Hybrid Wireless-Wired Optical Sensor for Extreme Temperature Measurement in Next Generation Energy Efficient Gas Turbines

    Authors

    N. A. Riza; M. Sheikh;F. Perez

    Comments

    Authors: contact us about adding a copy of your work at STARS@ucf.edu

    Abbreviated Journal Title

    J. Eng. Gas. Turbines Power-Trans. ASME

    Keywords

    combustion; gas turbine power stations; optical sensors; silicon; compounds; sintering; temperature sensors; thermal expansion; SILICON-CARBIDE; HARSH ENVIRONMENTS; STABILIZATION; Engineering, Mechanical

    Abstract

    Accuracy, reliability, and long lifetimes are critical parameters for sensors measuring temperature in gas turbines of clean coal-fired power plants. Greener high efficiency next generation power plants need gas turbines operating at extremely high temperatures of 1500 degrees C, where present thermocouple temperature probe technology fails to operate with reliable and accurate readings over long lifetimes. To solve this pressing problem, we have proposed the concept of a new hybrid class of all-silicon carbide (SiC) optical sensor, where a single crystal SiC optical chip is embedded in a sintered SiC tube assembly, forming a coefficient of thermal expansion (CTE) matched all-SiC front-end probe. Because chip and host material are CTE matched, optimal handling of extreme thermal ramps and temperatures is possible. In this article, we demonstrate the first successful industrial combustor rig test of this hybrid all-SiC temperature sensor front-end probe indicating demonstrated probe structural robustness to 1600 degrees C and rig test data to similar to 1200 degrees C. The design of the rig test sensor system is presented and data are analyzed.

    Journal Title

    Journal of Engineering for Gas Turbines and Power-Transactions of the Asme

    Volume

    132

    Issue/Number

    5

    Publication Date

    1-1-2010

    Document Type

    Article

    Language

    English

    First Page

    11

    WOS Identifier

    WOS:000275243800005

    ISSN

    0742-4795

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