Vertical Distribution Characteristics of Outdoor Particles Concentrations in High-Rise Buildings
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School of Building Services Science and Engineering, Xi'an University of Architecture and Technology, No.13 Yanta Road, Xi'an, Shaanxi, China
Xin Zhang   

School of Building Services Science and Engineering, Xi'an University of Architecture and Technology, China
Submission date: 2020-05-11
Final revision date: 2020-08-06
Acceptance date: 2020-08-11
Online publication date: 2020-12-03
Publication date: 2021-02-05
Pol. J. Environ. Stud. 2021;30(2):1913–1922
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 (1st, 7th, 11th, 17th, 23th, and 27th 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. PM1.0/PM10 and PM2.5/PM10 all showed a trend of first decreased and then increased at different vertical height. The highest points of PM2.5/PM10 and PM1.0/PM10 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.