Exergy destruction analysis of gas-steam combined cycle based on the advanced exergy analysis method

WANG Shucheng; FU Zhongguang; ZHANG Gaoqiang; ZHANG Tianqing; FENG Qinqin; LU Ke

doi:10.19666/j.rlfd.201806080

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Exergy destruction analysis of gas-steam combined cycle based on the advanced exergy analysis method

更新时间：2025-09-28

- Exergy destruction analysis of gas-steam combined cycle based on the advanced exergy analysis method
- Thermal Power Generation Vol. 48, Issue 3, Pages: 75-79(2019)
- 作者机构：
  
  1. 华北电力大学电站设备状态监测与控制教育部重点实验室
  2. 国网甘肃省电力公司电力科学研究院
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.201806080
  CLC： TK123
- Published Online：26 February 2019，
  
  Published：2019
- 稿件说明：
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WANG Shucheng, FU Zhongguang, ZHANG Gaoqiang, et al. Exergy destruction analysis of gas-steam combined cycle based on the advanced exergy analysis method[J]. Thermal power generation, 2019, 48(3): 75-79.
DOI：

WANG Shucheng, FU Zhongguang, ZHANG Gaoqiang, et al. Exergy destruction analysis of gas-steam combined cycle based on the advanced exergy analysis method[J]. Thermal power generation, 2019, 48(3): 75-79. DOI： 10.19666/j.rlfd.201806080.

摘要

先进?分析方法作为传统?分析方法的补充和拓展

可以更深入地研究系统各部件?损产生的内在原因。利用先进?分析方法对燃气-蒸汽联合循环系统各主要部件的?损进行分析

并将?损分为内部?损、外部?损、可避免?损和不可避免?损。结果表明

在设计工况下燃气-蒸汽联合循环系统整体的内部?损为76.06%

不可避免?损为86.33%;系统大部分内部?损和不可逆?损发生在燃烧室

分别为209.0、221.8 MW;燃烧室和燃气透平亦有16.8、12.8 MW的可避免?损。研究结论可为系统节能改造及新系统设计提供参考。

Abstract

As the supplement and expansion of the conventional exergy analysis method

the advanced exergy analysis method can reveal the internal reason of the exergy destruction of various parts of the gas-steam combined cycle system in more depth. The main components of gas-steam combined cycle are analyzed by the advanced exergy analysis method. Additionally

the exergy destruction is classified into endogenous exergy destruction

exogenous exergy destruction

avoidable exergy destruction and unavoidable exergy destruction. The results show that the endogenous exergy destruction rate is 76.06% and the unavoidable exergy destruction rate is 86.33% in the gas-steam combined cycle system under the design conditions. Besides

most of the endogenous exergy destruction and unavoidable exergy destruction occur in the combustion chamber

which are respectively 209.0 MW and221.8 MW. Moreover

the avoidable exergy destruction of combustion chambers and gas turbines are 16.8 MW and12.8 MW

respectively. This research conclusions can provide reference for the transformation of system energysaving and the design of the new system.

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