This paper describes the performance of a transcritical R744 a/c system for a typical compact car. The prototype was designed to have heat exchanger dimensions, face velocities and air-side pressure drops nearly identical to conventional R134a systems. Heat exchangers are made of flat aluminum extruded multiport tubes; the 21 cc compressor is of swash plate design, and the system can be controlled by either a needle valve or a backpressure valve.Test matrices are defined for the purpose of developing component and system simulation models, as well as supporting data-to-data comparisons at normal, seasonal and extreme operating conditions. The design of experiments and test facility are also discussed. Results are presented for the R744 system operating in both steady state and cycling modes.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Performance of the Prototype of a Transcritical R744 Mobile A/C System


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Yin, J. M. (Autor:in) / Hrnjak, P. S. (Autor:in) / McEnaney, Ryan P. (Autor:in) / Park, Y. C. (Autor:in)

    Kongress:

    International Congress & Exposition ; 1999



    Erscheinungsdatum :

    01.03.1999




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Performance of the Prototype of a Transcritical R744 Mobile A/C System

    McEnaney, R. P. / Park, Y. C. / Yin, J. M. et al. | British Library Conference Proceedings | 1999


    Performance of the prototype of a transcritical R744 mobile a/c system

    McEnaney,R. / Park,Y.C. / Yin,J.M. et al. | Kraftfahrwesen | 1999


    Control Strategies for Transcritical R744 Systems

    McEnaney, R. P. / Hrnjak, P. S. / Society of Automotive Engineers | British Library Conference Proceedings | 2000


    Control Strategies for Transcritical R744 Systems

    Hrnjak, P. S. / McEnaney, R. P. | SAE Technical Papers | 2000


    Control strategies for transcritical R744 systems

    McEnaney,R.P. / Hrnjak,P.S. / Univ.of Illinois,Chicago,US | Kraftfahrwesen | 2000