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Comparative performance of an automotive air conditioning system using fixed and variable capacity compressors / Alpaslan Alkan in International journal of refrigeration, Vol. 33 N° 3 (Mai 2010) 

Public ISBD [article]  in International journal of refrigeration > Vol. 33 N° 3 (Mai 2010) . - pp. 487-495 Titre : Comparative performance of an automotive air conditioning system using fixed and variable capacity compressors Titre original : Evaluation comparative de la performance des systèmes de conditionnement d'air automobiles aux compresseurs à vitesse fixe ou variable Type de document : texte imprimé Auteurs : Alpaslan Alkan, Auteur ; Murat Hosoz, Auteur Année de publication : 2010 Article en page(s) : pp. 487-495 Note générale : Génie Mécanique Langues : Anglais (eng) Mots-clés : Air  conditioning  Automobile  Review  Performance  Variable  speed  Compressor Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : This study investigates the experimental performance of an automotive air conditioning (AAC) system for the cases of employing fixed and variable capacity compressors (FCC and VCC). For this aim, an experimental system consisting of original components from an HFC134a AAC system has been set up and instrumented. For each compressor case, the system has been tested under steady-state operating conditions by varying the compressor speed, temperatures of the air streams entering the condenser and evaporator as well as the velocities of these air streams. The energy and exergy analysis has been applied to the experimental system, and its performance for both compressor operations has been evaluated. The results show that the operation with the VCC usually yields a higher COP than the operation with the FCC in expense of a lower cooling capacity. Furthermore, the cooling capacity and the rate of total exergy destruction in the VCC operations remain almost constant after a certain compressor speed, while both parameters increase continually with the compressor speed in the FCC operations. DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700709003132 [article] Comparative performance of an automotive air conditioning system using fixed and variable capacity compressors = Evaluation comparative de la performance des systèmes de conditionnement d'air automobiles aux compresseurs à vitesse fixe ou variable [texte imprimé] / Alpaslan Alkan, Auteur ; Murat Hosoz, Auteur . - 2010 . - pp. 487-495. Génie Mécanique Langues : Anglais (eng) in International journal of refrigeration > Vol. 33 N° 3 (Mai 2010) . - pp. 487-495 Mots-clés : Air  conditioning  Automobile  Review  Performance  Variable  speed  Compressor Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : This study investigates the experimental performance of an automotive air conditioning (AAC) system for the cases of employing fixed and variable capacity compressors (FCC and VCC). For this aim, an experimental system consisting of original components from an HFC134a AAC system has been set up and instrumented. For each compressor case, the system has been tested under steady-state operating conditions by varying the compressor speed, temperatures of the air streams entering the condenser and evaporator as well as the velocities of these air streams. The energy and exergy analysis has been applied to the experimental system, and its performance for both compressor operations has been evaluated. The results show that the operation with the VCC usually yields a higher COP than the operation with the FCC in expense of a lower cooling capacity. Furthermore, the cooling capacity and the rate of total exergy destruction in the VCC operations remain almost constant after a certain compressor speed, while both parameters increase continually with the compressor speed in the FCC operations. DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700709003132