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Calibration characteristics of a three-hole probe and a static tube in wet steam

✍ Scribed by F. Bakhtar; H. Mashmoushy; O.C. Jadayel

Publisher: Elsevier Science
Year: 2001
Tongue: English
Weight: 209 KB
Volume: 22
Category: Article
ISSN: 0142-727X
DOI: 10.1016/s0142-727x(01)00111-4

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✦ Synopsis

Total pressure tubes, yawmeters and static probes can be used for measurements in droplet laden ¯ows, e.g., mists and wet steam. But to be successful it is important when calibrating the instruments that the characteristics of the droplets be satisfactorily matched. Water droplets formed by nucleation in the wet stages of steam turbines are very small and dicult to reproduce under steady ¯ow conditions. To produce wet steam with realistic droplet sizes requires a supply of supercooled steam which can be created under blow-down conditions by the equipment employed. The calibration characteristics of a three-hole probe and a static tube in superheated and in wet steam are presented.

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