| Title |
Evaluation of the Indoor Air Quality in Occupied Apartment Units after Remodeling |
| Authors |
Shim Hyun-Suk ; Choi Yoon-Jung |
| Keywords |
Apartment Units ; Remodeling ; Occupied ; IAQ(Indoor Air Quality) |
| Abstract |
The present aim of the study was to evaluate the conditions of indoor air quality, and to analyze the main influencing factors in occupied apartment units after remodeling. Field measurements were carried out in twenty apartment units, and measurement elements were CO2, CO, PM10, TVOC, HCHO. Moreover, resident interview and researcher observation took place to find out the remodeled contents, and the influencing factors. The results were summarized as follows. The average CO2 in each house were 683～2309 ppm, in which 14 houses exceeded the standard level(1000 ppm) at 70%. The average CO in each house were 0.2～6.1 ppm, way below the standard level(10 ppm). Average PM10 for each house were 0.8～74.8 ㎍/㎥, also below the standard level (100 ㎍/㎥). TVOC average per house were 0～0.3 ppm, in which 11 houses(55%) exceeding the standard level (0.1 ppm) for occupied building and 6 houses(30%) exceeding the standard level(0.58 ppm) for new-built apartment. Average HCHO per house were 0～1.0 ppm, 12 houses(60%) exceeding the standard level(0.1 ppm) for occupied building, and 10 houses(50%) exceeding the standard (0.17 ppm) for new-built apartment. Therefore, the contamination level for CO2, TVOC, and HCHO proved to be at a dangerous level. Influencing factors were classified as general factor, and living factor of measuring date. General factors were revealed as remodeling factor, and ventilation characteristics. Remodeling factor means remodeling amounts, as the level of remodeling amounts increased, the concentration level of HCHO on each houses also increased significantly. The level of TVOC and HCHO in most houses decreased by the date elapsed after remodeling and ventilation methods such as number of times and hours leaving the window open, and the use of bathroom fan, and kitchen hood. Living factors of measuring date were revealed as relative humidity, ventilation time, added remodeling activities, and living activities. |