不可逆闭式布雷顿循环有限时间热力学性能的解析公式

Analytical Expressions of the Finite-time Thermodynamic Performance for Irreversible Closed Brayton Power Cycle

在作者原先工作的基础上，导出恒温和变温热源条件下不可逆闭式布雷顿循环的功率输出、热效率与压比间的解析公式，由此可导出最大功率和最大效率对应的最佳压比，及在一定压比下获得最佳功率和效率的热导率最佳分配和工质与热源间热容率的最佳匹配．

On the basis of the previous work, this paper derived:(1)the analytical expressions between power output and efficiency as well as pressure ratio of irrevelsible closed Brayton power cycle under constant-temperature and variable temperature heat reservoirs conditions: (2)the optimum pressure ratios corresponding to maximum power and efficiency; (3)the optimum distribution of heat conductivities and matching between working fluids and variable-temperature heat reservoirs under given pressure ratios.