Documents disponibles écrits par cet auteur

Performance evaluation and optimal design of supermarket refrigeration systems with supermarket model “SuperSim”, Part I: Model description and validation / Y.T. Ge in International journal of refrigeration, Vol. 34 N° 2 (Mars 2011) 

Public ISBD [article]  in International journal of refrigeration > Vol. 34 N° 2 (Mars 2011) . - pp. 527-539 Titre : Performance evaluation and optimal design of supermarket refrigeration systems with supermarket model “SuperSim”, Part I: Model description and validation Titre original : Evaluation de la performance et conception optimale de systèmes frigorifiques pour supermarchés à l'aide du modèle ≪ SuperSim ≫. Partie I : description et validation du modèle Type de document : texte imprimé Auteurs : Y.T. Ge, Auteur ; S.A. Tassou, Auteur Année de publication : 2011 Article en page(s) : pp. 527-539 Note générale : Génie Mécanique Langues : Anglais (eng) Mots-clés : Supermarket  Refrigeration  system  Energy  consumption  Modelling  Validation Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : Conventional supermarket refrigeration systems are responsible for considerable CO2 emissions due to high energy consumption and large quantities of refrigerant leakage. In the effort to conserve energy and reduce environmental impacts, an efficient design tool for the analysis, evaluation and comparison of the performance of alternative system designs and controls is required. This paper provides a description of the modelling procedure employed in the supermarket simulation model ‘SuperSim’ for the simulation of the performance of centralised vapour compression refrigeration systems and their interaction with the building envelope and HVAC systems. The model which has been validated against data from a supermarket has been used for the comparison of R404A and CO2 refrigeration systems and the optimisation of the performance of transcritical CO2 systems. These results are presented in Part II of the paper. DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700710002719 [article] Performance evaluation and optimal design of supermarket refrigeration systems with supermarket model “SuperSim”, Part I: Model description and validation = Evaluation de la performance et conception optimale de systèmes frigorifiques pour supermarchés à l'aide du modèle ≪ SuperSim ≫. Partie I : description et validation du modèle [texte imprimé] / Y.T. Ge, Auteur ; S.A. Tassou, Auteur . - 2011 . - pp. 527-539. Génie Mécanique Langues : Anglais (eng) in International journal of refrigeration > Vol. 34 N° 2 (Mars 2011) . - pp. 527-539 Mots-clés : Supermarket  Refrigeration  system  Energy  consumption  Modelling  Validation Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : Conventional supermarket refrigeration systems are responsible for considerable CO2 emissions due to high energy consumption and large quantities of refrigerant leakage. In the effort to conserve energy and reduce environmental impacts, an efficient design tool for the analysis, evaluation and comparison of the performance of alternative system designs and controls is required. This paper provides a description of the modelling procedure employed in the supermarket simulation model ‘SuperSim’ for the simulation of the performance of centralised vapour compression refrigeration systems and their interaction with the building envelope and HVAC systems. The model which has been validated against data from a supermarket has been used for the comparison of R404A and CO2 refrigeration systems and the optimisation of the performance of transcritical CO2 systems. These results are presented in Part II of the paper. DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700710002719

Performance evaluation and optimal design of supermarket refrigeration systems with supermarket model “SuperSim”. Part II: Model applications / Y.T. Ge in International journal of refrigeration, Vol. 34 N° 2 (Mars 2011) 

