热漏对联合动力循环性能的影响

Effect of Heat Leak on the Performance of Combined Power Cycles

分析旁通热漏对联合动力装置最优性能的影响。在连续流内可逆联合循环模型中加入一热漏项，建立了不可逆联合循环模型，导出其功率与效率间最佳关系、最大功率及其相应的效率界限和最大效率对应的功率界限。分析表明热漏对其最优特性有很大影响，所建立的模型可以更好地预测联合动力装置性能。

Effect of bypass heat leak on the optimal performance of a combined power plant is examined in this paper. This is done by adding a heat leak term into an endoreversible combined cycle. The relation between optimal power output and efficiency, the maximum power and the corresponding efficiency and the maximum efficiency and the corresponding power output for a steedy state irreversible combined power plant are derived. The performance characteristics of the irreversible combined cycle is found to be deeply affected by the rate of heat leak. This model allows more reasonable prediction in the performance of an actual combined power plant.