MWM-Array Sensors for In Situ Monitoring of High-Temperature Components in Power Plants

Utilization of America's substantial coal reserves for energy production has become a national priority. Advanced coal-fired power plants offer an environmentally friendly means to achieve that goal. These power plants, such as ultrasupercritical power plants, will provide high thermal efficien...

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Bibliographic Details
Published in:IEEE sensors journal 2009-11, Vol.9 (11), p.1527-1536
Main Authors: Sheiretov, Y., Grundy, D., Zilberstein, V., Goldfine, N., Maley, S.
Format: Article
Language:English
Subjects:
20 FOSSIL-FUELED POWER PLANTS
Algorithms
ALLOYS
COAL
Coal-fired power plants
Condition monitoring
Costs
Electric power generation
Electric power plants
FOSSIL-FUEL POWER PLANTS
high-temperature
Magnetic materials
MATERIALS
MATERIALS SCIENCE
meandering winding magnetometer (MWM)
MONITORING
MWM-array sensors
Networks
Observability
Power generation
power plant components
Production
Reserves
SENSORS
SUPERCRITICAL STATE
Temperature
Temperature measurement
TEMPERATURE MONITORING
Temperature sensors
Thermal pollution
Uncertainty
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Summary:Utilization of America's substantial coal reserves for energy production has become a national priority. Advanced coal-fired power plants offer an environmentally friendly means to achieve that goal. These power plants, such as ultrasupercritical power plants, will provide high thermal efficiency along with greatly reduced emissions of CO 2 and other pollutants. Life cycle costs for the advanced coal-fired plants can be reduced by enhanced observability in support of condition-based maintenance. The enhanced observability can be achieved by using networks of condition-monitoring sensors that would provide component-level material condition information and through-wall temperature monitoring. This would reduce uncertainties in knowledge of material condition, at the level of individual components, and improve capability to predict remaining life of critical components. One approach being developed under the U.S. Department of Energy Small Business Innovation Research Program is to develop and implement high-temperature versions of the meandering winding magnetometer (HT-MWM) for temperatures up to 1000 degC. These patented sensors, coupled with multivariate inverse methods, would provide superior performance for in situ material condition monitoring (material degradation, flaw detection, stress relaxation, and/or creep monitoring) and through-wall temperature measurement. Networks of HT-MWMs will generate material condition information to be used by adaptive life-management algorithms for remaining life prediction and decision support.
ISSN:1530-437X
1558-1748
DOI:10.1109/JSEN.2009.2019335