Pilot study of the vertical variations in outdoor pollutant concentrations and environmental conditions along the height of a tall building

Azimi, Parham; Zhao, Haoran; Fazli, Torkan; Zhao, Dan; Faramarzi, Afshin; Leung, Luke K.‐P.; Stephens, Brent

doi:10.1016/j.buildenv.2018.04.031

Cited by 29 publications

(17 citation statements)

References 50 publications

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“…The average concentrations of PM 10 , PM 2.5 , and PM 1.0 were 35.6 μg/m 3 , 21.3 μg/m 3 , 16.2 μg/m 3 , respectively. Some related literature showed the concentration distribution of outdoor particulate matters in high-rise buildings had a great relationship with the outdoor wind field [26,27], and there were obvious vortices at different heights. Table 2 showed the relevant values of outdoor meteorological parameters during the test.…”

Section: Variation Of Average Concentration Of Particulates With Diffmentioning

confidence: 99%

Vertical Distribution Characteristics of Outdoor Particles Concentrations in High-Rise Buildings

Zhang¹,

Fan²,

Yu³

et al. 2021

Pol. J. Environ. Stud.

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With speeding up urbanization in China, it is important to understand the vertical distribution characteristics of outdoor particulate matter concentrations of high-rise buildings. A high-rise building at different heights (1 st , 7 th , 11 th , 17 th , 23 th , and 27 th floors) in a university in Xi'an was tested and analyzed in this paper. Test time was 8:00, 12:00, 15:00, 15:00 and 22:00, respectively. The results showed that the concentration of each particulate matter changed the same trend roughly with the increase of vertical height at 8:00 and 22:00, as well as at 15:00 and 18:00. While the mass concentration of each particle showed a trend of first increased, then decreased and next then increased with the height increased when the time was 12:00. It caused by the inverse temperature. The particles between 0 and 1.0 μm accounted for more than 99.4% during the testing. There were mainly small particles in the atmosphere. PM 1.0 /PM 10 and PM 2.5 /PM 10 all showed a trend of first decreased and then increased at different vertical height. The highest points of PM 2.5 /PM 10 and PM 1.0 /PM 10 increased by 9.63% and 8.2% respectively from the lowest points, and the ratio was the highest at 15:00. At the same time, outdoor meteorological conditions would also affect the concentration distribution of particulate matters. This paper provides a reference for the development of high-rise buildings and the effective control of particulate matter concentration in high-rise buildings.

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Section: Variation Of Average Concentration Of Particulates With Diffmentioning

confidence: 99%

Vertical Distribution Characteristics of Outdoor Particles Concentrations in High-Rise Buildings

Zhang¹,

Fan²,

Yu³

et al. 2021

Pol. J. Environ. Stud.

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“…A few previous studies conducted measurements on roadside high-rise buildings to investigate the vertical concentration profiles of traffic-related air pollutants. Major pollutants such as PM 10 , PM 2.5 (particulate matter with a diameter less than 10 μm and 2.5 μm, respectively) NO 2 , CO 2 , and CO emitted from the adjacent roads were gradually reduced as the measurement height increased because of vertical mixing [ 18 , 19 ]. To overcome the spatial limitations of vertical distribution measurements based on fixed structures such as towers and buildings, mobile measurements using a drone have recently been attempted by many researchers.…”

Section: Introductionmentioning

confidence: 99%

Assessing 3-D Spatial Extent of Near-Road Air Pollution around a Signalized Intersection Using Drone Monitoring and WRF-CFD Modeling

Lee

Kwak

2020

IJERPH

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In this study, we have assessed the three-dimensional (3-D) spatial extent of near-road air pollution around a signalized intersection in a densely populated area using collaborating methodologies of stationary measurements, drone monitoring, and atmospheric dispersion modeling. Stationary measurement data collected in the roadside apartment building showed a substantial effect of emitted pollutants, such as nitrogen oxides (NOx), black carbon (BC), and ultrafine particles (UFPs), especially during the morning rush hours. Vertical drone monitoring near the road intersection exhibited a steeper decreasing trend with increasing altitude for BC concentration rather than for fine particulate matter (PM2.5) concentration below the apartment building height. Atmospheric NOx dispersion was simulated using the weather research and forecasting (WRF) and computational fluid dynamics (CFD) models for the drone measurement periods. Based on the agreement between the measured BC and simulated NOx concentrations, we concluded that the air pollution around the road intersection has adverse effects on the health of residents living within the 3-D spatial extent within at least 120 m horizontally and a half of building height vertically during the morning rush hours. The comparability between drone monitoring and WRF-CFD modeling can further guarantee the identification of air pollution hotspots using the methods.

