内可逆闭式中冷回热布雷顿循环功率效率特性

Power and efficiency characteristic for an endoreversible closed intercooled regenerated Brayton cycle

应用有限时间热力学的方法分析了恒温热源条件下内可逆闭式中冷回热布雷顿循环的无因次功率和效率特性,导出了无因次功率及效率的解析式,通过数值计算,得到了分别对应于循环功率和效率的最佳中间压比分配,并研究了中冷度、回热度以及高低温侧换热器有致度对循环性能的影响。

Finite time thermodynamics is applied to analyze the performance of an endoreversible intercooled regenerated Brayton cycle coupled to constant temoerature heat reservoirs. The expressions of dimensionless power output and efficiency are deduced. The intercooled pressure ratio is optimized for maximizing the cycle power output and efficiency. The influences of the effectivenesses of the intercooled exchanger, the regenerator, and the hot-side and cold-side heat exchangers on the performance of the Brayton cycle are analyzed by detailed numerical examples.