Record Display for the EPA National Library Catalog


Main Title Design, Fabrication and Testing of Ambient Aerosol Sampler Inlets.
Author Wedding, James B. ; Weigand, Michael A. ;
CORP Author Research Inst. of Colorado, Fort Collins.;Environmental Sciences Research Lab., Research Triangle Park, NC.
Year Published 1982
Report Number EPA-600/3-82-039;
Stock Number PB82-198417
Additional Subjects Aerosols ; Samplers ; Air pollution ; Wind tunnels ; Performance evaluation ; Wind velocity ; Intake systems ; Particles ; Design ; Distillation equipment ; Flow rate ; Particle size ; Tests ; Air pollution standards
Library Call Number Additional Info Location Last
NTIS  PB82-198417 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 31p
Data are presented on the wind tunnel performances of two prototype Inhalable Particulate Matter (IPM) inlets designed for use with a dichotomous sampler. One was developed at the Aerosol Science Laboratory (ASL) Colorado State University, while the other was developed in an independent effort at the University of Minnesota (UM) and Lawrence Berkeley Laboratory (LBL). The ASL inlet is based on a unique omnidirectional cyclone fractionator, described in detail. Over the range of wind speeds from 0.5 - 24 km/hr, its measured 50% cutpoint was virtually invariant, 14.4 - 13.7 micrometers--well within the presently proposed IPM 50% cutpoint requirement. The UMLBL inlet results indicated near compliance with the IPM performance envelope, but there remain some small differences in data generated by UM and ASL personnel. Enrichment is apparent for both inlets in the 1 - 10 micrometers particle size range at the highest wind speed.