恒温热源条件下实际回热式布雷顿循环的功率密度特性

用有限时间热力学方法分析恒温热源条件下实际回热式布畦顿循环的功率密度特性，计入工质与高，低温侧换热器的热阻损失，压气机，涡轮机的不可逆压缩和膨胀损失，以及管路系统中的压力损失，导出了功率密度与压比间的解析式，并通过数值计算将对应于最大功率密度时的一些参数与对应于最大功率时的同样参数进行了比较。

Power Density Performance of Real Regenerated Brayton Cycles Coupled to Constant-Temperature Heat Reservoirs

Performance analysis on power density of real regenerated.Brayton cycles coupled to constant temperature heat reservoirs is conducted using finite time thermodynamics in this paper.The analytical formulas about the cor relations between power density and pressure ratio are derived.In the analysis,irreversibilities involve the heat resistance losses in the hot and cold side heat exchangers and regenerator,the irreversible compression and expansion losses in the compressor and turbine,and the pressure losses in the piping.Some parameters of the cycle corresponding to the maximum power density are compared with the same parameters corresponding to the maximum power by numerical examples.