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首页> 外文期刊>Building and Environment >A personal air distribution system with air terminals embedded in chair armrests on commercial airplanes
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A personal air distribution system with air terminals embedded in chair armrests on commercial airplanes

机译：在商用飞机的座椅扶手中嵌入空气终端的个人空气分配系统

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摘要

A mixing air distribution system is currently used on airplanes, which supplies cool air at high momentum from the ceiling level and extracts the contaminated air at the deck level. However, such highly mixing context has led to numerous complaints not just for air quality but also for thermal comfort. To improve aircraft cabin environment, this investigation has proposed a personal chair-armrest-embedded air system. The system delivers conditioned, outside air directly to the breathing zone of a passenger from the air terminal devices embedded within both chair armrests. While simultaneously, a part of outside air mixed together with most of the recirculated air is supplied from the perforated under-aisle panels, and the contaminated air is extracted through the overhead exhausts on the ceiling. To assure thermal comfort, the personal air is conditioned to 25 ℃ in relative humidity of either 15% or 30%, so the cabin is mainly cooled down by the air supplied from the under-aisle panels. After elaborate investigation with experimental test and computational fluid dynamics (CFD) modeling, this study finds that by combining the under-aisle air supply with the personal air supply at the chair armrests, the system is robust to prevent the contaminants released at any height to the passenger's breathing region. Though there is vertical temperature stratification, the system is acceptable in perspective of percent dissatisfied due to draught risk. To aid for personal air system design, some optimal basic parameters are recommended.
机译：当前在飞机上使用混合空气分配系统，该系统从天花板高度以高动量供应冷空气，并在甲板高度提取受污染的空气。但是，这种高度混合的环境不仅导致空气质量，而且导致热舒适性引起了无数抱怨。为了改善飞机机舱环境，本次调查提出了一种内置个人椅子的扶手空气系统。该系统从两个椅子扶手中嵌入的空气终端设备将经过调节的外部空气直接输送到乘客的呼吸区域。同时，从穿孔的过道下面板供应一部分与大多数再循环空气混合在一起的外部空气，并通过天花板上的顶部排气将被污染的空气抽出。为了确保热舒适，将个人空气的相对湿度调节为25℃（15％或30％），因此，机舱主要由过道下面板供应的空气冷却。经过对实验测试和计算流体力学（CFD）建模的详尽研究，该研究发现，通过将过道下的空气供应与椅子扶手上的个人空气供应相结合，该系统非常坚固，可以防止污染物从任何高度释放到乘客的呼吸区域。尽管存在垂直温度分层，但从通风风险引起的不满意百分比的角度来看，该系统还是可以接受的。为了帮助个人空气系统设计，建议一些最佳的基本参数。

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