標題: The Effect of Nanoparticle Convection-Diffusion Loss on the Transfer Function of an Aerosol Particle Mass Analyzer
作者: Lin, Guan-Yu
Liao, Bo-Xi
Tzeng, Neng-Jiun
Chen, Chun-Wan
Uang, Shi-Nian
Chen, Sheng-Chieh
Pui, David Y. H.
Tsai, Chuen-Jinn
環境工程研究所
Institute of Environmental Engineering
公開日期: 2014
摘要: The existing theoretical response spectra of APM-3600 agree well with the experimental data for submicron particles larger than 100nm in the electrical mobility diameter but not for nanoparticles. In this study, a 2-D numerical model was developed to predict the transfer function and response spectra of APM-3600 based on the detailed simulation of flow and particle concentration fields. It was found that recirculation flows existed in the annular classifying region and APM\'s inlet and outlet regions, which led to enhanced convection-diffusion loss of nanoparticles compared to that without considering flow recirculation. As a result, the APM underestimates the mass of naonoparticles due to the shift of the peak position of the transfer function to a larger diameter than the targeted diameter. The response spectra calculated with the simulated transfer function agree well both in shapes and peak values with the experimental data present in a previous study for both nanoparticles and submicron particles larger than 100 nm. The predicted particle masses also agree well with the PSL\'s experimental data of the article.Copyright 2014 American Association for Aerosol Research
URI: http://hdl.handle.net/11536/24582
http://dx.doi.org/10.1080/02786826.2014.902027
ISSN: 0278-6826
DOI: 10.1080/02786826.2014.902027
期刊: AEROSOL SCIENCE AND TECHNOLOGY
Volume: 48
Issue: 6
起始頁: 583
結束頁: 592
顯示於類別:期刊論文


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