Filtration efficiency and ventilation performance of window screen filters
Efficient natural ventilation is an important approach to maintaining indoor air quality. However, owing to the increasing concentration of outdoor particulate matter (PM), natural ventilation without filtration results in the introduction of outdoor particles in buildings, thus increasing indoor ex...
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| Veröffentlicht in: | Building and environment 2020-07, Vol.178, p.106878, Article 106878 |
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| creator | Kang, Kyungmo Kim, Taeyeon Shin, Cheol Woong Kim, Kichul Kim, Jiwoong Lee, Yun Gyu |
| description | Efficient natural ventilation is an important approach to maintaining indoor air quality. However, owing to the increasing concentration of outdoor particulate matter (PM), natural ventilation without filtration results in the introduction of outdoor particles in buildings, thus increasing indoor exposure to PM. Indoor PM concentration is determined by the particle removal efficiency of window screen filters. In this study, using an experimental chamber and an actual building, the particle removal performance of window screen filters was evaluated for their potential application. To investigate the relationship between the outdoor and indoor concentrations of particles with diameter size ≤ 2.5 μm (PM2.5), and to evaluate the efficiency of the window screen filters in removing such particles, the window screen filters were installed in a full-scale test room. The results obtained showed that the average PM2.5 indoor/outdoor (I/O) ratio was within the range 0.24–0.72, and varied with the performance of the window screen filter. An analysis of the correlation between the ventilation rate and the air exchange rate (AER) showed that the I/O ratio increased as AER increased. Additionally, the particle size removal efficiency (PSE) of the window screen filters varied considerably with increasing particle diameter (0.3–10.0 μm), ranging from 0 to 82.4%, and the PSE results showed trends that were similar to those of PM2.5 removal efficiency based on the measurements performed in the test room. Therefore, window screen filters can be used to reduce the indoor concentration of outdoor particles.
•Window screen filters were evaluated in a test room and experimental chamber.•Air exchange rate is proportional to PM2.5 I/O ratio based on mass balance equation.•Relationship between test room performance and chamber testing results are shown.•PSE varies considerably according to the type of window screen filter.•PSE tends to differ according to the particle diameter. |
| doi_str_mv | 10.1016/j.buildenv.2020.106878 |
| format | Article |
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•Window screen filters were evaluated in a test room and experimental chamber.•Air exchange rate is proportional to PM2.5 I/O ratio based on mass balance equation.•Relationship between test room performance and chamber testing results are shown.•PSE varies considerably according to the type of window screen filter.•PSE tends to differ according to the particle diameter.</description><identifier>ISSN: 0360-1323</identifier><identifier>EISSN: 1873-684X</identifier><identifier>DOI: 10.1016/j.buildenv.2020.106878</identifier><language>eng</language><publisher>Oxford: Elsevier Ltd</publisher><subject>Air quality ; Correlation analysis ; Diameters ; Efficiency ; Filters ; Filtration ; Full scale tests ; Indoor air pollution ; Indoor air quality ; Indoor environments ; Natural ventilation ; Particle size ; Particulate emissions ; Particulate matter ; Ventilation ; Window screen filter</subject><ispartof>Building and environment, 2020-07, Vol.178, p.106878, Article 106878</ispartof><rights>2020 Elsevier Ltd</rights><rights>Copyright Elsevier BV Jul 2020</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c340t-6eeebb8c1d2643df7c1c78d4756065d260152bfa18a551d7d189e2dd6dd5da2e3</citedby><cites>FETCH-LOGICAL-c340t-6eeebb8c1d2643df7c1c78d4756065d260152bfa18a551d7d189e2dd6dd5da2e3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.buildenv.2020.106878$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids></links><search><creatorcontrib>Kang, Kyungmo</creatorcontrib><creatorcontrib>Kim, Taeyeon</creatorcontrib><creatorcontrib>Shin, Cheol