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“…The concentration of PM 2.5 was decreased significantly on the top floor throughout the whole year, which is coincident with results determined by previous studies. 33,57,59 On the 12th floor (62.6 m), the averaged PM 2.5 concentration was decreased by 8.4% (3.7%-12.3%), 23.4% (20.5%-34.3%), 17.1% (15.7%-20.9%) and 16.7% (12.2%-23.4%) over four measured periods. In contrast, Liu et al 33 investigated the vertical profile of PM 2.5 based on a 100 m height office building in an urban area and a mountain in the forest park in Nanjing over four seasons.…”

Section: Numerical Prediction Of Indoor Pm25 Concentrationmentioning

confidence: 97%

“…Over the past decade, vertical particle profiles on highrise office building facades have been focused on by researchers. 33,[54][55][56][57][58][59] Generally, the outdoor airborne particle concentration would decrease with the rise in height. Furthermore, several studies indicate that the outdoor particle concentration shows a stronger apparent decreasing trend with the height in open areas than in urban areas.…”

Section: Numerical Prediction Of Indoor Pm25 Concentrationmentioning

confidence: 99%

Investigation of outdoor air pollutant, PM_2.5 affecting the indoor air quality in a high-rise building

Kim

Chen

et al. 2021

Indoor and Built Environment

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This study investigated the impact of outdoor air pollutants on indoor air quality in a high-rise building, considering factors related to the seasons and air infiltration. Further, the impact of atmospheric weather conditions on air infiltration has been analysed in a downtown area of Suzhou, China. The influence of the outdoor air pollution rate on indoor air quality in the office building was investigated based on on-site measurements and computer simulations. Results showed that the impact of outdoor air pollutants on indoor air quality was highest in winter, followed by spring, autumn and summer. Furthermore, multiple factors, which affect the indoor air quality in a high-rise building, have been further investigated in this study, including stack effect, wind effect, infiltration rate, outdoor air pollution rate, seasonal change and air filter efficiency. The significant influence of these factors on the indoor air quality level with floor height variations has been verified. Based on the analysis, a high-efficiency filter is recommended to maintain healthy indoor air quality. Meanwhile, a double-filter system is required if a building is exposed to heavily polluted outdoor air considering the most substantial impact of outdoor air pollutants on indoor air quality in winter. Moreover, a numerical model of steady-state indoor PM2.5 concentration was established to determine the suitable air filter efficiency and airtightness.

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Pilot study of the vertical variations in outdoor pollutant concentrations and environmental conditions along the height of a tall building

Cited by 29 publications

References 50 publications

Vertical Distribution Characteristics of Outdoor Particles Concentrations in High-Rise Buildings

Vertical Distribution Characteristics of Outdoor Particles Concentrations in High-Rise Buildings

Assessing 3-D Spatial Extent of Near-Road Air Pollution around a Signalized Intersection Using Drone Monitoring and WRF-CFD Modeling

Investigation of outdoor air pollutant, PM_2.5 affecting the indoor air quality in a high-rise building

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Pilot study of the vertical variations in outdoor pollutant concentrations and environmental conditions along the height of a tall building

Cited by 29 publications

References 50 publications

Vertical Distribution Characteristics of Outdoor Particles Concentrations in High-Rise Buildings

Vertical Distribution Characteristics of Outdoor Particles Concentrations in High-Rise Buildings

Assessing 3-D Spatial Extent of Near-Road Air Pollution around a Signalized Intersection Using Drone Monitoring and WRF-CFD Modeling

Investigation of outdoor air pollutant, PM2.5 affecting the indoor air quality in a high-rise building

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Investigation of outdoor air pollutant, PM_2.5 affecting the indoor air quality in a high-rise building