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Experimental investigation of air distribution in an airliner cabin mockup with displacement ventilation

机译：归气通风的班机舱样机空气分布试验研究

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摘要

The commercial airliner cabin environment is very important for passengers and crew, and airflow and contaminant concentration distributions in cabins play a key role in creating a comfortable and healthy cabin environment. To study the airflow and the contaminant concentration distributions in airliner cabins, this investigation used a seven-row aircraft cabin mockup with well-controlled thermo-fluid boundary conditions. This study measured air temperature and velocity distributions with displacement ventilation by using T-type thermocouples and ultrasonic anemometers (UA), and contaminant distributions by using tracer gas and particle from a generator to simulate contaminant breathed out by a passenger. This paper discusses our effort to control the thermo-fluid boundary conditions with high accuracy. The measured results show that the air temperature was stratified and the air velocity was low. The contaminant was not transported to the other side of the cabin by the displacement ventilation system and was removed effectively through the ceiling exhaust. The Richardson number (Ri) indicated that the airflow was dominated by natural convection. However, the vertical temperature stratification may create discomfort for passengers.
机译：商业客机舱内环境对于乘客和船员来说非常重要，舱室里的气流和污染物浓度分布在创造舒适健康的客舱环境方面发挥着关键作用。为了研究客机舱室的气流和污染物浓度分布，这次调查使用了具有良好控制的热流体边界条件的七排飞机机舱样机。本研究通过使用T型热电偶和超声波风管（UA）测量具有位移通气的空气温度和速度分布，以及通过使用示踪剂气体和来自发电机的颗粒来模拟由乘客呼吸的污染物的污染物分布。本文讨论了我们努力以高精度控制热流体边界条件。测量结果表明，空气温度分层，空气速度低。污染物未通过位移通风系统运输到驾驶室的另一侧，并通过天花板排气有效地除去。 Richardson号码（RI）表示气流由自然对流占主导地位。然而，垂直温度分层可能会为乘客产生不适。

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  • 来源
    《Building and Environment》 |2021年第3期|107577.1-107577.11|共11页
  • 作者

    Liu Mingxin; Chang Di; Liu Junjie; Ji Shengcheng; Lin Chao-Hsin; Wei Daniel; Long Zhengwei; Zhang Tengfei; Shen Xiong; Cao Qing; Li Xingyang; Zeng Xiaojing; Li Hanyu;

  • 作者单位

    Tianjin Univ Sch Environm Sci & Engn Tianjin Key Lab Indoor Air Environm Qual Control Tianjin 300072 Peoples R China;

    Tianjin Univ Sch Environm Sci & Engn Tianjin Key Lab Indoor Air Environm Qual Control Tianjin 300072 Peoples R China;

    Tianjin Univ Sch Environm Sci & Engn Tianjin Key Lab Indoor Air Environm Qual Control Tianjin 300072 Peoples R China;

    Beijing Aeronaut Sci & Technol Res Inst COMAC Beijing Peoples R China;

    Boeing Commercial Airplanes Environm Control Syst Everett WA 98203 USA;

    Boeing Res & Technol Beijing 100027 Peoples R China;

    Tianjin Univ Sch Environm Sci & Engn Tianjin Key Lab Indoor Air Environm Qual Control Tianjin 300072 Peoples R China;

    Tianjin Univ Sch Environm Sci & Engn Tianjin Key Lab Indoor Air Environm Qual Control Tianjin 300072 Peoples R China;

    Tianjin Univ Sch Environm Sci & Engn Tianjin Key Lab Indoor Air Environm Qual Control Tianjin 300072 Peoples R China;

    Dalian Univ Technol DUT Sch Civil Engn 2 Linggong Rd Dalian 116024 Peoples R China;

    Tianjin Univ Sch Environm Sci & Engn Tianjin Key Lab Indoor Air Environm Qual Control Tianjin 300072 Peoples R China;

    Tianjin Univ Sch Environm Sci & Engn Tianjin Key Lab Indoor Air Environm Qual Control Tianjin 300072 Peoples R China;

    Tianjin Univ Sch Environm Sci & Engn Tianjin Key Lab Indoor Air Environm Qual Control Tianjin 300072 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Airliner cabin; Airflow; Contaminant concentration distributions; Displacement ventilation; Local thermal comfort;

    机译：客机舱;气流;污染物浓度分布;位移通风;局部热舒适;

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