Re-design of the thermostatic expansion valve (TXV) was necessary for the efficient use of GFC-134a refrigerant in mobile air conditioning applications. Laboratory work demonstrated the need for changing both valve characteristics and inside design. The use of the new expansion valve resulted in low HFC-134a system discharge pressures with either the serpentine or 'proprietary' multiflow condensers. Vehicular wind tunnel and road tests both showed the HFC-134a A/C system to have better cooling performance and similar discharge pressures at less refrigerant charge than the conventional CFC-12 system, when using the new expansion valve and multiflow condenser.


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    Titel :

    Performance evaluation of an automotive air conditioner with expansion valve control using CFC-12 & GFC-134a refrigerants


    Weitere Titelangaben:

    Leistungsbewertung einer Kfz-Klimaanlage mit Entspannungsventil-Kontrolle bei Nutzung der CFC-12 und HFC 134a Kältemittel


    Beteiligte:
    El-Bourini, R. (Autor:in) / Adachi, T. (Autor:in) / Tajima, K (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    1991


    Format / Umfang :

    8 Seiten, 17 Bilder, 4 Tabellen, 3 Quellen



    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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    Tajima, Katsuichiro / El-Bourini, Refki / Adachi, Tsunenari | SAE Technical Papers | 1991


    Refrigerants CFC-12/HFC-134a and Submarine Atmosphere Control

    McCarrick, Alan D. / Nickens, Anthony D. / Jastrzebski, Stanley A. et al. | SAE Technical Papers | 1993


    Automotive air conditioner and expansion valve

    HAYAKAWA SATOSHI / YAMAMOTO AKIHIKO / SUGAMURA RYOUTA et al. | Europäisches Patentamt | 2017

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    A Design of the Block Type Expansion Valve in Automotive Air Conditioning System using HFC-134a Refrigerant

    Kim, K. H. / Kim, W. S. / Korean Society of Automotive Engineers | British Library Conference Proceedings | 2005


    Thermal Flow Analysis of HFC-134a MFC Condenser for Automotive Air-Conditioner

    Hyun, Lee Kyu / Pil, Won Jong | SAE Technical Papers | 1997