Thermodynamic Cycle and Performance of Parallel Hybrid Turbofan Engine

被引：0

作者：

Liu G.-B. ^{[1
]}

Wang B.-Y. ^{[1
]}

Wang X.-Y. ^{[1
]}

She Y.-F. ^{[2
]}

Xing Y.-R. ^{[2
]}

Shuai S.-J. ^{[1
]}

机构：

[1] Institute for Aero Engine, Tsinghua University, Beijing

[2] AECC Commercial Aircraft Engine Co.，Ltd, Shanghai

来源：

Tuijin Jishu/Journal of Propulsion Technology | 2023年 / 44卷 / 04期

关键词：

Numerical simulation; Parallel hybrid propulsion system; Steady-state performance; Thermodynamic cycle; Turbofan engine;

D O I：

10.13675/j.cnki.tjjs.2211089

中图分类号：

学科分类号：

摘要：

In order to determine the efficiency of energy utilization and the variation rule of steady-state performance for a parallel hybrid turbofan engine by introducing different amounts of electric power，the source of effective cycle work was analyzed in theory and the efficiency of fuel and electric power were defined respectively. Based on the CFM56-7B26 turbofan engine，a parallel hybrid turbofan engine model was developed using PROOSIS，and the steady-state engine performance at different degrees of hybridization was studied. It is found that the type of core thermodynamic cycle in parallel hybrid turbofan engines is still a real Brayton cycle. The con⁃ tribution of electric power to the bypass thrust is much greater than that to the core thrust. And the efficiency of electric power is much higher than that of fuel，which is the key factor to save energy for a parallel hybrid turbo⁃ fan engine. As the degree of hybridization increases，the bypass ratio increases but the turbine inlet temperature and overall pressure ratio decrease. The steady-state operating states of different components are affected with the movement of the steady-state operating point and lead to a possible drop in the efficiency. Because of the electric power supply and its high efficiency，both the fuel and energy consumption of the parallel hybrid turbofan engine are lower than the conventional turbofan engine. © 2023 Journal of Propulsion Technology. All rights reserved.

引用

共 22 条

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