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High temperature monitoring the height of condensed water in steam pipes

Show simple item record Bar-Cohen, Yoseph Lih, Shyh-Shiuh Badescu, Mircea Bao, Xiaoqi Sherrit, Stewart Widholm, Scott Ostlund, Patrick Blosiu, Julian 2012-03-08T17:38:35Z 2012-03-08T17:38:35Z 2011-03-07
dc.identifier.citation SPIE Smart Structures and Materials/NDE Symposium, San Diego, CA, March 7-10, 2011 en_US
dc.identifier.clearanceno 11-0673
dc.description.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 250 deg. C. 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 250 deg. C. Measurements were made at temperatures as high as 250 deg. C and have shown the feasibility of the test method. This manuscript reports the results of this feasibility study. en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2011 en_US
dc.subject high temperatures en_US
dc.subject piezoelectric transducers, en_US
dc.subject fluid height monitoring en_US
dc.subject health monitoring en_US
dc.subject sensors en_US
dc.title High temperature monitoring the height of condensed water in steam pipes en_US
dc.type Preprint en_US
dc.subject.NASATaxonomy Instrumentation and Photography en_US

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