Ternary mixture of fluoroethane (HFC‐161) + difluoromethane (HFC‐32) + N,N‐dimethylformamide (DMF) is a promising working fluid for absorption refrigeration system which is an important energy saving technology receiving more and more attention. Investigation on vapor–liquid equilibrium (VLE) is necessary for further study and the application in absorption system of the ternary mixture. Therefore, an experimental system with continuous vapor‐phase circulation is set up, measuring VLE data within temperature range of 283.15 to 323.15 K. The experimental data is correlated with Wilson and NRTL models, and BP‐ANN method, respectively. The calculating data of Wilson model has the largest relative deviation of 5.14% and average relative deviation of 2.65% for vapor pressure, being the best one. The deviation of molar fraction data obtained with BP‐ANN model has the best average relative deviation 3.07%. However, NRTL model provides a smooth predicted surface. The correlated parameters of the three models are given.

中文翻译：

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用于低级热驱动吸收式制冷系统的HFC-161 + HFC-32 + DMF三元混合物的汽液平衡

氟乙烷（HFC-161）+二氟甲烷（HFC-32）+ N，N-二甲基甲酰胺（DMF）的三元混合物是吸收制冷系统中很有希望的工作流体，它是一项重要的节能技术，受到越来越多的关注。进一步研究气液平衡（VLE）及其在三元混合物吸收系统中的应用是必不可少的。因此，建立了一个具有连续气相循环的实验系统，在283.15至323.15 K的温度范围内测量了VLE数据。该实验数据分别与Wilson模型和NRTL模型以及BP‐ANN方法相关。威尔逊模型的计算数据对蒸气压的最大相对偏差为5.14％，平均相对偏差为2.65％，是最好的。用BP‐ANN模型获得的摩尔分数数据的偏差的最佳平均相对偏差为3.07％。但是，NRTL模型提供了平滑的预测表面。给出了三个模型的相关参数。