热阻和内不可逆性对实际闭式燃气轮机回热循环性能的影响(续)

Effects of Heat Resistance and Internal Irreversibility on the Performance of Real Closed Gas Turbine Regenerated Cycles

用有限时间热力学方法分析实际热机循环性能，计入工质与高、低温热源间换热器和回热器的热阻损失，压气机和涡轮机中的不可逆压缩、膨胀损失，和管路系统中的压力损失，导出变温热源条件下实际闭式燃气轮机回热循环的功率、热效率与压比间的解析式。

Performance analysis of a real power cycle has been performed using finite time thermodynamics in this paper. The analytical formulas about the relations between power output and pressure ratio, and between efficiency and pressure ratio of a real closed gas turbine regenerated cycle coupled to variable temperature heat reservoirs are derived. In the analysis, the irreversibilities involve the heat resistance losses in the hot and cold side heat exchangers and the regenerator, the irreversible expansion and compression losses in the turbine and compressor, and the pressure drop loss in the pipe and system. The influences of the internal and external irreversibilities on the power output and efficieny of the cycle are analysed by detailed numerical examples.