Zero-Energy Purification of Ambient Particulate Matter Using a Novel Double-Skin Façade System Integrated with Porous Materials

He Li (), Hongwei Guo, Xiaohan Lu, Jun Hu and Ke Zhong ()
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He Li: School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
Hongwei Guo: School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
Xiaohan Lu: School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
Jun Hu: Department of Refrigeration and Air Conditioning, Shanghai Ocean University, Shanghai 201306, China
Ke Zhong: School of Environmental Science and Engineering, Donghua University, Shanghai 201620, China

Sustainability, 2024, vol. 16, issue 6, 1-17

Abstract: This study introduces an innovative double-skin façade system integrated with porous materials (DSF-PM) designed to combat air pollution by purifying atmospheric particulate matter without energy consumption. By evaluating three installation strategies—vertical, horizontal, and cross placement—and examining porous materials with pore sizes of 0.5 mm, 1 mm, and 2 mm through a validated computational fluid dynamics (CFD) model, we optimized the DSF-PM system for enhanced particulate matter purification. Our findings reveal that positioning the porous material on both airflow sides with a pore size of 1 mm yields the best purification performance. The seasonal performance analysis demonstrates that the DSF-PM system achieves an average annual purification efficiency of 26.24% for particles larger than 5 µm, surpassing 20% efficiency, comparable to primary filters in global standards, with zero energy input. This passive double-skin façade system, leveraging solar-driven natural convection, emerges as a sustainable solution for ambient air purification in urban environments.

Keywords: particulate matter; porous materials; double-skin façade; installation strategies; zero energy purification (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2024
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