| Main Title |
Effects of nozzle design and sampling techniques on aerosol measurements / |
| Author |
Smith, F. H.
|
| CORP Author |
ARO, Inc., Arnold Air Force Station, Tenn.;National Environmental Research Center, Research Triangle Park, N.C. Chemistry and Physics Lab. |
| Publisher |
U.S. Environmental Protection Agency, Chemistry and Physics Laboratory, |
| Year Published |
1974 |
| Report Number |
PB-243 588; EPA-ROAP-26AAM; EPA-650/2-74-070 |
| Stock Number |
PB-243 588 |
| OCLC Number |
53209658 |
| Subjects |
Aerosols--Measurement ;
Air--Pollution--Measurement
|
| Additional Subjects |
Aerosols ;
Gas sampling ;
Designn ;
Nozzles ;
Samplers ;
Probes ;
Velocity ;
Gas flow ;
Performance evaluation ;
Tests ;
Lasers ;
Laser velocimeters ;
Isokinetic probes
|
| Internet Access |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| ELBD ARCHIVE |
EPA 650-2-74-070 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
| ELBD RPS |
EPA 650-2-74-070 |
repository copy |
AWBERC Library/Cincinnati,OH |
08/31/2020 |
| ERAD |
EPA 650.2-74-070 |
|
Region 9 Library/San Francisco,CA |
04/27/2016 |
| NTIS |
PB-243 588 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
89 pages : illustrations ; 28 cm |
| Abstract |
This investigation was concerned with the evaluation of probe performance as a function of geometry, mean gas velocity, probe angle of attack with respect to the flow, and extraction rate. The performance of the probes was compared using the sampling error determined from the flow parameters based on a zero-error assumption at isokinetic sampling conditions. Isokinetic, or equal velocity sampling, was accomplished by using a variable speed wind tunnel to obtain the flow field around the probes and then varying the probe extraction velocity by connecting the probes to a controllable vacuum source. Laser instrumentation was used in this study to confirm the uniformity of the flow in the test section prior to testing the probes. Probe nozzles with a sharp-lip, square-lip, and side opening were tested. In general, the efficiencies of the probes decreased with increasing angle of attack. |
| Notes |
"Interagency Agreement No. EPA-IAAG-0139(D). ROAP No. 26AAM ..." EPA Project Officer: Dr. Kenneth T. Knapp. "July 1974." "EPA 650-2-74-070." |
