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Experimental research on high-temperature radiation characteristics of film-cooled plate of gas turbines

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  • Wang, Meng
  • Li, Haiwang
  • You, Ruquan
  • Kong, Weidi
  • Tao, Zhi

Abstract

With the rise in pre-turbine temperature and advancements in cooling technology, the temperature gap between the hot-gas and the blades increases. This phenomenon accentuates the significance of high-temperature radiation. However, the relevant experiments available to provide quantitative assessments of radiation are limited because of the challenging task of designing, constructing, and operating a high-temperature radiation facility. In this study, a high-temperature radiation facility is constructed to study the measurement method of evaluating radiation. The radiative heat flux of film-cooled plate of gas turbines are quantified successfully through the presented infrared-thermocouple dual reference body measurement and regression technique based on thermocouple data. The two proposed methodologies can pave the way for novel research avenues in evaluating radiation of the guide vanes. It is found that the proportion of radiation to total heat flux decreases gradually as the wall temperature increases. When the mainstream temperature is 912 K and the coolant temperature is 303 K, the radiation constitutes 50 % of the total heat flux.

Suggested Citation

  • Wang, Meng & Li, Haiwang & You, Ruquan & Kong, Weidi & Tao, Zhi, 2024. "Experimental research on high-temperature radiation characteristics of film-cooled plate of gas turbines," Energy, Elsevier, vol. 303(C).
    • Handle: RePEc:eee:energy:v:303:y:2024:i:c:s0360544224017791
    DOI: 10.1016/j.energy.2024.132005
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    References listed on IDEAS

    as
    1. Li, Haiwang & Wang, Meng & You, Ruquan & Liu, Song, 2023. "Thermal radiation correction formula of the scaling criteria for film cooling of turbine blades," Energy, Elsevier, vol. 282(C).
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    3. Wang, Zhiduo & Feng, Zhenping & Zhang, Xiaobo & Peng, Jingbo & Zhang, Fei & Wu, Xing, 2022. "Improving cooling performance and robustness of NGV endwall film cooling design using micro-scale ribs considering incidence effects," Energy, Elsevier, vol. 253(C).
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