—This study investigates the indoor pollutant levels
in school buildings according to the operation of mechanical
ventilation system. Three classrooms at two different
elementary schools and four classrooms at two children’s day
care center in Korea were chosen for investigation of indoor air
quality with mechanical ventilation systems. Measurements
were conducted for particulate matter, formaldehyde, total
volatile organic compounds, carbon monoxide, carbon dioxide,
nitrogen dioxide, ozone, radon, and total bacteria counts.
Differences in indoor pollutants concentrations with and
without operation of ventilation systems in each classroom were
analyzed. The results show that operation of ventilation systems
could decrease the levels of indoor pollutants in the classrooms,
especially showing the reduction of HCHO concentrations by
—Day care centers, elementary schools, indoor
air quality, ventilation system.
The authors are with the Department of Architectural Engineering,
Dankook University, Yongin-si 448-701, Republic of Korea (e-mail:
firstname.lastname@example.org, email@example.com, firstname.lastname@example.org).
Cite: Hyeun Jun Moon, Seung Ho Ryu, and Jeong Tai Kim, "Investigation of IAQ in Mechanically Ventilated
Kindergartens and Elementary Schools in Korea," International Journal of Engineering and Technology vol. 7, no. 5, pp. 382-385, 2015.