Measurement of indoor air quality for ventilation with the existence of occupants in schools

Shin, Hyun-Suk; Lee, Jai-Kwon; Ahn, Young-Chull; Yeo, Chang-Shin; Byun, Sang-Hyun; Lee, Jae-Keun; Kang, Tae-Wook; Lee, Kam-Gyu; Park, Hyo-Soon

doi:10.1007/bf02919183

Cited by 6 publications

(4 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For example, building age and shape have impact on the air tightness of the building envelope and thus the exchange of indoor and outdoor air pollutants 39‐42 . Room type, school period, and outdoor heat may alter the ventilation practices and affect the infiltration of outdoor air pollutants 16,43‐46 . The former two are also related to occupants’ activities, which may affect the intensity of indoor sources together with chalkboard use and floor materials 24,47‐49 .…”

Section: Methodsmentioning

confidence: 99%

Factors affecting variability in gaseous and particle microenvironmental air pollutant concentrations in Hong Kong primary and secondary schools

Che

Frey

et al. 2020

Indoor Air

View full text Add to dashboard Cite

School‐age children are particularly susceptible to exposure to air pollutants. To quantify factors affecting children's exposure at school, indoor and outdoor microenvironmental air pollutant concentrations were measured at 32 selected primary and secondary schools in Hong Kong. Real‐time PM10, PM2.5, NO2, and O3 concentrations were measured in 76 classrooms and 23 non‐classrooms. Potential explanatory factors related to building characteristics, ventilation practice, and occupant activities were measured or recorded. Their relationship with indoor measured concentrations was examined using mixed linear regression models. Ten factors were significantly associated with indoor microenvironmental concentrations, together accounting for 74%, 61%, 46%, and 38% of variations observed for PM2.5, PM10, O3, and NO2 microenvironmental concentrations, respectively. Outdoor concentration is the single largest predictor for indoor concentrations. Infiltrated outdoor air pollution contributes to 90%, 70%, 75%, and 50% of PM2.5, PM10, O3, and NO2 microenvironmental concentrations, respectively, in classrooms during school hours. Interventions to reduce indoor microenvironmental concentrations can be prioritized in reducing ambient air pollution and infiltration of outdoor pollution. Infiltration factors derived from linear regression models provide useful information on outdoor infiltration and help address the gap in generalizable parameter values that can be used to predict school microenvironmental concentrations.

show abstract

Section: Methodsmentioning

confidence: 99%

Factors affecting variability in gaseous and particle microenvironmental air pollutant concentrations in Hong Kong primary and secondary schools

Che

Frey

et al. 2020

Indoor Air

View full text Add to dashboard Cite

show abstract

“…Health problems related to poor IAQ can be simple eye irritation or a sense of fatigue. However, poor IAQ leads to the spread of colds, flu, or even more grievous infections (Kim et al 2015, Shin et al 2005, Park et al 2008. Apart from health problems, it has been shown that poor IAQ in schools has an effect on learning performance, which is the primary reason for students to inhabit this type of environment.…”

Section: Introductionmentioning

confidence: 99%

Indoor Air Quality Performance of Ventilation Systems in Classrooms

Moon

Sohn

2016

Journal of Asian Architecture and Building Engineering

View full text Add to dashboard Cite

This study aims to evaluate the field performance and the efficiency of ventilation systems in school buildings. Three classrooms installed with ventilation systems in a high school in Seoul were selected as a test bed for this study. The ventilation systems consisted of two types of multi air-conditioning ventilation system and a window type air-conditioning ventilation system. The ventilation performance was measured by the blower door and tracer gas methods as follows: (1) Evaluation of air tightness and air infiltration in the classrooms; (2) Indoor ventilation performance based on the operating condition of ventilation systems; (3) Ventilation performance based on the operating conditions of ventilation systems and air-conditioners; and (4) Local ventilation efficiency and performance based on the operating status of the ventilation systems and air-conditioners.As a result, the ventilation efficiency was measured at 34.8%-97.8% for the duct type of ventilation and 82.6% for the window type ventilation. In this study, classroom characteristics such as high air infiltration low air tightness lowered the ventilation effectiveness. The ventilation efficiency varied based on the location of air inlet and outlet ducts and the existence of furniture. However, local ventilation efficiency was not significantly affected according to the results of this study. The results showed that a ventilation rate of 1000 cubic meters per hour (CMH) or more would be required to maintain 1000 ppm of CO 2 concentrations as per IAQ criteria for Korean classrooms.

show abstract

“…Recently in Korea, it has been emphasized that maintaining high quality of indoor environment is important for health and safety of occupants in the building. Many studies have also reported the importance of IAQ management and ventilation (Shin et al, 2005;Hwang et al, 2006;Ryu et al, 2009;Park, 2010;Lee et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Effect of Mechanical Ventilation System on Improvement of Indoor Air Quality in A Newly Built Apartment and B Department Store

Park¹,

Lee²,

Kim³

2014

Journal of Korean Society of Occupational and Environmental Hyg

View full text Add to dashboard Cite

Measurement of indoor air quality for ventilation with the existence of occupants in schools

Cited by 6 publications

References 3 publications

Factors affecting variability in gaseous and particle microenvironmental air pollutant concentrations in Hong Kong primary and secondary schools

Factors affecting variability in gaseous and particle microenvironmental air pollutant concentrations in Hong Kong primary and secondary schools

Indoor Air Quality Performance of Ventilation Systems in Classrooms

Effect of Mechanical Ventilation System on Improvement of Indoor Air Quality in A Newly Built Apartment and B Department Store

Contact Info

Product

Resources

About