Performance optimization of the integrated system for cooling and power generation of scramjet engines

于铭哲; 李健; 李祥; 史梦瑶; 何博; 沈俊

doi:10.19666/j.rlfd.202501024

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Performance optimization of the integrated system for cooling and power generation of scramjet engines

更新时间：2025-11-21

- Performance optimization of the integrated system for cooling and power generation of scramjet engines
- Thermal Power Generation Issue 11, Pages: 32-41(2025)
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- DOI：10.19666/j.rlfd.202501024
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- Published：2025
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于铭哲, 李健, 李祥, et al. Performance optimization of the integrated system for cooling and power generation of scramjet engines[J]. Thermal Power Generation, 2025, (11): 32-41.
DOI：

于铭哲, 李健, 李祥, et al. Performance optimization of the integrated system for cooling and power generation of scramjet engines[J]. Thermal Power Generation, 2025, (11): 32-41. DOI： 10.19666/j.rlfd.202501024.

摘要

超燃冲压发动机是当前高超声速飞行器的主流动力系统。高超声速飞行器长时间、高马赫数飞行时发动机热防护需求与用电需求显著。针对某型号超燃冲压发动机，设计了一种基于超临界CO_2布雷顿循环的冷却与发电一体化系统；构建了发动机的壁面热源表征模型，探究了吸热压力、透平入口温度、放热压力和回热度等关键设计参数对系统热力性能的影响规律及参数间的耦合关系；采用多参数协同优化方法，获得了冷却与发电一体化系统的最佳设计方案与最优性能，并以传统简单循环作为基准方案进行对比，评估了本方案的热力性能优势。结果表明：该冷却与发电一体化系统的最高发电效率可达15.9%，可实现206.2 kW的持续电力供应，表现出较好的应用潜力；发动机壁面吸热过程夹点温差越小，本方案相对基准方案的热力性能优势越显著，发电效率的最大相对提高量可达9.3%。

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