Public ISBD [article]  in International journal of refrigeration > Vol. 34 N° 2 (Mars 2011) . - pp. 540-549 Titre : Performance evaluation and optimal design of supermarket refrigeration systems with supermarket model “SuperSim”. Part II: Model applications Titre original : Evaluation de la performance et conception optimale de systèmes frigorifiques pour supermarchés à l'aide du modèle ≪ SuperSim ≫. Partie II : applications du modèle Type de document : texte imprimé Auteurs : Y.T. Ge, Auteur ; S.A. Tassou, Auteur Année de publication : 2011 Article en page(s) : pp. 540-549 Note générale : Génie Mécanique Langues : Anglais (eng) Mots-clés : Supermarket  Model  Carbon  dioxide  R404A  Control  Comparison Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : As described in Part I, the supermarket simulation software “SuperSim” with its integrated refrigeration, building and HVAC system models, can be used to evaluate, compare and optimize alternative supermarket refrigeration systems. In Part II the model was used to evaluate and compare the performance of a CO2 booster refrigeration system with that of a conventional R404A multiplex system in a supermarket application. Floating head pressure control was implemented for both systems when they were in subcritical cycles. For the CO2 system, when the system was in transcritical cycle due to higher ambient air temperature, the head pressure was optimized through extensive thermodynamic cycle analysis as a function of ambient air temperature. The performance of the CO2 booster system in the supermarket was then simulated during a one year period and compared with that of the R404A system. As a result, the system performance will benefit from a lower ambient temperature and a sizeable heat recovery for the CO2 system. DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://acatalogue_2.biblio.intranet.enp.edu.dz/catalog.php?categ=serials&sub=ana [...] [article] Performance evaluation and optimal design of supermarket refrigeration systems with supermarket model “SuperSim”. Part II: Model applications = Evaluation de la performance et conception optimale de systèmes frigorifiques pour supermarchés à l'aide du modèle ≪ SuperSim ≫. Partie II : applications du modèle [texte imprimé] / Y.T. Ge, Auteur ; S.A. Tassou, Auteur . - 2011 . - pp. 540-549. Génie Mécanique Langues : Anglais (eng) in International journal of refrigeration > Vol. 34 N° 2 (Mars 2011) . - pp. 540-549 Mots-clés : Supermarket  Model  Carbon  dioxide  R404A  Control  Comparison Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : As described in Part I, the supermarket simulation software “SuperSim” with its integrated refrigeration, building and HVAC system models, can be used to evaluate, compare and optimize alternative supermarket refrigeration systems. In Part II the model was used to evaluate and compare the performance of a CO2 booster refrigeration system with that of a conventional R404A multiplex system in a supermarket application. Floating head pressure control was implemented for both systems when they were in subcritical cycles. For the CO2 system, when the system was in transcritical cycle due to higher ambient air temperature, the head pressure was optimized through extensive thermodynamic cycle analysis as a function of ambient air temperature. The performance of the CO2 booster system in the supermarket was then simulated during a one year period and compared with that of the R404A system. As a result, the system performance will benefit from a lower ambient temperature and a sizeable heat recovery for the CO2 system. DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://acatalogue_2.biblio.intranet.enp.edu.dz/catalog.php?categ=serials&sub=ana [...]

The impact of geometric structure and flow arrangement on the performance of CO2 evaporators in multi-deck medium temperature display cabinets / Y.T. Ge 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. 142–149 Titre : The impact of geometric structure and flow arrangement on the performance of CO2 evaporators in multi-deck medium temperature display cabinets Titre original : L'impact de la structure géométrique et la configuration de l'écoulement sur la performance des évaporateurs au CO2 dans les meubles frigorifiques de vente polyétagés Type de document : texte imprimé Auteurs : Y.T. Ge, Auteur ; S.A. Tassou, Auteur Année de publication : 2012 Article en page(s) : pp. 142–149 Note générale : Génie mécanique Langues : Anglais (eng) Mots-clés : Carbon  dioxide  Display  cabinets  Evaporators  Modelling  Design  Optimization Résumé : The CO2 refrigerant is widely applied in retail refrigeration systems to replace HFC fluids such as R404A, but its system performance requires further improvement. One feasible method would be to pinpoint the matching components of the system, in particular its evaporator coils. This paper focuses on the potential optimization of the CO2 evaporator design in an existing multi-deck medium temperature display cabinet charged previously with R404A refrigerant. To achieve this target, a display cabinet model with an integrated CFD and detailed evaporator sub models was utilized. This model could readily imitate the actual cabinet performance under varied operating conditions and component designs. Various design options of the CO2 cabinet evaporator were considered and their impacts on the cabinet performances were predicted by the integrated model. Ultimately, the optimized designs of CO2 cabinet evaporator coil geometries and refrigerant side operating parameters have been attained. ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700711002234 [article] The impact of geometric structure and flow arrangement on the performance of CO2 evaporators in multi-deck medium temperature display cabinets = L'impact de la structure géométrique et la configuration de l'écoulement sur la performance des évaporateurs au CO2 dans les meubles frigorifiques de vente polyétagés [texte imprimé] / Y.T. Ge, Auteur ; S.A. Tassou, Auteur . - 2012 . - pp. 142–149. Génie mécanique Langues : Anglais (eng) in International journal of refrigeration > Vol. 35 N° 1 (Janvier 2012) . - pp. 142–149 Mots-clés : Carbon  dioxide  Display  cabinets  Evaporators  Modelling  Design  Optimization Résumé : The CO2 refrigerant is widely applied in retail refrigeration systems to replace HFC fluids such as R404A, but its system performance requires further improvement. One feasible method would be to pinpoint the matching components of the system, in particular its evaporator coils. This paper focuses on the potential optimization of the CO2 evaporator design in an existing multi-deck medium temperature display cabinet charged previously with R404A refrigerant. To achieve this target, a display cabinet model with an integrated CFD and detailed evaporator sub models was utilized. This model could readily imitate the actual cabinet performance under varied operating conditions and component designs. Various design options of the CO2 cabinet evaporator were considered and their impacts on the cabinet performances were predicted by the integrated model. Ultimately, the optimized designs of CO2 cabinet evaporator coil geometries and refrigerant side operating parameters have been attained. ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700711002234