標題: A MODEL FOR PREDICTING PERFORMANCE OF AN ANNULAR DENUDER SYSTEM
作者: LU, CY
BAI, HL
LIN, YM
環境工程研究所
Institute of Environmental Engineering
公開日期: 1-十月-1995
摘要: A mathematical model for simultaneous gas diffusion, aerosol diffusion and evaporation is presented to predict performance of the annular denuder system. Approximating the aerosol size distribution by a lognormal function and using the statistical method of moment, the evolution of the three aerosol moments and the mass balance equations for the two associated gases in the annular denuder system are obtained. The governing equations were cast into dimensionless form and the performance of the model was validated by the existing data available in the literature. The effects of governing dimensionless groups on the model performance were evaluated in the sensitivity analysis. The model was then applied for sampling nitric acid gas using a typical range of atmospheric aerosol and gas properties to derive the performance equation of the annular denuder system. The methodologies presented herein are helpful in providing design and operational criteria of the annular denuder system for a real sampling of atmospheric reactive gases that minimizes measurement artifacts.
URI: http://hdl.handle.net/11536/1723
ISSN: 0021-8502
期刊: JOURNAL OF AEROSOL SCIENCE
Volume: 26
Issue: 7
起始頁: 1117
結束頁: 1129
顯示於類別:期刊論文


文件中的檔案:

  1. A1995TB40600007.pdf