服装热阻、空气温度及气流速度是影响人体热舒适性的三个主要因素。
Dress heat resistance, air temperature and air speed are the three main factors affecting thermal comfort.
排风口位置的变化，对下层气流速度场、温度场以及烟气浓度场不产生影响，对热力分层高度、工作区垂直温度分布等热舒适性问题没有影响。
Air outlet position didn't influence the air flow field temperature field, concentration field, heat lamination height and vertical distribution of temperature of work area.
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