不可逆Miller循环的功率效率特性

Power and efficiency characteristics for irreversible Miller cycle

用有限时间热力学的方法考虑空气标准 Miller循环 ,导出存在摩擦及传热损失的空气标准 Miller循环的功率与压缩比、效率与压缩比 ,以及功率和效率的最佳特性关系 ;同时由数值计算分析了摩擦和传热对循环性能的影响特点。结论包含了各种特定条件下不同循环的特性 。

The performance of an air standard Miller cycle with heat transfer loss and friction like term loss was analyzed by using finite time thermodynamics. The relations between the power output and the compression ratio, the thermal efficiency and the compression ratio, as well as the optimal relation between the power output and the efficiency of the cycle are derived. Moreover, the influences of heat transfer loss and friction loss on the cycle performance were analyzed by detailed numerical examples. The results obtained herein include the performance characteristics of different cycles in given conditions and therefore have universal guidance.