The proposal of models that account for the irreversibilities within the core engine has been the topic of interest to quantify the useful energy available during its conversion. In this work, we analyze the energetic optimization and stability (local and global) of three power plants, nuclear, combined-cycle, and simple-cycle ones, by means of the Curzon–Ahlborn heat engine model which considers a linear heat transfer law. The internal irreversibilities of the working fluid measured through the r-parameter are associated with the so-called “uncompensated Clausius heat.” In addition, the generalization of the ecological function is used to find operating conditions in three different zones, which allows to carry out a numerical analysis focused on the stability of power plants in each operation zone. We noted that not all power plants reveal stability in all the operation zones when irreversibilities are considered through the r-parameter on real-world power plants. However, an improved stability is shown in the zone limited by the maximum power output and maximum efficiency regimes.

中文翻译：

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内部不可逆性在以最大 ε-生态函数工作的电厂模型的性能和稳定性中的作用

考虑核心引擎内不可逆性的模型的提议一直是量化其转换期间可用的有用能量的感兴趣的话题。在这项工作中，我们通过考虑线性传热定律的 Curzon-Ahlborn 热机模型分析了核电厂、联合循环电厂和单循环电厂三个电厂的能量优化和稳定性（局部和全局） . 通过测量的工作流体的内部不可逆性r-参数与所谓的“未补偿克劳修斯热”有关。此外，利用生态函数的泛化来寻找三个不同区域的运行条件，从而可以对每个运行区域的电厂稳定性进行数值分析。我们注意到，当通过r-真实世界发电厂的参数。然而，在受最大功率输出和最大效率范围限制的区域中，稳定性有所提高。