Record Display for the EPA National Library Catalog


Main Title Optical properties and visual effects of smoke-stack plumes : a cooperative study: Edison Electric Institute and U.S. Public Health Service /
Author Conner, William D. ; Hodkinson., J. Raymond
Other Authors
Author Title of a Work
Hodkinson, J. Raymond
CORP Author National Center for Air Polution Control, Cincinnati, Ohio.
Publisher U.S. Dept. of Health, Education, and Welfare, Bureau of Disease Prevention and Environmental Control,
Year Published 1967
Report Number PHS PUB 999 AP 30
Stock Number PB-174 705
OCLC Number 54367443
Subjects Smoke--Optical properties ; Visibility ; Air--Pollution ; Industrial Waste--analysis ; Air Pollution--analysis
Additional Subjects ( Waste gases ; Optical properties) ; ( Smokes ; Optical properties) ; Air pollution ; Test methods ; Visual inspection ; Standards ; Meters ; Optical instruments ; Illumination ; Particle size ; Aerosols
Library Call Number Additional Info Location Last
EMBD  PB-174705 NRMRL/GWERD Library/Ada,OK 04/30/2004
NTIS  PB-174 705 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation ix, 89 pages : illustrations ; 23 cm.
Two experimental smoke stacks were constructed to provide test plumes for studies of optical properties and visual effects over a wide range of illuminating and viewing conditions. Results indicate that visual effects are not intrinsic properties of the plumes but vary with the background of the plume and with illuminating and viewing conditions. Variation was much greater with white plumes than with black. Tests conducted with trained smoke inspectors showed that their evaluations of nonblack smoke plumes were significantly influenced by these variations. The angular scattering and transmission characteristics of the experimental plumes were measured and estimates of particle size derived therefrom. The study shows that the quantity of aerosols in a plume is best evaluated optically by its transmittance. Special methods for measuring the transmittance of smoke plumes objectively are discussed. The methods involve telephotometry, photography, and photometry of targets; the use of smoke guides; and laser measurements. (Author)
Includes bibliographical references (pages 61-62). Microfiche.