Gas turbine operation control is normally based on thermocouple-measured exhaust temperatures. Due to radiation shielding and bulky package, it is difficult to provide high spatial resolution for measuring can-to-can combustion temperature profile at the exhaust duct. This paper has demonstrated that wavelength-division-multiplexing-based fiber Bragg grating sensors could provide high spatial resolution steady and dynamic temperature measurements.
Key Features
High spatial resolution for detailed temperature profiling
Capable of measuring both steady and dynamic temperature variations
Immune to electromagnetic interference
Lightweight and compact compared to traditional thermocouples
Suitable for harsh, high-temperature turbine environments
Enables multi-point sensing using wavelength-division multiplexing
Applications
Gas turbine exhaust temperature monitoring
Can-to-can combustion profiling
Power plant performance optimization
Aero-engine temperature distribution measurement
Real-time dynamic temperature diagnostics
Research and development in high-temperature sensing technologies