Record Display for the EPA National Library Catalog


Main Title A study on the accuracy of type-S pitot tubes /
Author Williams, J. C. ; DeJarnette., F. R.
Other Authors
Author Title of a Work
DeJarnette, Fred R.
CORP Author North Carolina State Univ., Raleigh. Dept. of Mechanical and Aerospace Engineering.;Environmental Monitoring and Support Lab., Research Triangle Park, N.C.
Publisher Environmental Monitoring and Support Laboratory, Office of Research and Development, U.S. Environmental Protection Agency ; Available to the public through the National Technical Information Service,
Year Published 1977
Report Number EPA-600/4-77-030; EPA-R-803168; EPA-ROAP-26AGG-327
Stock Number PB-273 070
OCLC Number 45626177
Subjects Pitot tubes ; Flue gases--Measurement
Additional Subjects Pitot tubes ; Design criteria ; Performance evaluation ; Field tests ; Velocity measurement ; Calibrating ; Sampling ; Flue gases ; Industrial wastes ; Combustion products ; Air pollution ; Gas analysis ; Chemical analysis ; Probes ; Flow rate ; Air pollution detection
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD  EPA 600-4-77-030 c.1 Headquarters Library/Washington,DC 05/02/2014
EKBD  EPA-600/4-77-030 Research Triangle Park Library/RTP, NC 08/01/2003
ELBD ARCHIVE EPA 600-4-77-030 Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
ESAD  EPA 600-4-77-030 Region 10 Library/Seattle,WA 03/23/2010
NTIS  PB-273 070 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation x, 70 p. : ill. ; 28 cm.
A study was done to identify and quantify the design parameters that affect the performance of type S pitot tubes in field use. Fourteen different pitot tubes were studied. In addition the effect of the sampling probe on the performance of several of these pitot tubes was determined as a function of distance, pitch, yaw and swirl. The results showed that the coefficient of the type S pitot tube under non-ideal flow conditions was very sensitive to the distance between the static and wake pressureports of the pitot tube. Increasing the spacing between the two ports decreased the sensitivity of the coefficient to yaw, pitch and swirl. Inserting the pitot tube 5 cm. further into the stack than the sampling probe also seemed to reduce the effects of non-ideal flow on the pitot coefficient.
"Quality Assurance Branch, Environmental Monitoring and Support Laboratory." "June 1977"--Cover. "EPA grant no. 803168, ROAP no. 26 AAG, program element no. 1 HA 327." "EPA-600/4-77-030."