Selection of air filters for residential fresh air in China based on the control of PM2.5

Zhang, Xin; Fan, Yi; Zhang, Jiaxin; Wang, Huan; Wei, Shuxuan; Yu, Wan-Qing

doi:10.2298/tsci200301120z

Cited by 2 publications

(1 citation statement)

References 16 publications

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“…Meanwhile, with the continuous improvement in buildings’ airtightness levels [ 13 ], indoor environments have become relatively closed. As a result, the fresh-air system has become an important way to effectively solve the indoor sanitary environment issue and provide fresh air [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

Comparison of the Application of Three Methods for the Determination of Outdoor PM2.5 Design Concentrations for Fresh Air Filtration Systems in China

Zhang

Sun

et al. 2022

IJERPH

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With the increasing popularity of fresh-air filtration systems, the methods of determining the outdoor PM2.5 design concentration have become more important. However, the monitoring of atmospheric fine particles in China started relatively late, and there are relatively few cities with complete data, with obvious regional differences, which led to many problems in the selection of air filters for fresh-air filtration systems. In this paper, three methods of determining outdoor PM2.5 design concentration were analyzed using the daily average concentration of PM2.5 in 31 provincial capital cities from 2016 to 2020. Six typical cities in different regions were also taken as examples. The advantages and disadvantages of the three existing statistical methods were compared and analyzed, as well as the corresponding differences in the selection of outdoor PM2.5 concentration value on the filter systems. The results showed that the method of mathematical induction was more accurate and reasonable for the calculation of outdoor PM2.5 design concentrations. The local outdoor PM2.5 design concentration could be quickly calculated using the recommended coefficient K and annual average PM2.5 concentration of the region, especially for small and medium-sized cities without monitoring data. However, the recommended coefficient K should be provided based on the specific region, and should be divided into values for strict conditions and normal conditions during use. This would provide a simple and effective way to select the correct air filters for practical engineering.

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Section: Introductionmentioning

confidence: 99%

Comparison of the Application of Three Methods for the Determination of Outdoor PM2.5 Design Concentrations for Fresh Air Filtration Systems in China

Zhang

Sun

et al. 2022

IJERPH

Self Cite

View full text Add to dashboard Cite

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Deposition rate and purification effect of atmospheric particle by different pipeline connection forms

Xu,

Zhang,

Gao

et al. 2024

THERM SCI

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The connection form of pipelines has an important impact on the comprehensive performance evaluation of fresh air systems. The most used PVC fresh air pipeline material in the market was selected for experimental research in this paper, and the deposition rates of particles of different pipeline connection form of 45?, 90? bend, and straight tee were all tested and compared. The purification effect of the pipeline connection form of the highest deposition rate is tested and studied. The results showed that the particle deposition rates were the highest in the connection form of straight tee, with deposition rates of 47.61, 18.06, and 8.13% for PM10, PM2.5, and PM1.0, respectively. As the particle size increases, the deposition rate of particles also gradually increases. The larger the inlet velocity, the greater the deposition rate. The particle concentration on the outlet of the pipeline in the connection forms of straight tee was significantly decreased after adding the purification equipment, and the deposition rates of PM10, PM2.5, and PM1.0 decreased by 45.01, 68.89, and 77.48%. Therefore, the use of pipeline elbows should be reduced, and purification equipment should be installed in the process of using, which will reduce the deposition of particles in the fresh air systems.

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Selection of air filters for residential fresh air in China based on the control of PM2.5

Cited by 2 publications

References 16 publications

Comparison of the Application of Three Methods for the Determination of Outdoor PM2.5 Design Concentrations for Fresh Air Filtration Systems in China

Comparison of the Application of Three Methods for the Determination of Outdoor PM2.5 Design Concentrations for Fresh Air Filtration Systems in China

Deposition rate and purification effect of atmospheric particle by different pipeline connection forms

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