학술논문
에어 필터 설계에 대한 새로운 접근 : 친수성 및 소수성을 가진 유비쿼터스 소재 기반의 야누스 에어 필터 시스템 / A novel approach to desinging air filters: Ubiquitous material-based Janus air filter modules with hydrophilic and hydrophobic parts
Document Type
Dissertation/ Thesis
Source
Subject
Language
Korean
Abstract
A Janus air filter (JAF) based on ubiquitous materials (sponge or cotton fabric) and with an optimized ratio of hydrophilic (75%) and hydrophobic (25%) parts was prepared using a simple and economical process that did not require specialized equipment or multiple steps. As a result of the hydrophobic part of the JAF, the adsorption of particulate matter (PM) was higher at the rear than at the front of the hydrophilic part of the JAF. The amount of PM adsorbed was further increased in the hydrophilic part of the JAF when the degree of hydrophobicity was increased in the hydrophobic part. The sponge/cotton JAFs exhibited excellent recyclability of up to 30 cycles with consistent long-term performance (RE: 99.99% and △P: 61 Pa) at extremely high PM2.5 concentrations (over 642,000 μg/m3) and flow rates (1 m/s). A modular JAF could achieve the performance of a high-efficiency particulate air (HEPA) filter (99.99%) at a PM0.3 concentration of 499,000 pieces/L and flow rate of 1 m/s with a low pressure drop of 152 Pa.