Can a photocatalytic air purifier be used to improve the perceived air quality indoors?
Can a photocatalytic air purifier be used to improve the perceived air quality indoors?
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DOI：
10.1111/j.1600-0668.2010.00650.x
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发表时间：
2010-06-01
期刊：
影响因子：
5.8
通讯作者：
Wargocki, P.
中科院分区：
文献类型：
--
作者：
Kolarik, J.;Wargocki, P.
在典型室内污染源污染的房间中，研究了光催化空气净化器对感知空气质量（PAQ）的影响。这些房间以三种不同的室外送风率通风。空气质量由一个感应面板评估，当净化器在运行和关闭时。该净化器的运行显著改善了被建筑材料（旧地毯、旧油毡和旧刨花板）、旧通风过滤器以及建筑材料、旧通风过滤器和阴极射线管计算机显示器混合污染的房间的PAQ。这种效果相当于室外送风率大约增加一倍。该净化器的运行显著恶化了人类生物污水房间的PAQ，可能是由于人类排放的主要污染物之一醇的不完全氧化。目前的研究结果表明，光催化空气净化器可以在室内空气受到建筑相关污染源污染时起到补充通风的作用，但不宜用于以人类生物污水为主要污染源的空间。实际意义目前的结果表明，光催化空气净化器可以补充通风，当室内空气主要是由建筑相关的来源污染，例如在工作时间外，通风大大减少或关闭，污染物积聚和吸附在室内表面无人居住的建筑物。结果还表明，当人类存在并构成主要污染源时，应避免使用光催化空气净化器。
P>The effect of a photocatalytic air purifier on perceived air quality (PAQ) was examined in rooms polluted by typical sources of indoor pollution. The rooms were ventilated at three different outdoor air supply rates. The air quality was assessed by a sensory panel when the purifier was in operation as well as when it was off. Operation of the purifier significantly improved PAQ in the rooms polluted by building materials (used carpet, old linoleum, and old chipboard), and a used ventilation filter as well as a mixture of building materials, used ventilation filter and cathode-ray tube computer monitors. The effect corresponded to approximately doubling the outdoor air supply rate. Operation of the purifier significantly worsened the PAQ in rooms with human bioeffluents, probably due to incomplete oxidation of alcohols which are one of the main pollutants emitted by humans. Present results show that the photocatalytic air purifier can supplement ventilation when the indoor air is polluted by building-related sources, but should not be used in spaces where human bioeffluents constitute the main source of pollution.Practical ImplicationsThe present results suggest that a photocatalytic air purifier can supplement ventilation when the indoor air is polluted mainly by building-related sources, for example in unoccupied buildings outside working hours when ventilation is considerably reduced or turned off and pollutants build up and adsorb on indoor surfaces. The results also suggest that use of a photocatalytic air purifier should be avoided when humans are present and constitute main source of pollution.