Airplanes currently distribute conditioned air by overhead diffusers or personal gaspers to the passenger cabin. Such an air distribution mode promotes air mixing; therefore, it has low ventilation efficiency and may impose considerable risks of draft to the passengers. To remedy the above problems, an under-aisle displacement air distribution mode and a personal air distribution mode are proposed. The under-aisle air mode supplies conditioned air from perforated panels in the aisles, whereas the personalized air mode applies the under-aisle air mode as background ventilation and simultaneously supplies outdoor conditioned air from the chair–armrest-embedded terminals to the passenger's inhalation region. To evaluate the three air distribution modes, a twin-aisle aircraft cabin mockup with a Boeing 767 as the prototype is constructed. The airflow pattern and temperature profiles are measured by a three-dimensional ultrasonic anemometer, and the ventilation efficiency is evaluated by the CO2 tracer gas concentration. This study finds that the personalized air distribution mode coupled with the under-aisle air supply as the background ventilation is promising to improve the current cabin environment. Unstable airflows are ubiquitous on airplanes and require advanced test instruments for better characterization.


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    Titel :

    Various air distribution modes on commercial airplanes. Part 1: Experimental measurement


    Beteiligte:
    Zhang, Tengfei- (Autor:in) / Li, Penghui (Autor:in) / Zhao, Yue (Autor:in) / Wang, Shugang (Autor:in)


    Erscheinungsdatum :

    2013


    Format / Umfang :

    15 Seiten




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch





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