Abstract A comparative study is conducted to find that there are significant prediction deviations of single liquid desiccants vapor pressure at high concentration and regeneration temperature (high temperature) based on existing typical models. Some factors affecting water activity are not taken into account in these models, and they become more significant at high temperature and high concentration. This paper proposes a modified LIQUAC model to improve the prediction accuracy of single liquid desiccants vapor pressure at high temperature and high concentration. In the modified thermodynamic model, the middle-range interaction is derived by enhancing temperature and concentration dependence. By analyzing the prediction results of three typical liquid desiccants, it is found that the theoretical framework of the novel model is better than that of two typical models (using same data base for parameterization) at high temperature and high concentration. The interaction parameters in the modified model have precise physical meanings and make the model can be extended to other electrolyte solutions.

中文翻译：

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用于预测高浓度和再生温度下单一液体干燥剂蒸气压的改进 LIQUAC 模型

摘要 通过对比研究发现，在现有典型模型的基础上，单一液体干燥剂在高浓度和再生温度（高温）下的蒸气压存在显着的预测偏差。一些影响水分活度的因素在这些模型中没有考虑，在高温和高浓度下变得更加显着。本文提出了一种改进的LIQUAC模型，以提高高温高浓度下单一液体干燥剂蒸气压的预测精度。在修改后的热力学模型中，中程相互作用是通过增强温度和浓度依赖性来推导出来的。通过分析三种典型液体干燥剂的预测结果，发现新模型的理论框架优于高温高浓度下的两个典型模型（使用相同的数据库进行参数化）。修正模型中的相互作用参数具有精确的物理意义，使模型可以推广到其他电解质溶液。