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Investigation of rotating detonation gas turbine cycle under design and off-design conditions

Author

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  • Qi, Lei
  • Dong, Jingnan
  • Hong, Wenpeng
  • Wang, Mingtian
  • Lu, Tao

Abstract

As cycle efficiency of gas turbine can be significantly improved due to the pressure gain characteristic of rotating detonation combustion, a cycle calculation model of rotating detonation gas turbine based on component characteristic curves of a single shaft gas turbine of 25 MW and limited maximum flow capacity of rotating detonation combustor was established to investigate the variations of cycle performance and component characteristics under design and off-design conditions. Thereafter, sensitivity analysis of component parameters was conducted to explore the comprehensive reason for change of cycle efficiency increment. The results demonstrated that compared with those of traditional gas turbine, higher cycle performance and lower compressor pressure ratio were gained in rotating detonation gas turbine. Increment of cycle efficiency and cycle net power increment significantly increased with the drop of load, which reached to 0.0248 and 3.261 MW when turbine inlet total temperature was 1450 K and increased to 0.0539 and 4.008 MW when turbine inlet total temperature was 1279 K. Cycle performance was significantly affected by the changes of compressor pressure ratio, compressor efficiency, equivalence ratio of RDC and turbine efficiency, among which turbine efficiency rather than compressor outlet total temperature had the most significant effect on cycle efficiency increment under the calculated conditions.

Suggested Citation

  • Qi, Lei & Dong, Jingnan & Hong, Wenpeng & Wang, Mingtian & Lu, Tao, 2023. "Investigation of rotating detonation gas turbine cycle under design and off-design conditions," Energy, Elsevier, vol. 264(C).
  • Handle: RePEc:eee:energy:v:264:y:2023:i:c:s0360544222030985
    DOI: 10.1016/j.energy.2022.126212
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    References listed on IDEAS

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    1. Sousa, Jorge & Paniagua, Guillermo & Collado Morata, Elena, 2017. "Thermodynamic analysis of a gas turbine engine with a rotating detonation combustor," Applied Energy, Elsevier, vol. 195(C), pages 247-256.
    2. Wu, Yuwen & Weng, Chunsheng & Zheng, Quan & Wei, Wanli & Bai, Qiaodong, 2021. "Experimental research on the performance of a rotating detonation combustor with a turbine guide vane," Energy, Elsevier, vol. 218(C).
    3. Nian-kun Ji & Shu-ying Li & Zhi-tao Wang & Ning-bo Zhao, 2017. "Off-Design Behavior Analysis and Operating Curve Design of Marine Intercooled Gas Turbine," Mathematical Problems in Engineering, Hindawi, vol. 2017, pages 1-14, June.
    4. Zhang, Zhihao & Liu, Xiao & Gong, Yaozhen & Yang, Yang & Tang, Zijia & Liu, Gang & Deng, Fuquan & Yang, Jialong & Zheng, Hongtao, 2020. "Experimental study of stratified swirl flame dynamics in a model gas turbine combustor," Energy, Elsevier, vol. 211(C).
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