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Proceedings Paper

High temperature monitoring the height of condensed water in steam pipes
Author(s): Yoseph Bar-Cohen; Shyh-Shiuh Lih; M. Badescu; Xiaoqi Bao; Stewart Sherrit; Scott Widholm; Patrick Ostlund; Julian Blosiu
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Paper Abstract

An in-service health monitoring system is needed for steam pipes to track through their wall the condensation of water. The system is required to measure the height of the condensed water inside the pipe while operating at temperatures that are as high as 250oC. The system needs to be able to make real time measurements while accounting for the effects of cavitation and wavy water surface. For this purpose, ultrasonic wave in pulse-echo configuration was used and reflected signals were acquired and auto-correlated to remove noise from the data and determine the water height. Transmitting and receiving the waves is done by piezoelectric transducers having Curie temperature that is significantly higher than 250oC. Measurements were made at temperatures as high as 250oC and have shown the feasibility of the test method. This manuscript reports the results of this feasibility study.

Paper Details

Date Published: 31 March 2011
PDF: 6 pages
Proc. SPIE 7984, Health Monitoring of Structural and Biological Systems 2011, 798423 (31 March 2011); doi: 10.1117/12.880907
Show Author Affiliations
Yoseph Bar-Cohen, Jet Propulsion Lab. (United States)
Shyh-Shiuh Lih, Jet Propulsion Lab. (United States)
M. Badescu, Jet Propulsion Lab. (United States)
Xiaoqi Bao, Jet Propulsion Lab. (United States)
Stewart Sherrit, Jet Propulsion Lab. (United States)
Scott Widholm, Jet Propulsion Lab. (United States)
Patrick Ostlund, Jet Propulsion Lab. (United States)
Julian Blosiu, Jet Propulsion Lab. (United States)


Published in SPIE Proceedings Vol. 7984:
Health Monitoring of Structural and Biological Systems 2011
Tribikram Kundu, Editor(s)

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