Power and efficiency optimizations for an open cycle two-shaft gas turbine power plant

作     者：Lingen Chen Huijun Feng Yanlin Ge Shuangshuang Shi 

作者机构：Institute of Thermal Science and Power EngineeringWuhan Institute of TechnologyWuhan 430205China Hubei Provincial Engineering Technology Research Center of Green Chemical EquipmentWuhan 430205China School of Mechanical&Electrical EngineeringWuhan Institute of TechnologyWuhan 430205China 

出 版 物：《Propulsion and Power Research》 (推进与动力（英文）)

年 卷 期：2023年第12卷第4期

页      面：457-466页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 0807[工学-动力工程及工程热物理] 070303[理学-有机化学] 0802[工学-机械工程] 0703[理学-化学] 0825[工学-航空宇航科学与技术] 

基　　金：This paper is supported by the National Natural Science Foundation of China(Project Nos.52171317 and 51779262).The authors wish to thank the reviewers for their careful unbiased and constructive suggestions which led to this revised manuscript 

主　　题：Two-shaft gas turbine power plant Efficiency Power Area distribution Pressure drop Finite-time thermodynamics 

摘      要：In finite-time thermodynamic analyses for various gas turbine cycles,there are two common models:one is closed-cycle model with thermal conductance optimization of heat exchangers,and another is open-cycle model with optimization of pressure drop(PD)*** of optimization also with searching optimal compressor pressure ratio(PR).This paper focuses on an open-cycle model.A two-shaft open-cycle gas turbine power plant(OCGTPP)is modeled in this *** of power output(PP)and thermal conversion efficiency(TCE)are deduced,and these performances are optimized by varying the relative PD and compressor *** results show that there exist the optimal values(0.32 and 14.0)of PD and PR which lead to double maximum dimensionless PP(1.75).There also exists an optimal value(0.38)of area allocation ratio which leads to maximum TCE(0.37).Moreover,the performances of three types of gas turbine cycles,such as one-shaft and two-shaft ones,are *** the relative pressure drop at the compressor inlet is small,the TCE of third cycle is the biggest one;when this pressure drop is large,the PP of second cycle is the biggest *** results herein can be applied to guide the preliminary designs of OCGTPPs.