The cooled air settles down within the lower part of the room, while the hot and humid air passes through the upper region of the room, sweeping out the heat and contaminants generated indoors.

• 被冷却的空气在房间的较下层稳定下来，当热湿空气经过过房间的上层区域的时候，排除出热量和室内产生的污染物。