In-vessel fluid flow measurements using thermocouples cross-correlation.

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Fluid flow rate in high temperature and pressure vessels can be difficult to measure due to the associated harsh environment, inaccessible locations and pressure boundary integrity concerns. However, by using quick response miniature thermocouples to measure the naturally occurring temperature variations within the flow, the fluid velocity can be inferred from the transit time analysis. This flow measurement technique has other advantages such as the flow profile is not significantly disturbed, no additional flow restrictions introduced and the system fiction factor is not increased. Furthermore, since the measured flow rate is generally unaffected by the global system dynamics, such as ... continued below

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12 p.

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NguyenLe, Q. May 8, 1998.

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Description

Fluid flow rate in high temperature and pressure vessels can be difficult to measure due to the associated harsh environment, inaccessible locations and pressure boundary integrity concerns. However, by using quick response miniature thermocouples to measure the naturally occurring temperature variations within the flow, the fluid velocity can be inferred from the transit time analysis. This flow measurement technique has other advantages such as the flow profile is not significantly disturbed, no additional flow restrictions introduced and the system fiction factor is not increased. Furthermore, since the measured flow rate is generally unaffected by the global system dynamics, such as heat increases or losses, as well as changes in the flow regimes, the location of the thermocouple pairs is extremely flexible. Due to the mentioned advantages, the thermocouple cross-correlation flow measurement method has been developed for use at the Purdue University Multi-Dimensional Integral Test Assembly (PUMA). Currently, thermocouple cross-correlation technique is used to measure the Reactor Pressure Vessel downcomer fluid velocity and the suppression pool in-vessel natural circulation velocity.

Physical Description

12 p.

Notes

INIS; OSTI as DE00010771

Medium: P; Size: 12 pages

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  • 6th International Conference on Nuclear Engineering, ICONE-6, San Diego, CA (US), 05/10/1998--05/15/1998

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  • Report No.: ANL/RA/CP-96389
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 10771
  • Archival Resource Key: ark:/67531/metadc620843

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • May 8, 1998

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  • June 16, 2015, 7:43 a.m.

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  • April 6, 2017, 8:21 p.m.

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NguyenLe, Q. In-vessel fluid flow measurements using thermocouples cross-correlation., article, May 8, 1998; Illinois. (digital.library.unt.edu/ark:/67531/metadc620843/: accessed October 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.