Ozone Generation from Air Cleaners and Control Factors of Indoor Ozone Concentration.

概要

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The amounts of ozone generated from air cleaners were determined for 14 air cleaners that were available on the market. Elimination rates of ozone were also measured after the air cleaners stopped. Ozone generation was observed from some electrostatic precipitation system. These generation rates varied from 316 to 5100μl/hour. Seasonal variation of ozone generation rates, degeneration of ozone by deodorant filter and correlation between ozone generation rates and voltages on the ionizer were investigated using several air cleaners that generated ozone considerably. Ozone concentrations were measured in chamber and actual rooms, and the results were compared with each other. The results obtained were as follows; ozone generation rates in summer was lower than that of winter. Deodorant filter could degrade ozone. The ionizer that have negative potential generated much more ozone rather than that have positive potential.<BR>Ozone concentration in actual rooms were significantly lower than that in chamber when the air cleaner worked on. Ozone elimination rates in actual rooms were also higher than that in chamber after the air cleaner stopped, because ozone could react various chemicals in actual rooms. Ozone concentration, however, exceeded 60 ppb (the environmental quality standard of ozone in Japan) in actual rooms when the air cleaner that had highest generation rate of ozone was used.
日本環境化学会の論文