Main Title |
Protocol for Size-Specific Emission Measurements (SIM-5) Applied to PM(10). |
Author |
Farthing, W. E. ;
McCain, J. D. ;
Williamson, A. D. ;
Ward, T. E. ;
|
CORP Author |
Southern Research Inst., Birmingham, AL.;Environmental Monitoring Systems Lab., Research Triangle Park, NC. |
Year Published |
1985 |
Report Number |
EPA-68-02-3696; EPA/600/D-85/109; |
Stock Number |
PB85-200194 |
Additional Subjects |
Aerosols ;
Particle size ;
Samplers ;
Mass flow ;
Industrial wastes ;
Design criteria ;
Performance evaluation ;
Sites ;
Combustion products ;
Particle size distribution ;
Concentration(Composition) ;
Impactors ;
Cyclone separators ;
Size specific emission measurements ;
Stationary sources ;
Air pollution sampling ;
Simulated method 5 ;
Computer applications ;
Anisokinetic error coefficients
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB85-200194 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
21p |
Abstract |
Aerosol particles can be withdrawn from industrial process streams and separated into two or more aerodynamic size fractions with a commercially-available inertial impactor or cyclone. However, with this currently-available equipment, the process gas must be sampled at a constant flow rate to provide constant size cut(s). Thus, traversing of a duct in one sampling run while maintaining isokinetic flow rate as in EPA Reference Methods 5 or 17, cannot be performed, because the flow rate cannot be adjusted from point to point to match stream and sampling nozzle velocities. Sampling theory was analyzed to develop a protocol for existing hardware which limits anisokinetic sampling error to acceptable levels, requires traversing, and is practical enough for source sampling. Anisokinetic sampling error was characterized for aerosol size distributions measured at sources and for hypothetical distributions. A protocol was developed and tested in which net sampling error is always less than 13% even if anisokinetic error is 20%. In this investigation, sampling at typical sources yielded much smaller errors. At most sources, a full traverse is permitted with one sampling run and one nozzle size per run. |
NTIS Title Notes |
Final rept.. |
PUB Date Free Form |
1985 |
Category Codes |
14B; 68A |
NTIS Prices |
PC A02/MF A01 |
Primary Description |
600/08 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
521419858 |
Origin |
NTIS |
Type |
CAT |