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Orifice Meter Expansion Factor Experiments

[+] Author Affiliations
Thomas B. Morrow

Southwest Research Institute, San Antonio, TX

Paper No. HT-FED2004-56818, pp. 639-644; 6 pages
  • ASME 2004 Heat Transfer/Fluids Engineering Summer Conference
  • Volume 1
  • Charlotte, North Carolina, USA, July 11–15, 2004
  • Conference Sponsors: Heat Transfer Division and Fluids Engineering Division
  • ISBN: 0-7918-4690-3 | eISBN: 0-7918-3740-8
  • Copyright © 2004 by ASME


This paper presents new experimental data for orifice meter expansion factor and compares the results with previous data and accepted expansion factor correlations. The tests were performed in the Low Pressure Loop (LPL) of the Metering Research Facility (MRF) at Southwest Research Institute (SwRI) flowing natural gas through 100 mm (4-inch) and 150 mm (6-inch) diameter orifice meter tubes for values of the orifice diameter ratio (β) between 0.25 and 0.60. The results for expansion factor, within the β range of the tests, are in good agreement with previous data reported by Murdock and Foltz (1953) flowing steam in a 100 mm meter tube and by Seidl (1995) flowing air in a 50 mm (2-inch) diameter meter tube.

Copyright © 2004 by ASME
Topics: Pressure , Natural gas , Steam



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