Woong</creatorcontrib><creatorcontrib>Kim, Kichul</creatorcontrib><creatorcontrib>Kim, Jiwoong</creatorcontrib><creatorcontrib>Lee, Yun Gyu</creatorcontrib><title>Filtration efficiency and ventilation performance of window screen filters</title><title>Building and environment</title><description>Efficient natural ventilation is an important approach to maintaining indoor air quality. However, owing to the increasing concentration of outdoor particulate matter (PM), natural ventilation without filtration results in the introduction of outdoor particles in buildings, thus increasing indoor exposure to PM. Indoor PM concentration is determined by the particle removal efficiency of window screen filters. In this study, using an experimental chamber and an actual building, the particle removal performance of window screen filters was evaluated for their potential application. To investigate the relationship between the outdoor and indoor concentrations of particles with diameter size ≤ 2.5 μm (PM2.5), and to evaluate the efficiency of the window screen filters in removing such particles, the window screen filters were installed in a full-scale test room. The results obtained showed that the average PM2.5 indoor/outdoor (I/O) ratio was within the range 0.24–0.72, and varied with the performance of the window screen filter. An analysis of the correlation between the ventilation rate and the air exchange rate (AER) showed that the I/O ratio increased as AER increased. Additionally, the particle size removal efficiency (PSE) of the window screen filters varied considerably with increasing particle diameter (0.3–10.0 μm), ranging from 0 to 82.4%, and the PSE results showed trends that were similar to those of PM2.5 removal efficiency based on the measurements performed in the test room. Therefore, window screen filters can be used to reduce the indoor concentration of outdoor particles.
•Window screen filters were evaluated in a test room and experimental chamber.•Air exchange rate is proportional to PM2.5 I/O ratio based on mass balance equation.•Relationship between test room performance and chamber testing results are shown.•PSE varies considerably according to the type of window screen filter.•PSE tends to differ according to the particle diameter.</description><subject>Air quality</subject><subject>Correlation analysis</subject><subject>Diameters</subject><subject>Efficiency</subject><subject>Filters</subject><subject>Filtration</subject><subject>Full scale tests</subject><subject>Indoor air pollution</subject><subject>Indoor air quality</subject><subject>Indoor environments</subject><subject>Natural ventilation</subject><subject>Particle size</subject><subject>Particulate emissions</subject><subject>Particulate matter</subject><subject>Ventilation</subject><subject>Window screen filter</subject><issn>0360-1323</issn><issn>1873-684X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNqFkE9LAzEQxYMoWKtfQRY8b82f3Wx6U4qtSsGLgreQTSaQZZvUZNvSb2_q6tnTwJv33jA_hG4JnhFM-H03a3euN-D3M4rpSeSiEWdoQkTDSi6qz3M0wYzjkjDKLtFVSh3OwTmrJuh16fohqsEFX4C1Tjvw-lgob4o9-MH142oL0Ya4UV5DEWxxcN6EQ5F0BPCFzRUQ0zW6sKpPcPM7p-hj-fS-eC7Xb6uXxeO61KzCQ8kBoG2FJobyihnbaKIbYaqm5pjXWcSkpq1VRKi6JqYxRMyBGsONqY2iwKbobuzdxvC1gzTILuyizyclrar8PMO4zi4-unQMKUWwchvdRsWjJFieuMlO_nGTJ25y5JaDD2MQ8g97B1GmHyhgXAQ9SBPcfxXfr-F7NA</recordid><startdate>202007</startdate><enddate>202007</enddate><creator>Kang, Kyungmo</creator><creator>Kim, Taeyeon</creator><creator>Shin, Cheol Woong</creator><creator>Kim, Kichul</creator><creator>Kim, Jiwoong</creator><creator>Lee, Yun Gyu</creator><general>Elsevier Ltd</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7ST</scope><scope>8FD</scope><scope>C1K</scope><scope>F28</scope><scope>FR3</scope><scope>KR7</scope><scope>SOI</scope></search><sort><creationdate>202007</creationdate><title>Filtration efficiency and ventilation performance of window screen filters</title><author>Kang, Kyungmo ; Kim, Taeyeon ; Shin, Cheol Woong ; Kim, Kichul ; Kim, Jiwoong ; Lee, Yun