| Main Title |
Field evaluation of an autoisokinetic stack particulate sampling system / |
| Author |
Smith, Walter S. ;
Stewart., Emil W.
|
| Other Authors |
|
| CORP Author |
Entropy Environmentalists, Inc., Research Triangle Park, N.C.;Environmental Sciences Research Lab., Research Triangle Park, N.C. |
| Publisher |
U.S. Environmental Protection Agency, Environmental Sciences Research Laboratory, |
| Year Published |
1977 |
| Report Number |
EPA-600/2-77-035; EPA-68-02-2226 |
| Stock Number |
PB-264 223 |
| OCLC Number |
42243337 |
| Subjects |
Air sampling apparatus--Evaluation ;
Automatic control ;
Air--Pollution--Measurement
|
| Additional Subjects |
Particles ;
Measuring instruments ;
Air pollution ;
Samplers ;
Field tests ;
Calibrating ;
Design criteria ;
Performance evaluation ;
Mass flow ;
Industrial wastes ;
Combustion products ;
Chimney ;
Flue gases ;
Sites ;
Stationary sources ;
Air pollution sampling ;
Autoisokinetic samplers
|
| Internet Access |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| EJBD |
EPA 600-2-77-035 |
|
Headquarters Library/Washington,DC |
09/18/2014 |
| ELBD ARCHIVE |
EPA 600-2-77-035 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
| ESAD |
EPA 600-2-77-035 |
|
Region 10 Library/Seattle,WA |
03/23/2010 |
| NTIS |
PB-264 223 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
viii, 50 pp. : graphs ; 28 cm. |
| Abstract |
The performance of a prototype autoisokinetic stack particulate sampling system, designed to maintain automatically isokinetic sampling conditions, was evaluated in field tests at stationary sources. Tests were conducted to determine the operating limits and characteristics of the system. Preliminary tests demonstrated the necessity of making several modifications to the existing system to improve the level of performance for the field evaluation program. Improvements were made in the problem areas of the performance of the mass flowmeter, flow totalizer, and flow control valve systems and in the sampling nozzles. The autoisokinetic sampler was tested at four field installations selected to provide a wide range of sampling conditions. The results of the testing and analysis showed that the sampling system maintained acceptable isokinetic sampling rates of 100% + or - 10 at only one of four sources. An inverse relationship between the percent of isokinetic rate and the temperature of the gas stream being sampled was found. The evaluation revealed that the sampler will operate only in the narrow range of stack gas static pressures of + or - 3 inches water column. The physical hardware was found to be fragile and difficult to operate in the field. Overall, the autoisokinetic sampling system failed to meet the design goals. |
| Notes |
"EPA-600/2-77-035" -- Cover. EPA grant no. 68-02-2226 ; EPA project officer: Thomas E. Ward. |
