恒温热源空间不可逆闭式简单燃气轮机循环功率优化

Power Optimization of a Constant-Temperature Heat Reservoir Irreversible Simple Gas Turbine Cycle for Space Power Plant

空间简单燃气轮机循环动力装置由三部分组成:一是反应器,二是普通闭式简单燃气轮机循环模型,包括:压缩机、透平、蒸发器、工质和热源之间的换热器,三是低温热源侧的辐射散热器,用于向宇宙空间散热。本文建立了恒温热源空间不可逆简单闭式燃气轮机循环模型,导出了循环的热效率和输出功率。当散热器和两个换热器的总传热面积给定,通过优化两个换热器和散热器间的面积分配,得到了该装置的最大功率;通过优化低温热源温度,得到了装置的双重最大功率。

A simple gas turbine cycle for space power plant includes three parts:the first is a reactor,the second is closed gas turbine cycle with a compressor,a turbine and two heat exchangers,and the third is a radiator panel to dissipate heat to cosmic space.In this paper,an irreversible simple closed gas turbine cycle model for space power plant is established,and thermal efficiency and power output of the cycle are derived.When total heat transfer area of radiator panel and two heat exchangers is fixed,the maximum power output of the plant is obtained by optimizing area distributions among two HEXs and radiator panel,and the double maximum power output is obtained by optimizing temperature of the low temperature heat sink.