Automotive air conditioning compressor produces an annular-mist flow consisting of gas-phase refrigerant flow with oil film and oil droplets. This paper reports a method to calculate the oil retention and oil circulation ratio based on oil film thickness, wave speed, oil droplet size, oil droplet speed, and mass flow rate. Oil flow parameters are measured by high-speed camera capture and video processing in a non-invasive way. The estimated oil retention and oil circulation ratio results are compared quantitatively with the measurements from system experiments under different compressor outlet gas superficial velocity. The agreement between video result and sampling measurement shows that this method can be applied in other annular-mist flow analysis. It is also shown that most of the oil exists in film from the mass point of view while oil droplets contributes more to the oil mass flow rate because they travel in a much higher speed.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Refrigerant-Oil Flow at the Compressor Discharge


    Additional title:

    Sae Technical Papers


    Contributors:
    Xu, Jiu (author) / Hrnjak, Predrag (author)

    Conference:

    SAE 2016 World Congress and Exhibition ; 2016



    Publication date :

    2016-04-05




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    REFRIGERANT COMPRESSOR

    European Patent Office | 2018

    Free access

    REFRIGERANT COMPRESSOR

    BENNEK GERHARD / GUTBERLET DIRK / AYAR AYHAN | European Patent Office | 2017

    Free access

    REFRIGERANT COMPRESSOR

    SETT CHRISTIAN / KLOTTEN THOMAS | European Patent Office | 2023

    Free access

    REFRIGERANT COMPRESSOR

    IWASHITA HIROAKI | European Patent Office | 2018

    Free access

    MUTLI-COMPRESSOR REFRIGERANT SYSTEM

    HE JING / LOHMEYER LOREN JOHN / KOBERSTEIN MANFRED et al. | European Patent Office | 2021

    Free access