Journal of the Korean Society of Visualization (한국가시화정보학회지)

The Korean Society of Visualization (한국가시화정보학회)
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Solar-driven steam flow for effective removal of particulate matters (PM)

태양열 기반 증기 유동을 이용한 미세먼지 제거 연구

  • Kim, Jeongju (Department of Mechanical Engineering, Pohang University of Science and Technology) ;
  • Kim, Jeong Jae (Department of Mechanical Engineering, Hanbat National University)
  • Received : 2021.12.01
  • Accepted : 2021.12.29
  • Published : 2021.12.31
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Abstract

Water vapor has received worldwide large attention due to its broad technological implications ranged from resource production and environmental remediation. Especially, one of the typical areas where the water vapor is important is the removal of PM (particulate matter) which causes a critical hazard to human health. However, most vapor-based PM removal methods are limited in removing PM2.5 by using relatively large water droplets and consume large energy. Here, we propose a superhydrophilic thermally-insulated macroporous membrane to generate steam flow. The water vapor directly captures PM with steam flow and hygroscopic characteristic of PM. The steam, the cluster of water vapor, from the membrane gives rise to high removal efficiencies compared to those of the control case without light illumination. To reveal PM removal mechanism, the steam flow and PM were quantitatively analyzed using PIV measurement. The proposed steam generator could be utilized as an economical and ecofriendly platform for effective PM removal at a fairly low cost in a sustainable, energy-free, and harmless-to-human manner.

Keywords

Acknowledgement

본 연구는 2021년 과학기술정보통신부의 재원으로 한국연구재단의 지원을 받아 수행되었습니다 (NRF- 2021R1G1A1093148).

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