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Title: Method for determining waveguide temperature for acoustic transceiver used in a gas turbine engine

Abstract

A method for determining waveguide temperature for at least one waveguide of a transceiver utilized for generating a temperature map. The transceiver generates an acoustic signal that travels through a measurement space in a hot gas flow path defined by a wall such as in a combustor. The method includes calculating a total time of flight for the acoustic signal and subtracting a waveguide travel time from the total time of flight to obtain a measurement space travel time. A temperature map is calculated based on the measurement space travel time. An estimated wall temperature is obtained from the temperature map. An estimated waveguide temperature is then calculated based on the estimated wall temperature wherein the estimated waveguide temperature is determined without the use of a temperature sensing device.

Inventors:
; ;
Publication Date:
Research Org.:
Siemens Energy, Inc., Orlando, FL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1435642
Patent Number(s):
9,945,737
Application Number:
15/128,417
Assignee:
SIEMENS ENERGY, INC. (Orlando, FL) NETL
DOE Contract Number:
FC26-05NT42644
Resource Type:
Patent
Resource Relation:
Patent File Date: 2015 Apr 21
Country of Publication:
United States
Language:
English

Citation Formats

DeSilva, Upul P., Claussen, Heiko, and Ragunathan, Karthik. Method for determining waveguide temperature for acoustic transceiver used in a gas turbine engine. United States: N. p., 2018. Web.
DeSilva, Upul P., Claussen, Heiko, & Ragunathan, Karthik. Method for determining waveguide temperature for acoustic transceiver used in a gas turbine engine. United States.
DeSilva, Upul P., Claussen, Heiko, and Ragunathan, Karthik. Tue . "Method for determining waveguide temperature for acoustic transceiver used in a gas turbine engine". United States. doi:. https://www.osti.gov/servlets/purl/1435642.
@article{osti_1435642,
title = {Method for determining waveguide temperature for acoustic transceiver used in a gas turbine engine},
author = {DeSilva, Upul P. and Claussen, Heiko and Ragunathan, Karthik},
abstractNote = {A method for determining waveguide temperature for at least one waveguide of a transceiver utilized for generating a temperature map. The transceiver generates an acoustic signal that travels through a measurement space in a hot gas flow path defined by a wall such as in a combustor. The method includes calculating a total time of flight for the acoustic signal and subtracting a waveguide travel time from the total time of flight to obtain a measurement space travel time. A temperature map is calculated based on the measurement space travel time. An estimated wall temperature is obtained from the temperature map. An estimated waveguide temperature is then calculated based on the estimated wall temperature wherein the estimated waveguide temperature is determined without the use of a temperature sensing device.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Apr 17 00:00:00 EDT 2018},
month = {Tue Apr 17 00:00:00 EDT 2018}
}

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