Treating high salt and high organic matter wastewater (HHW) generated during rapid socio-economic development is a significant challenge. This study aims to optimize a closed-cycle low-temperature evaporation (CCLE) system using mathematical modelling to be adapted to industrial applications. By using mathematical modelling and computational fluid dynamics (CFD), this study investigated the operating mechanism of the system under different operating conditions. Parametric analysis shows that increasing the compressor evaporation temperature and decreasing the condensation temperature is conducive to improving the performance of the heat pump unit, thereby increasing the wastewater treatment efficiency of the system and that a smaller heat transfer coil windward area is conducive to heat and mass transfer within the humidifier. The unique characteristics of the CCLE system are identified, and the wastewater treatment process under various operating conditions is explained. These findings may provide supporting information for the treatment of HHW by the CCLE system.

中文翻译：

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基于数学模型和CFD的闭式循环低温蒸发系统优化研究


社会经济快速发展过程中产生的高盐、高有机物废水（HHW）的处理是一项重大挑战。本研究旨在利用数学模型优化闭式循环低温蒸发（CCLE）系统，以适应工业应用。本研究利用数学建模和计算流体动力学（CFD），研究了系统在不同运行条件下的运行机制。参数分析表明，提高压缩机蒸发温度、降低冷凝温度有利于提高热泵机组的性能，从而提高系统的废水处理效率，且较小的传热盘管迎风面积有利于传热传质在加湿器内转移。确定了 CCLE 系统的独特特性，并解释了各种操作条件下的废水处理过程。这些发现可能为 CCLE 系统治疗 HHW 提供支持信息。