Thermodynamic Performance Analysis of E/F/H-Class Gas Turbine Combined Cycle with Exhaust Gas Recirculation and Inlet/Variable Guide Vane Adjustment under Part-Load Conditions

  • LI Keying ,
  • CHI Jinling ,
  • WANG Bo ,
  • ZHANG Shijie
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  • 1. Key Lab of Advanced Energy and Power, Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
    2. University of Chinese Academy of Sciences, Beijing 100049, China
    3. School of Mechanical Electronic & Information Engineering, China University of Mining & Technology - Beijing, Beijing 100083, China

网络出版日期: 2024-01-16

基金资助

The authors would like to acknowledge the financial support from the Fundamental Research Project in the Chinese National Sciences and Technology Major Project (Grant No. 2017-I-0002-0002).

版权

Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2023

Thermodynamic Performance Analysis of E/F/H-Class Gas Turbine Combined Cycle with Exhaust Gas Recirculation and Inlet/Variable Guide Vane Adjustment under Part-Load Conditions

  • LI Keying ,
  • CHI Jinling ,
  • WANG Bo ,
  • ZHANG Shijie
Expand
  • 1. Key Lab of Advanced Energy and Power, Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
    2. University of Chinese Academy of Sciences, Beijing 100049, China
    3. School of Mechanical Electronic & Information Engineering, China University of Mining & Technology - Beijing, Beijing 100083, China

Online published: 2024-01-16

Supported by

The authors would like to acknowledge the financial support from the Fundamental Research Project in the Chinese National Sciences and Technology Major Project (Grant No. 2017-I-0002-0002).

Copyright

Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2023

摘要

烟气再循环控制(exhaust gas recirculation control, EGRC)是一种进气加热技术,可以与进口/可变导叶控制(inlet guide vane/variable guide vane control, IGV/VGVC)和燃料流量控制(fuel flow control, FFC)共同用于负荷调节,从而有效地改善燃气轮机联合循环(Gas turbine combined cycle, GTCC)的部分负荷(变工况)性能。首先,建立了E级、F级和H级EGR-GTCC设计工况和变工况系统模型,并将其进行了验证。然后,对比分析了E/F/H级GTCC在EGR-IGV-FFC策略和传统IGV-FFC策略下的部分负荷性能。结果表明,EGR-IGV-FFC对E级、F级与H级GTCC系统部分负荷性能均具改善效果,并且在部分负荷下可得到比IGV-FFC更高的联合循环效率。然而,随着燃气轮机级别的提高,EGR作用负荷范围缩小,EGR与IGV调节引起燃气轮机性能下降,导致EGR-IGV-FFC对GTCC系统部分负荷性能的改善效果逐渐减小。此外,在负荷低于50%时,EGR-IGV-FFC对H级GTCC性能的改善效果不如IGV-FFC。本文结果可用于指导各级别GTCC系统部分负荷性能改善。

本文引用格式

LI Keying , CHI Jinling , WANG Bo , ZHANG Shijie . Thermodynamic Performance Analysis of E/F/H-Class Gas Turbine Combined Cycle with Exhaust Gas Recirculation and Inlet/Variable Guide Vane Adjustment under Part-Load Conditions[J]. 热科学学报, 2024 , 33(1) : 348 -367 . DOI: 10.1007/s11630-023-1901-0

Abstract

Exhaust gas recirculation control (EGRC), an inlet air heating technology, can be utilized in combination with inlet/variable guide vane control (IGV/VGVC) and fuel flow control (FFC) to regulate the load, thereby effectively improving the part-load (i.e., off-design) performance of the gas turbine combined cycle (GTCC). In this study, the E-, F-, and H-Class EGR-GTCC design and off-design system models were established and validated to perform a comparative analysis of the part-load performance under the EGR-IGV-FFC and conventional IGV-FFC strategies in the E/F/H-Class GTCC. Results show that EGR-IGV-FFC has considerable potential for the part-load performance enhancement and can show a higher combined cycle efficiency than IGV-FFC in the E-, F-, and H-Class GTCCs. However, the part-load performance improvement in the corresponding GTCC was weakened for the higher class of the gas turbine because of the narrower load range of EGR action and the deterioration of the gas turbine performance. Furthermore, EGR-IGV-FFC was inferior to IGV-FFC in improving the performance at loads below 50% for the H-Class GTCC. The results obtained in this paper could help guide the application of EGR-IGV-FFC to enhance the part-load performance of various classes of GTCC systems.

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