Advanced electrospun filters to protect building environments from pollution

Cai, Rong-Rong; Zhang, Lizhi; Yu, Chuck Wah

doi:10.1177/1420326x18820458

Cited by 7 publications

(4 citation statements)

References 14 publications

(14 reference statements)

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“…12,13 A series of internal subroutines were developed through ANSYS Fluent to perform numerical simulation to study the pressure differential and efficiency changes of the filter media during the dust-contained stage. In recent years, many scholars 14–17 have carried out related numerical simulation research and experimental research.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of particle spatial distribution and filtration characteristic in the pleated filter media using OpenFOAM

Shu

Qian

Fang

et al. 2020

Indoor and Built Environment

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Fine dust is one of the important factors affecting precision instruments and human health, and the pleated filter media has been widely used in air filtration field. Based on the SEM image of the actual pleated filter media, a microscopic 3D model of the pleated filter media was established and the gas–solid two-phase flow was simulated using OpenFOAM. The results show that OpenFOAM can well simulate the particle deposition on the surface of the fibre filter media and the dendritic structures. The transverse distribution of the amount of deposited particle in the pleated filter media is in the form of two peaks structure, while the longitudinal distributions of the amount of deposited particle in 30° and 60° of the pleated filter media are relatively uniform with multi-peaks structure. The average relative error of the pressure drop between the simulation result and the empirical formula is 3.69%, and the pressure differential decreases first and then increases with the pleated angle, and at a gas velocity of 0.4 m/s, Δ Pmin is around 5 Pa (35° of the pleated angle). Through the above studies, the results could be helpful for the development and design of the pleated filter media.

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Section: Introductionmentioning

confidence: 99%

Numerical simulation of particle spatial distribution and filtration characteristic in the pleated filter media using OpenFOAM

Shu

Qian

Fang

et al. 2020

Indoor and Built Environment

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“…In the last few decades, environmental researchers have been focusing on indoor air quality (IAQ) issues and its improvement strategies. 1–5 The concern of a better IAQ is still progressing, in line with the latest technology of air conditioning and mechanical ventilation (ACMV) systems in improving indoor environmental quality (IEQ). With the rapid growth and greater development around the world today, the quantity of road vehicles and industrial development would also increase year by year; such factors are the endless major contributor of air pollutants.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of common indoor air pollutant reduction by a botanical indoor air biofilter system

Ibrahim

Chong

Yusoff

et al. 2019

Indoor and Built Environment

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Indoor air pollutant issues have attracted various researchers to investigate alternative solutions to non-biofiltration systems, such as common air purifiers that are generally used in the market. Research has found that active botanical biofilter systems are efficient in filtering indoor air pollutants, as well as providing a refreshing environment to surroundings. The research presented here describes a developed prototype of a botanical indoor air biofilter (BIAB) and evaluates the performance of the BIAB system in reducing common indoor air pollutants. The system was assessed for its single-pass filtration across an aerosol containing particles with the diameter of 2.5 µm (PM2.5), 10 µm (PM10) and volatile organic compounds (VOCs) by burning aromatic cone incense. The system comprises three working sections: a fraction of horizontally grown plants with growth media as the botanical biofiltration section, an evaporative medium (an additional component from a commercial active botanical biofilter) and a mechanical ventilation system that supplies cleaned air to the surroundings. The BIAB system recorded the removal efficiencies of 54.5 ± 6.04% for PM2.5, 65.42 ± 9.27% for PM10 and 46 ± 4.02% for VOCs.

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“…The main air cleaning technologies to remove harmful substances include filter-based air purifiers, electrostatic air purifiers and negative ion air purifiers. 31 Among those, filter-based air purifiers are particularly effective. Through studying the effects of air purifiers on various smog particles, air cleaning can reduce the impact on human health by 43.47%–86.46%.…”

mentioning

confidence: 99%

“…When eliminating or controlling pollution from activities such as cooking is infeasible, 39,40 installing air cleaners in homes and offices is critical to successful environmental interventions and management. 31,37…”

mentioning

confidence: 99%

Advanced electrospun filters to protect building environments from pollution

Cited by 7 publications

References 14 publications

Numerical simulation of particle spatial distribution and filtration characteristic in the pleated filter media using OpenFOAM

Numerical simulation of particle spatial distribution and filtration characteristic in the pleated filter media using OpenFOAM

Evaluation of common indoor air pollutant reduction by a botanical indoor air biofilter system

Towards the future prospect of control technology for alleviating indoor air pollution

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