Thermodynamic Process Modeling and Parameter Influence of Closed Brayton Cycle Power Generation System

被引：0
|
作者：
Ma T.-L. [1 ,2 ]
Zhang Y.-J. [1 ]
Wang Z. [2 ]
Zhao W. [2 ]
Wang L.-G. [2 ]
机构：
[1] School of Vehicle and Mobility, Tsinghua University, Beijing
[2] Beijing Power Machinery Institute, Beijing
来源：
Tuijin Jishu/Journal of Propulsion Technology | 2022年 / 43卷 / 07期
关键词：
Available sensitivity analysis; Closed Brayton cycle; Parameter modeling; Power generation system; Thermodynamic process;
D O I：
10.13675/j.cnki.tjjs.210782
中图分类号：
学科分类号：
摘要：
For the thermodynamic process and parameter influence of closed Brayton cycle power generation system，the system thermodynamic process parameters modeling is studied，and the mathematical models of system power generating capacity，specific power and efficiency are developed. Then，the influence rules that the parameters including total turbine inlet temperature，turbine efficiency，total compressor inlet temperature，pressure ratio，compressor efficiency and total pressure recovery coefficient affect the specific power and efficiency of closed Brayton cycle power generation system，are studied. Taking the sensitivity and optimization potential of parameters into accounted，the available sensitivity is proposed，and the sensitivity analysis of specific power and efficiency of closed Brayton cycle power generation system is done. The results show that the power generating capacity and efficiency of closed Brayton cycle power generation system increase as the increase of total turbine inlet temperature，turbine efficiency，pressure ratio，compressor efficiency and total pressure recovery coefficient，and decreases as the increase of total compressor inlet temperature. Among the parameters including the total inlet temperature，pressure ratio and compressor efficiency of compressor，the total inlet temperature and efficiency of turbine，the total pressure recovery coefficient，and so on，the turbine efficiency is the most sensitive parameter for system specific power，and the pressure ratio is the most sensitive parameter for system efficiency. Considering the actual optimization potential，the total turbine inlet temperature is the most sensitive and available parameter for system specific power when the cycle fluid is determined，and the pressure ratio is the most sensitive and available parameter for system efficiency. © 2022 Journal of Propulsion Technology. All rights reserved.
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