This study proposes the use of hydrofluoroolefins and organic absorbents mixtures as a working fluid pair in a single-effect absorption refrigeration system. In the refrigeration cycle, the 2,3,3,3-tetrafluoropropylene (R1234yf) is used as a refrigerant, and the triethylene glycol dimethyl ether (DMETrEG) and N-methyl-2-pyrrolidone (NMP) are used as absorbents. The working fluid’s thermophysical properties and the verified thermodynamic models are presented in this paper. This study illustrates the effect of the generator temperature (330.15–365.15 K), absorber temperature (293.15–313.15 K) and evaporator temperature (268.15–283.15 K) on the coefficient of performance (COP), the circulation ratio and the solution concentrations. Among the most prominent results of this research are that the COP is between 0.053-0.409 for the mixture containing the DMETrEG, while it is between 0.025-0.333 for the mixture containing NMP. The R1234yf-DMETrEG mixture is recommended based on the overall performance, circulation ratio and stability, followed by R1234yf-NMP mixture. The effectiveness of R1234yf-organic absorbents is lower than those of R134a and R152a with the same absorbents. Therefore, the incorporation of a compressor to assist the absorption cycle can improve the COP of the cycle and extend the operation range of the proposed R1234yf-DMETrEG mixture.

本研究建议在单效吸收式制冷系统中使用氢氟烯烃和有机吸收剂混合物作为工作流体对。在制冷循环中，2,3,3,3-四氟丙烯（R1234yf）作为制冷剂，三甘醇二甲醚（DMETrEG）和N-甲基-2-吡咯烷酮（NMP）作为吸收剂。本文介绍了工作流体的热物理特性和经过验证的热力学模型。本研究说明了发生器温度 (330.15–365.15 K)、吸收器温度 (293.15–313.15 K) 和蒸发器温度 (268.15–283.15 K) 对性能系数 (COP)、循环比和溶液浓度的影响。这项研究最突出的结果是 COP 在 0.053-0 之间。含有 DMETrEG 的混合物为 409，而含有 NMP 的混合物为 0.025-0.333。根据整体性能、循环比和稳定性推荐 R1234yf-DMETrEG 混合物，其次是 R1234yf-NMP 混合物。R1234yf-有机吸收剂的有效性低于具有相同吸收剂的R134a和R152a。因此，结合压缩机来辅助吸收循环可以提高循环的 COP 并扩大所提出的 R1234yf-DMETrEG 混合物的操作范围。R1234yf-有机吸收剂的有效性低于具有相同吸收剂的R134a和R152a。因此，结合压缩机来辅助吸收循环可以提高循环的 COP 并扩大所提出的 R1234yf-DMETrEG 混合物的操作范围。R1234yf-有机吸收剂的有效性低于具有相同吸收剂的R134a和R152a。因此，结合压缩机来辅助吸收循环可以提高循环的 COP 并扩大所提出的 R1234yf-DMETrEG 混合物的操作范围。