The Influence of Outdoor Particulate Matter PM 2.5 on Indoor Air Quality: The Implementation of a New Assessment Method

Dominik Bekierski and Krystyna Barbara Kostyrko
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Dominik Bekierski: Thermal Physics, Acoustics and Environment Department, Building Research Institute (ITB), 1 Filtrowa Str., 00-611 Warsaw, Poland
Krystyna Barbara Kostyrko: Thermal Physics, Acoustics and Environment Department, Building Research Institute (ITB), 1 Filtrowa Str., 00-611 Warsaw, Poland

Energies, 2021, vol. 14, issue 19, 1-30

Abstract: Epidemiological research has shown that there is a positive correlation between the incidence of disease and mortality in humans and the mass concentration of particulate matter. An average 1 g of suspended dust emitted in a room results in the same exposure as 1 kg emitted to the outside air. In this study, the authors described the state of knowledge on dust pollution inside and outside buildings (I/O ratios), and methods of testing the PM infiltration process parameters. According to the law of indoor–outdoor particle mass balance and the physical basis of aerosol penetration theory, a relatively simple but new method for estimating the penetration factor P was tested. On the basis of the curve of dynamic changes of internal dust concentration in the process of particle concentration decay and next of the followed curve of dynamic rebound of particle concentration, authors measured penetration factor of ambient PM 2.5 through building envelope. Authors modification of the method is to be used for determining the value of the particle deposition rate k not from the course of the characteristics in the transient state (the so-called particle concentration decay curves) but from the concentration rebound course, stimulated by natural particle infiltration process. Recognition measurements of the mass concentration of suspended PM 2.5 and PM 10 particles inside the rooms were carried out. In this study, the choice of the prediction particle penetration factor P calculation method was supported by the exemplary calculation of the p value for a room polluted by PM 2.5 . The preliminary results of the penetration factors determined by this method P = 0.61 are consistent with the P factor values from the literature obtained so far for this dimensional group of dusts.

Keywords: particulate matter; dust pollution; IAQ; indoor–outdoor concentration ratio; penetration factor; air quality control (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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