Gyu</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c340t-6eeebb8c1d2643df7c1c78d4756065d260152bfa18a551d7d189e2dd6dd5da2e3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Air quality</topic><topic>Correlation analysis</topic><topic>Diameters</topic><topic>Efficiency</topic><topic>Filters</topic><topic>Filtration</topic><topic>Full scale tests</topic><topic>Indoor air pollution</topic><topic>Indoor air quality</topic><topic>Indoor environments</topic><topic>Natural ventilation</topic><topic>Particle size</topic><topic>Particulate emissions</topic><topic>Particulate matter</topic><topic>Ventilation</topic><topic>Window screen filter</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kang, Kyungmo</creatorcontrib><creatorcontrib>Kim, Taeyeon</creatorcontrib><creatorcontrib>Shin, Cheol Woong</creatorcontrib><creatorcontrib>Kim, Kichul</creatorcontrib><creatorcontrib>Kim, Jiwoong</creatorcontrib><creatorcontrib>Lee, Yun Gyu</creatorcontrib><collection>CrossRef</collection><collection>Environment Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><collection>Environment Abstracts</collection><jtitle>Building and environment</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kang, Kyungmo</au><au>Kim, Taeyeon</au><au>Shin, Cheol Woong</au><au>Kim, Kichul</au><au>Kim, Jiwoong</au><au>Lee, Yun Gyu</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Filtration efficiency and ventilation performance of window screen filters</atitle><jtitle>Building and environment</jtitle><date>2020-07</date><risdate>2020</risdate><volume>178</volume><spage>106878</spage><pages>106878-</pages><artnum>106878</artnum><issn>0360-1323</issn><eissn>1873-684X</eissn><abstract>Efficient natural ventilation is an important approach to maintaining indoor air quality. However, owing to the increasing concentration of outdoor particulate matter (PM), natural ventilation without filtration results in the introduction of outdoor particles in buildings, thus increasing indoor exposure to PM. Indoor PM concentration is determined by the particle removal efficiency of window screen filters. In this study, using an experimental chamber and an actual building, the particle removal performance of window screen filters was evaluated for their potential application. To investigate the relationship between the outdoor and indoor concentrations of particles with diameter size ≤ 2.5 μm (PM2.5), and to evaluate the efficiency of the window screen filters in removing such particles, the window screen filters were installed in a full-scale test room. The results obtained showed that the average PM2.5 indoor/outdoor (I/O) ratio was within the range 0.24–0.72, and varied with the performance of the window screen filter. An analysis of the correlation between the ventilation rate and the air exchange rate (AER) showed that the I/O ratio increased as AER increased. Additionally, the particle size removal efficiency (PSE) of the window screen filters varied considerably with increasing particle diameter (0.3–10.0 μm), ranging from 0 to 82.4%, and the PSE results showed trends that were similar to those of PM2.5 removal efficiency based on the measurements performed in the test room. Therefore, window screen filters can be used to reduce the indoor concentration of outdoor particles.
•Window screen filters were evaluated in a test room and experimental chamber.•Air exchange rate is proportional to PM2.5 I/O ratio based on mass balance equation.•Relationship between test room performance and chamber testing results are shown.•PSE varies considerably according to the type of window screen filter.•PSE tends to differ according to the particle diameter.</abstract><cop>Oxford</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.buildenv.2020.106878</doi></addata></record> |
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| source | Elsevier ScienceDirect Journals Complete |
| subjects | Air quality Correlation analysis Diameters Efficiency Filters Filtration Full scale tests Indoor air pollution Indoor air quality Indoor environments Natural ventilation Particle size Particulate emissions Particulate matter Ventilation Window screen filter |
| title | Filtration efficiency and ventilation performance of window screen filters |
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