Abstract
The clean air delivery rates (CADR) has been used as an air cleaner's performance evaluation index. This index has been used to determine the removal performance of air cleaners. The present research has bees investigating the changes in formaldehyde removal performance of domestic air cleaners for a decade, and has improved the precision of our predictions of indoor pollutant concentration. The CADR of domestic air cleaners for formaldehyde ranged from 0 to 97.9 [m^3/h] and that for VOC's ranged from 50.9 to 215 [m^3/h]. The performance of these air cleaners has greatly improved since 1995. The correspondence rate between measured and predicted formaldehyde concentration varied between 76.6 and 99.9 [%], and for VOC's between 66.7 and 92.7 [%].
