were investigated in the bypass two-circuit cycle and the dual-loop cycle. As a result, the energy consumptions of the bypass two-circuit cycle and the dual-loop cycle were reduced by 5.7% and 6.1%, respectively, by applying the proposed optimization strategy. En ligne : http://www.sciencedirect.com/science/article/pii/S014070071200312X

Performance optimization of a Lorenz–Meutzner cycle charged with hydrocarbon mixtures for a domestic refrigerator-freezer / Won Jae Yoon in International journal of refrigeration, Vol. 35 N° 1 (Janvier 2012) 

Public ISBD [article]  in International journal of refrigeration > Vol. 35 N° 1 (Janvier 2012) . - pp. 36–46 Titre : Performance optimization of a Lorenz–Meutzner cycle charged with hydrocarbon mixtures for a domestic refrigerator-freezer Titre original : Réfrigérateur-congélateur domestique à cycle Lorenz-Meutzner, chargé avec un mélange d'hydrocarbures: Optimisation de la performance Type de document : texte imprimé Auteurs : Won Jae Yoon, Auteur ; Kookjeong Seo, Auteur ; Hyun Joon Chung, Auteur Année de publication : 2012 Article en page(s) : pp. 36–46 Note générale : Génie mécanique Langues : Anglais (eng) Mots-clés : Hydrocarbon  Non-azeotropic  mixture  Performance  Optimization  Household  refrigerator Résumé : A Lorenz–Meutzner cycle (called the “LM cycle”) for a domestic refrigerator-freezer (RF) has energy saving potential because of lower entropy generation in the fresh food compartment (R)-evaporator and lower compression ratio due to higher mean evaporating temperature, compared to a conventional cycle using pure refrigerant. In this study, a thermodynamic analysis for the optimum compositions of hydrocarbon (HC) mixtures and cycle specifications was performed. In addition, the effects of the refrigerant charge, capillary tube, compressor capacity, and mixture composition on the performance of the LM cycle using R-290/R-600 were investigated experimentally. Based on the experimental data, the energy consumption of the optimized LM cycle using R-290/R-600 (40:60%) was 11.2% lower than that of a bypass two-circuit cycle using R-600a in the same RF platform. ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700711002301 [article] Performance optimization of a Lorenz–Meutzner cycle charged with hydrocarbon mixtures for a domestic refrigerator-freezer = Réfrigérateur-congélateur domestique à cycle Lorenz-Meutzner, chargé avec un mélange d'hydrocarbures: Optimisation de la performance [texte imprimé] / Won Jae Yoon, Auteur ; Kookjeong Seo, Auteur ; Hyun Joon Chung, Auteur . - 2012 . - pp. 36–46. Génie mécanique Langues : Anglais (eng) in International journal of refrigeration > Vol. 35 N° 1 (Janvier 2012) . - pp. 36–46 Mots-clés : Hydrocarbon  Non-azeotropic  mixture  Performance  Optimization  Household  refrigerator Résumé : A Lorenz–Meutzner cycle (called the “LM cycle”) for a domestic refrigerator-freezer (RF) has energy saving potential because of lower entropy generation in the fresh food compartment (R)-evaporator and lower compression ratio due to higher mean evaporating temperature, compared to a conventional cycle using pure refrigerant. In this study, a thermodynamic analysis for the optimum compositions of hydrocarbon (HC) mixtures and cycle specifications was performed. In addition, the effects of the refrigerant charge, capillary tube, compressor capacity, and mixture composition on the performance of the LM cycle using R-290/R-600 were investigated experimentally. Based on the experimental data, the energy consumption of the optimized LM cycle using R-290/R-600 (40:60%) was 11.2% lower than that of a bypass two-circuit cycle using R-600a in the same RF platform. ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700711002301

Performance optimization of a two-circuit cycle with parallel evaporators for a domestic refrigerator–freezer / Won Jae Yoon in International journal of refrigeration, Vol. 34 N° 1 (Janvier 2011) 

Public ISBD [article]  in International journal of refrigeration > Vol. 34 N° 1 (Janvier 2011) . - pp. 216-224 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 Auteurs : Won Jae Yoon, Auteur ; Hae Won Jung, Auteur ; Hyun Joon Chung, Auteur Année de publication : 2011 Article en page(s) : pp. 216-224 Note générale : Génie Mécanique Langues : Anglais (eng) Mots-clés : Household  refrigerator  Parallel  flow  Cycle  Performance  Optimization Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération 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. DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700710002136 [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] / Won Jae Yoon, Auteur ; Hae Won Jung, Auteur ; Hyun Joon Chung, Auteur . - 2011 . - pp. 216-224. Génie Mécanique Langues : Anglais (eng) in International journal of refrigeration > Vol. 34 N° 1 (Janvier 2011) . - pp. 216-224 Mots-clés : Household  refrigerator  Parallel  flow  Cycle  Performance  Optimization Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération 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. DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700710002136