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Thermodynamic optimization of the indirect precooled engine cycle using the method of cascade utilization of cold sources

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  • Wang, Cong
  • Yu, Xuanfei
  • Pan, Xin
  • Qin, Jiang
  • Huang, Hongyan

Abstract

To solve the problem of engine performance degradation caused by excessive fuel consumption in the precooled engine cycle, a new optimization method based on the cascade utilization of cold source is proposed, in which the cold sources with different temperature ranges and different working fluids are reasonably matched and adequately utilized. Based on this method, two new optimization cycles are put forward, i.e., the air reheat precooling cycle (ARPC) and the hydrogen reheat precooling cycle (HRPC). To evaluate the performances of these two cycles, a unified model is established. According to the simulation results, the fuel consumption of the HRPC could be reduced by 0–21.04% compared with the traditional precooled engine. Besides, the specific impulse of the HRPC, which can be raised by 16.78% when the heat transfer effectiveness is set to 0.9, is higher than that of the ARPC, which can be increased by 12.64% at most. Moreover, considering the operating constraints, the reduction of the minimum temperature difference of the regenerator and the increase of the pressure recovery coefficient of intake are effective ways to expand the performance boundaries. The results in this paper are beneficial for the performance optimization of the precooled engine cycle.

Suggested Citation

  • Wang, Cong & Yu, Xuanfei & Pan, Xin & Qin, Jiang & Huang, Hongyan, 2022. "Thermodynamic optimization of the indirect precooled engine cycle using the method of cascade utilization of cold sources," Energy, Elsevier, vol. 238(PB).
    • Handle: RePEc:eee:energy:v:238:y:2022:i:pb:s036054422102017x
    DOI: 10.1016/j.energy.2021.121769
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    References listed on IDEAS

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    Cited by:

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    3. Wang, Cong & Yu, Xuanfei & Ha, Chan & Liu, Zekuan & Fang, Jiwei & Qin, Jiang & Shao, Jiahui & Huang, Hongyan, 2023. "Thermodynamic analysis for a novel chemical precooling turbojet engine based on a multi-stage precooling-compression cycle," Energy, Elsevier, vol. 262(PA).
    4. Ma, Xiaofeng & Jiang, Peixue & Zhu, Yinhai, 2023. "Modeling and performance analysis of a pre-cooling and power generation system based on the supercritical CO2 Brayton cycle on turbine-based combined cycle engines," Energy, Elsevier, vol. 284(C).
    5. Cai, Changpeng & Chen, Haoying & Fang, Juan & Zheng, Qiangang & Chen, Cheng & Zhang, Haibo, 2023. "Thermodynamic analysis of a novel precooled supersonic turbine engine based on aircraft/engine integrated optimal design," Energy, Elsevier, vol. 280(C).
    6. Wang, Cong & Feng, Yu & Liu, Zekuan & Wang, Yilin & Fang, Jiwei & Qin, Jiang & Shao, Jiahui & Huang, Hongyan, 2022. "Assessment of thermodynamic performance and CO2 emission reduction for a supersonic precooled turbine engine cycle fueled with a new green fuel of ammonia," Energy, Elsevier, vol. 261(PA).

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