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

DeSilva, Upul P.; Claussen, Heiko; Ragunathan, Karthik

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

Patent · Tue Apr 17 00:00:00 EDT 2018

OSTI ID:1435642

DeSilva, Upul P.; Claussen, Heiko; Ragunathan, Karthik

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.

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Research Organization:: Siemens Energy, Inc., Orlando, FL (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: FC26-05NT42644

Assignee:: SIEMENS ENERGY, INC. (Orlando, FL)

Patent Number(s):: 9,945,737

Application Number:: 15/128,417

OSTI ID:: 1435642

Resource Relation:: Patent File Date: 2015 Apr 21

Country of Publication:: United States

Language:: English

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