旅客机座舱空气质量关系到机组成员和乘客的安全、健康和舒适；座舱内空间狭小，人员密集，空气质量与地面建筑环境不同。针对旅客机的座舱环境，提出了基于纳米光催化的新型座舱空气净化系统；与传统的高效过滤器/活性炭复合净化装置相比，纳米光催化装置全寿命期费用非常低，不仅能控制座舱内挥发性有机污染物，还能净化座舱内的微生物，有助于旅客机环境控制系统减小新风量，节省能耗，降低飞机成本。

The airliner cabin air quality is related to the safety, health and comfort of passengers and cabin crew. Considering the unique cabin environment, a new cabin air purifier system based on nanophotocatalytic oxidation is described. A detailed performance comparison has been made between the photocatalytic oxidation reactor and the carbon adsorption/high efficiency particulate arresting filters for airliner cabin. The life-cycle costs for carbon adsorption/high efficiency particulate arresting filters are significantly higher than that for photocatalytic oxidation reactor. It also indicates that photocatalytic oxidation reactor can not only control the level of volatile organic compounds but also purify airborne bioaersols. These characteristics can help to decrease the replenishment of fresh air, save the power and reduce airliner cost.