Record Display for the EPA National Library Catalog


Main Title Continuous measurement of total gas flowrate from stationary sources /
Author Brooks, E. F. ; Beder, E. C. ; Flegal, C. A. ; Luciani, D. J. ; Williams., R.
CORP Author TRW Systems Group, Redondo Beach, Calif.;National Environmental Research Center, Research Triangle Park, N.C. Control Systems Lab.
Publisher U.S. Environmental Protection Agency,
Year Published 1975
Report Number EPA-650/ 2-75-020; EPA-68-02-0636; EPA-ROAP-21ACX-AE
Stock Number PB-241 894
OCLC Number 09678550
Subjects Gas flow ; Flow meters ; Flow rate ; Flow measurement
Additional Subjects Gas flow ; Flow measurement ; Flowmeters ; Calibration ; Flow rate ; Performance evaluation ; Ducts ; Velocity
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD  EPA-650-2-75-020 Headquarters Library/Washington,DC 06/27/2014
EKBD  EPA-650/2-75-020 Research Triangle Park Library/RTP, NC 11/16/2016
ELBD ARCHIVE EPA-650-2-75-020 Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
NTIS  PB-241 894 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation xiv, 247 pages : illustrations, tables ; 28 cm
The program objectives was to evaluate hardware and techniques for the continuous measurement of the total gas flowrate from stationary sources, specifically in large or complex ducts where total flow metering devices such as plate orifices are not practical. Work consisted of formulation of operating specifications, evaluation of commercially available velocity sensors, development and evaluation of flow mapping techniques, and field demonstration of both hardware and technique. Results showed that total volumetric flowrate can be measured with accuracies consistently better than 10% in either circular or rectangular ducts through proper placement of from one to eight flow sensors, when standard traversal techniques would require twenty to fifty traverse points. The rectangular duct mapping techniques developed during the program were found to have optimum accuracy immediately downstream of an elbow. Several off-the-shelf velocity sensors were found acceptable for use in the specified stack-type environment. The field demonstrations verified the acceptability of both hardware and techniques.
"EPA-650/ 2-75-020." "February 1975."