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| Measurements of Turbine Blade Temperatures Based on Effective Emissivity |
| TIAN Ji-bin1,FU Tai-ran1,XU Qiao-qi2,JIANG Hong-de2 |
1.Key Lab for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering,Tsinghua University, Beijing 100084,China
2. National Research Center of Gas turbine and IGCC Technology,
Department of Thermal Engineering, Tsinghua University, Beijing 100084, China |
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Abstract The model for radiation temperature measurement of turbine blades is established considering the effect of reflected thermal radiation. The effective emissivity of blade surface is introduced and the temperature measurement method based on the effective emissivity is discussed. The radiative view factors of blade surfaces are determined by the finite element method using the temperature distribution data. Then the effective spectral emissivity distribution of the blade surface is calculated based on the radiative view factors. The analysis provides a reference in the applications of temperature measurements based on the effective emissivity.
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2015, Vol. 36 
