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Thermoeconomic cost analysis on operation strategies of gas turbine combined cycle under off-design conditions
Case Studies in Thermal Engineering ( IF 6.8 ) Pub Date : 2021-11-11 , DOI: 10.1016/j.csite.2021.101617
Zhen Wang 1 , Liqiang Duan 1 , Zuxian Zhang 1
Affiliation  

In this paper, the thermoeconomic cost model of a typical GTCC system is established based on the structure theory of thermoeconomics. Because the operation strategy is the basis of the research on the design/off-design condition of GTCC unit. Therefore, the GTCC thermoeconomic performances with different strategies using the inlet guided valve (IGV) control are compared based on the GTCC cost model to analysis the influence of the main parameters on the unit thermoeconomic cost of each component. The variation rules of the thermoeconomic performances of the GTCC unit under design/off-design operating conditions influenced by the operating strategy and ambient temperature are revealed. The results show that the GTCC with the IGV T3-650-F operation strategy has the lowest thermoeconomic cost. Changing the operation strategy of gas turbine (GT) can reduce the generator (GEN) unit thermoeconomic cost. And higher GT inlet/outlet temperature is helpful to reduce the thermoeconomic cost of combined cycle under off-design conditions. The investment on the steam turbine (ST) and the irreversibility of the combustion chamber (CC) have the important influence on the thermoeconomic cost of GTCC system. Reducing the air compressor (AC) inlet air temperature can reduce the thermoeconomic cost of GTCC system.



中文翻译:

非设计工况下燃气轮机联合循环运行策略的热经济成本分析

本文基于热经济学的结构理论,建立了典型GTCC系统的热经济学成本模型。因为运行策略是GTCC机组设计/非设计工况研究的基础。因此,在GTCC成本模型的基础上,比较了采用入口导向阀(IGV)控制的不同策略下的GTCC热经济性能,分析了主要参数对各组件单位热经济成本的影响。揭示了受运行策略和环境温度影响的设计/非设计运行条件下GTCC机组热经济性能的变化规律。结果表明,采用 IGV T3-650-F 运行策略的 GTCC 具有最低的热经济成本。改变燃气轮机(GT)的运行策略可以降低发电机(GEN)机组热经济成本。较高的燃气轮机进/出口温度有助于降低非设计条件下联合循环的热经济成本。汽轮机(ST)的投资和燃烧室(CC)的不可逆性对GTCC系统的热经济成本有重要影响。降低空气压缩机(AC)入口空气温度可以降低 GTCC 系统的热经济成本。汽轮机(ST)的投资和燃烧室(CC)的不可逆性对GTCC系统的热经济成本有重要影响。降低空气压缩机(AC)入口空气温度可以降低 GTCC 系统的热经济成本。汽轮机(ST)的投资和燃烧室(CC)的不可逆性对GTCC系统的热经济成本有重要影响。降低空气压缩机(AC)入口空气温度可以降低 GTCC 系统的热经济成本。

更新日期:2021-11-11
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