In this study, thermodynamic performance of supplementary/retrofit refrigerant mixtures for CFC12 used in existing automobile air-conditioners was examined. A thermodynamic computer analysis of an automobile air-conditioner was carried out for the initial screening of possible mixture candidates, and refrigerant mixtures composed of HCFC22, HFC134a, HCFC142b, RE170 (dimethylether), HC290 (propane), and HC600a (iso-butane) were proposed to supplement CFC12. Also a breadboard type refrigeration test facility was manufactured to verify the perfomance of the alternative refrigerant mixtures proposed through the computer analysis. Test results showed that HFC134a/RE170 mixture with zero ozone depletion potential is the best long term candidate to supplement CFC12. On the other hand, HCFC22/HFC134a/RE170 and HCFC22/HFC134a/HCFC142b mixtures are good only as short term supplementary/retrofit alternatives since they contain HCFC22. A hydrocarbon mixture of HC290/HC600a showed a good performance but its use in existing automobile air-conditioners should be carefully considered due to its flammability.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Evaluation of supplementary/retrofit refrigerants for automobile air-conditioners charged with CFC12


    Contributors:
    Jung, D. (author) / Park, B. (author) / Lee, H. (author)

    Published in:

    Publication date :

    1999


    Size :

    11 Seiten, 8 Bilder, 5 Tabellen, 17 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




    Experience of Retrofitting Automotive Air-Conditioning from CFC12 to HFC134a

    Smith, A. M. / Greig, B. D. / Beggs, M. C. | SAE Technical Papers | 1993



    Recent Progress on Alternatives to CFC12 and HCFC22(2)

    Zhigang, L. / Jiangtao, W. / Shengkun, C. | British Library Online Contents | 2005



    RETROFIT AUTOMOBILE RADIO

    HARRINGTON STEVEN | European Patent Office | 2016

    Free access