Calculation of Smoke Plume Opacity from Particulate Air Pollutant Properties

摘要

Calculation of smoke plume opacity from the properties of the particulate emission is facilitated with the use of a parameternK (specific particulate volume cm3/m3/ extinction coefficient m-1) computed from theory. Graphs of K vs. the geometric mass mean particle radius at geometric standard deviations from 1 (monodisperse) to 10 are presented for particle refractive indices of 1.96-.661 (carbon), 2.80-.02i, 1.33 (water) and 1.50 at a wavelength of light of 550 nm. Experimental data of K for various sources are reported. Application to Ringelmann number evaluations is discussed and illustrated with an example.