Uncertainties in Temperature Measurement using Thermocouple in Gas Turbine Combustion Chamber

摘要

In this paper, the uncertainty analysis of thermocouples is carried out. The uncertainties in measurements of temperatures using thermocouples are required to provide an understanding between a thermocouple and its surroundings and the associated errors with measurements, especially in the case of flame temperature measurement. The predicted thermocouple temperatures were within 6% of the measured values, with the error primarily attributable to uncertainty in Inconel 600 emissivity and axial conduction losses along the length of the thermocouple assembly.