OPEN ACCESS

Articles online

Infiltration of Ambient PM2.5 through Building Envelope in Apartment Housing Units in Korea

Category: Indoor Air Quality

Volume: 17 | Issue: 2 | Pages: 598-607
DOI: 10.4209/aaqr.2016.06.0287
PDF | RIS | BibTeX

Dong Hee Choi1, Dong Hwa Kang 2

  • 1 Department of Architectural Engineering, College of Engineering, Kyungil University, Gyeongbuk 38428, Korea
  • 2 Department of Architectural Engineering, College of Urban Sciences, University of Seoul, Seoul 02504, Korea

Highlights

The infiltration of ambient PM2.5 in apartment housing units was investigated.
The on-site test method by using a blower-door depressurization was suggested.
The infiltration tests were conducted in 11 apartment housing units.
A leaky housing units would be significantly influenced by ambient PM2.5.


Abstract

Air pollution due to PM2.5 is of public concern in Korea. Ambient PM2.5 can penetrate indoors through the building envelope, affecting the indoor PM2.5 concentrations. Most people stay indoors for approximately 80% of every day, implying that their primary exposure to PM2.5 could be determined by the indoor air. This study aims to investigate the infiltration of ambient PM2.5 through the building envelop in apartment housing units in Korea. The on-site infiltration test method, by using a blower-door depressurization procedure, was suggested in order to maintain an identical indoor-outdoor pressure difference among the tests. On-site experiments were conducted in 11 apartment housing units to estimate the PM2.5 infiltration factors. The results showed that the average infiltration factor of all the test housing units was 0.65 ± 0.13 (average ± standard deviation), with a minimum of 0.38 and a maximum of 0.88. Furthermore, the results from the relation of the building airtightness data to the infiltration factors suggests that a leaky housing unit with high ACH50, or a high specific effective leakage area (ELA), would be more significantly influenced by the ambient PM2.5. The study demonstrated that the suggested infiltration test procedure was useful to assess the infiltration factors in conditions of controlled indoor-outdoor pressure differences in real housing units.

Keywords

PM2.5 Infiltration Building envelope Apartment housing unit Indoor air quality Blower-door testing


Related Article

A Simulation Study on PM2.5 Sources and Meteorological Characteristics at the Northern tip of Taiwan in the Early Stage of the Asian Haze Period

Ming-Tung Chuang , Charles C.-K. Chou, Neng-Huei Lin, Akinori Takami, Ta-Chi Hsiao, Tang-Huang Lin, Joshua S. Fu, Shantanu Kumar Pani, Yun-Ru Lu, Tsung-Yeh Yang

Source Apportionment of PM2.5 Particles: Influence of Outdoor Particles on Indoor Environment of Schools Using Chemical Mass Balance

Gopinath Kalaiarasan, Raj Mohan Balakrishnan , Neethu Anitha Sethunath, Sivamoorthy Manoharan
Volume: 17 | Issue: 2 | Pages: 616-625
DOI: 10.4209/aaqr.2016.07.0297
PDF | Supplemental material

Characteristics of Exposure to Particles due to Incense Burning inside Temples in Kanpur, India

Anubha Goel , Roshan Wathore, Tirthankar Chakraborty, Manish Agrawa
Volume: 17 | Issue: 2 | Pages: 608-615
DOI: 10.4209/aaqr.2016.04.0146
PDF | Supplemental material
;