Effects of Recuperator Performance on Micro Gas Turbine Overall Performance

doi:10.13675/j.cnki.tjjs.190177

Journal of Propulsion Technology ›› 2020, Vol. 41 ›› Issue (4): 740-749.DOI: 10.13675/j.cnki.tjjs.190177

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Effects of Recuperator Performance on Micro Gas Turbine Overall Performance

1.Institute of Engineering Thermophysics,Chinese Academy of Sciences,Beijing 100190,China;2.University of Chinese Academy of Sciences,Beijing 100049,China

Published:2021-08-15

回热器性能对微小型燃气轮机总体性能影响分析研究

周桥^1,2，尹钊¹，孙文超¹，张华良^1,2，高庆^1,2，谭春青^1,2

1.中国科学院工程热物理研究所，北京 100190;2.中国科学院大学，北京 100049

作者简介:周桥，博士生，研究领域为燃气轮机性能仿真分析与控制。E-mail:zhouqiao@iet.cn
基金资助:
国家自然科学基金（51806216）。

Abstract

Abstract: In order to study the effects of recuperator performance on micro gas turbine overall performance, a modified recuperator simulation model was proposed based on recuperator experiment, the gas turbine performance simulation and control law optimization were conducted. The results indicate that variable speed control improves gas turbine part-load thermal efficiency and remaining turbine outlet temperature at design-point value is an effective control strategy to further enhance gas turbine part-load performance. However, the performance under variable speed control also suffers greater deterioration when recuperator performance degradation occurs. The thermal efficiency under variable speed control decreases 4.38% due to 14.80% recuperator effectiveness degradation caused by its internal leakage and blockage.

Key words: Micro gas turbine;Recuperator;Heat transfer;Overall performance simulation;Control law optimization;Performance degradation

摘要： 为分析回热器性能对微小型回热燃气轮机总体性能的影响，基于回热器性能实验，提出了一种改进回热器仿真模型，开展了燃气轮机性能仿真与控制规律优化研究。结果表明：变转速控制能改善燃气轮机部分工况热效率，且控制涡轮出口温度于设计值是提高燃气轮机部分工况性能的有效控制策略，但亦使燃气轮机性能受回热器性能恶化的影响更为严重；变转速控制下，回热器内部泄漏、堵塞使回热器换热有效度降低14.80%，将造成热效率降低4.38%。

关键词: 微小型燃气轮机;回热器;热传导;总体性能仿真;控制规律优化;性能衰退

ZHOU Qiao^1,2, YIN Zhao¹, SUN Wen-chao¹, ZHANG Hua-liang^1,2, GAO Qing^1,2, TAN Chun-qing^1,2. Effects of Recuperator Performance on Micro Gas Turbine Overall Performance[J]. Journal of Propulsion Technology, 2020, 41(4): 740-749.

周桥，尹钊，孙文超，张华良，高庆，谭春青. 回热器性能对微小型燃气轮机总体性能影响分析研究[J]. 推进技术, 2020, 41(4): 740-749.

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Effects of Recuperator Performance on Micro Gas Turbine Overall Performance

回热器性能对微小型燃气轮机总体性能影响分析研究

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