A Novel Moment Method to Estimate Aerosol Emission Rate for a Source

Abstract:

Particle pollution inevitably happens in most engineering environment and in the workplaces. In current studies on polluted particles, the information of particle dynamics with respect to its size distribution can be obtained from The Scanning Mobility Particle Sizer (SMPS) technique. However, the measured data usually can’t be directly used to account for sourced particle because the measured position and the sourced position are always not the same. Without flow transport, in theory, the difference between the measured data and the real sourced data should attribute to the coagulation mechanism which leads to the aerosol instability in thermodynamics. By introducing coagulation mechanism in the particle general dynamic equation and then introducing Taylor-expansion moment method proposed by Yu et al. (Aerosol Sci. Technol., 42:705-713, 2008), a novel method is proposed in this work which has an ability to estimate the emission rate of the source based on the measured data.

• Periodical: Advanced Materials Research (Volumes 518-523)
• Pages: 1839-1843
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.518-523.1839
• Online since: May 2012
• Authors: Zhi Guo Li, Yi Ke Yang, Li Cai Qi, Yang Xu, Ping Zhang, Ming Zhou Yu
• Keywords: Aerosol Emission Rate, Moment Method, Source, Taylor-Expansion Technique

References

[1] M. Z. Yu, J. Z. Lin and T. L. Chan, A New Moment method for solving the coagulation equation for particles in Brownian motion, Aerosol Sci. Technol. 42(2008) 705-713.

DOI: 10.1080/02786820802232972

[2] M. Seipenbusch, A. Binder, G Kasper, Temporal evolution of nanoparticle aerosols in workplace exposure, Ann. Occup. Hyg. 52(2008) 707-716.

[3] A.J. Koivisto, T. Hussein, R. Niemela, T. Tuomi, K Hameri, Impact of particle emissions of new laser printers on modeled office room, Atmos. Environ. 44(2010) 2140-2146.

DOI: 10.1016/j.atmosenv.2010.02.023

[4] E. Gehin, O. Ramalho, S. Kirchner, Size distribution and emission rate measurement of fine and ultrafine particle from indoor human activities, Atmos. Environ. 42 (2008) 8341-8352.

DOI: 10.1016/j.atmosenv.2008.07.021

[5] T. Schripp, M. Wensing, E. Uhde, T. Salthammer, C.R. He, L. Morawska, Evaluation of ultrafine particle emissions from laser printers using emission test chambers, Environ. Sci. Technol. 42(2008) 4338-4343.

DOI: 10.1021/es702426m

[6] M. Z. Yu, and J.Z. Lin, Taylor-expansion moment method for agglomerate coagulation due to Brownian motion in the entire size regime, J. Aerosol Sci. 40(2009) 549-562.

DOI: 10.1016/j.jaerosci.2009.03.001

[7] E. Otto, H. Fissan, S.H. Park, K.W. Lee, The log-normal size distribution theory of brownian aerosol coagulation for the entire particle size range: part II—analytical solution using Dahneke's coagulation kernel, J. Aerosol Sci. 30(1999) 17-34.

DOI: 10.1016/s0021-8502(98)00038-x