Main Title |
A study on the accuracy of type-S pitot tubes / |
Author |
Williams, J. C. ;
DeJarnette., F. R.
|
Other Authors |
|
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 |
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
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. |
Abstract |
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. |
Notes |
"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." |