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论文类型：期刊论文

发表时间：2013-04-03

发表刊物：HVAC&R RESEARCH

收录刊物：SCIE、EI、Scopus

卷号：19

期号：3

页面范围：268-282

ISSN号：1078-9669

摘要：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 chairarmrest-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.