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Distribution Characteristics of Indoor PM 2.5 Concentration Based on the Water Type and Humidification Method

Author

Listed:
  • Seonghyun Park

    (Department of Industry-Academic Cooperation Foundation, Kookmin University, 77, Jeongneung-ro, Seongbuk-gu, Seoul 02707, Korea)

  • Janghoo Seo

    (School of Architecture, Kookmin University, 77, Jeongneung-ro, Seongbuk-gu, Seoul 02707, Korea)

  • Sunwoo Lee

    (Department of Construction Science, College of Architecture, Texas A&M University, TX 77843, USA)

Abstract

With the industrialization and rapid development of technology that can measure the concentration of pollutants, studies on indoor atmosphere assessment focusing on occupants have been recently conducted. Pollutants that worsen indoor atmosphere include gaseous and particulate matter (PM), and the effects and diffusion characteristics that influence indoor atmosphere vary depending on the indoor and outdoor concentration. White dust is a PM generated from minerals in water used for humidifiers during winter. Therefore, studies on the impact of white dust on human health and its size distribution are being actively conducted. However, since the indoor PM concentration varies depending on the humidification method and water type used, relevant studies are needed. Accordingly, this study examined the change in the PM 2.5 concentration and relative humidity on the basis of water types and humidification method. It was found that the indoor PM 2.5 concentration varied from 16 to 350 ug/m 3 , depending on the water types used for an ultrasonic humidifier. Conversely, when using a natural evaporative humidifier, white dust did not increase the indoor PM 2.5 concentration, regardless of the mineral content of the water used. Considering both humidification ability and continuous humidifier use indoors, water purifier with nano-trap filters must be utilized for ultrasonic humidifiers.

Suggested Citation

  • Seonghyun Park & Janghoo Seo & Sunwoo Lee, 2020. "Distribution Characteristics of Indoor PM 2.5 Concentration Based on the Water Type and Humidification Method," IJERPH, MDPI, vol. 17(22), pages 1-15, November.
    • Handle: RePEc:gam:jijerp:v:17:y:2020:i:22:p:8638-:d:448535
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    References listed on IDEAS

    as
    1. Doo Sung Choi & Jong-Sang Youn & Im Hack Lee & Young-Kwon Park & Byung Jin Choi & Ki-Joon Jeon, 2019. "Analysis of National PM 2.5 (FPM and CPM) Emissions by Past, Current, and Future Energy Mix Scenarios in the Republic of Korea," Sustainability, MDPI, vol. 11(16), pages 1-15, August.
    2. Vinh Van Tran & Duckshin Park & Young-Chul Lee, 2020. "Indoor Air Pollution, Related Human Diseases, and Recent Trends in the Control and Improvement of Indoor Air Quality," IJERPH, MDPI, vol. 17(8), pages 1-27, April.
    3. Hyungyu Park & Seonghyun Park & Janghoo Seo, 2020. "Evaluation on Air Purifier’s Performance in Reducing the Concentration of Fine Particulate Matter for Occupants according to its Operation Methods," IJERPH, MDPI, vol. 17(15), pages 1-14, August.
    4. Alejandro Moreno-Rangel & Tim Sharpe & Gráinne McGill & Filbert Musau, 2020. "Indoor Air Quality in Passivhaus Dwellings: A Literature Review," IJERPH, MDPI, vol. 17(13), pages 1-16, July.
    5. Martins, Nuno R. & Carrilho da Graça, Guilherme, 2017. "Impact of outdoor PM2.5 on natural ventilation usability in California’s nondomestic buildings," Applied Energy, Elsevier, vol. 189(C), pages 711-724.
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