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Evaluation of Outdoor Particle Infiltration into Classrooms Considering Air Leakage and Other Building Characteristics in Korean Schools

Department of Architectural Engineering, Graduate School, University of Seoul, Seoul 02504, Korea
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Academic Editor: Giouli Mihalakakou
Sustainability 2021, 13(13), 7382; https://doi.org/10.3390/su13137382
Received: 15 April 2021 / Revised: 5 June 2021 / Accepted: 22 June 2021 / Published: 1 July 2021
(This article belongs to the Special Issue Air Circulation and Indoor Air Quality)
We analyzed the effects of air leakage and other building characteristics on outdoor particle penetration in classrooms. The building characteristics including air leakage of 12 Korean schools were investigated, and onsite measurements were conducted to estimate the outdoor particle infiltration. The correlations among variables associated with air leakage and building characteristics and outdoor particle infiltration were analyzed using the Pearson correlation analysis and linear regression. The effective leakage area (ELA) of classrooms varied highly from 340.8–1566.9 cm2, and a significant disparity in the air leakage characteristics among the classrooms appeared. The results of onsite measurement revealed that the average ELA was larger in the corridor side with an ELAcorridor-side of 264.7 cm2 than in the outdoor side (ELAoutdoor-side of 93.1 cm2). Results of correlation analysis indicated a high correlation (r = 0.68~0.78, p-value < 0.05) between the size resolved outdoor particle source (P × λ) and specific ELA. Particularly, a strong linear relation (R2 = 0.69~0.71) with specific ELAcorridor-side was seen. Results suggest that cracks between windows and doors in the corridor side considerably affect outdoor particle penetration. These results indicate the importance of improving the airtightness of not only the building envelope but also the inter-zonal walls for effectively reducing the outdoor particle infiltration into classrooms. View Full-Text
Keywords: outdoor particle infiltration; air leakage; blower-door test; school classroom; pearson correlation; regression analysis outdoor particle infiltration; air leakage; blower-door test; school classroom; pearson correlation; regression analysis
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MDPI and ACS Style

Eom, Y.S.; Park, B.R.; Shin, H.W.; Kang, D.H. Evaluation of Outdoor Particle Infiltration into Classrooms Considering Air Leakage and Other Building Characteristics in Korean Schools. Sustainability 2021, 13, 7382. https://doi.org/10.3390/su13137382

AMA Style

Eom YS, Park BR, Shin HW, Kang DH. Evaluation of Outdoor Particle Infiltration into Classrooms Considering Air Leakage and Other Building Characteristics in Korean Schools. Sustainability. 2021; 13(13):7382. https://doi.org/10.3390/su13137382

Chicago/Turabian Style

Eom, Ye S., Bo R. Park, Hee W. Shin, and Dong H. Kang. 2021. "Evaluation of Outdoor Particle Infiltration into Classrooms Considering Air Leakage and Other Building Characteristics in Korean Schools" Sustainability 13, no. 13: 7382. https://doi.org/10.3390/su13137382

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