To overcome the shortages of traditional working pairs (LiBr/H₂O and NH₃/H₂O) for absorption-refrigeration systems (ARSs), novel working pairs consisting of low global warming potential (GWP) hydrofluorocarbons difluoroethane (R152a) and difluoromethane (R32) plus low-viscosity ionic liquid N,N‑diethyl-2‑methoxy-N-methylethan-1-aminium bis((trifluoromethyl)sulfonyl)amide ([DEME][TFSI]) are studied. Firstly, solubilities of R152a and R32 in [DEME][TFSI] are measured by the isochoric saturation method in the temperature range of 293 K ∼ 343 K and pressure range of 0.14 MPa ∼ 1.664 MPa with the relative expanded uncertainty of 0.03. A high-GWP hydrofluorocarbon 1,1,1-trifluoroethane (R143a) is involved in the experiment for further comparison. The non-random two-liquid model is used to correlate the vapor-liquid equilibrium data with average absolute relative errors of 0.55 % (R152a), 0.58 % (R32), and 0.94 % (R143a), respectively. [DEME][TFSI] shows its low viscosity and good solubility of hydrofluorocarbons by contrast with conventional ionic liquids. A refrigerant solubility rank order in [DEME][TFSI]: R152a > trans-1,3,3,3-tetrafluoropropene (R1234ze(E)) > R32 > 2,3,3,3-tetrafluoro-1-propene (R1234yf) > R143a is obtained from the comparison. This work provides the possibility to apply low-GWP working pairs R152a/[DEME][TFSI] and R32/[DEME][TFSI] in ARSs.

为了克服吸收式制冷系统（ARS）传统工作对（LiBr/H ₂ O和NH ₃ /H _{2 O）的不足，由低全球变暖潜值（GWP）氢氟碳化合物二氟乙烷（R152a）和}二氟甲烷组成的新型工作对研究了(R32)加低粘度离子液体N,N-二乙基-2-甲氧基-N-甲基乙烷-1-氨基双((三氟甲基)磺酰基)酰胺([DEME][TFSI])。首先，采用等容饱和法测定了R152a和R32在[DEME][TFSI]中的溶解度，温度范围为293 K ∼ 343 K，压力范围为0.14 MPa ∼ 1.664 MPa，相对扩展不确定度为0.03。实验采用高GWP氢氟碳化合物1,1,1-三氟乙烷(R143a)进行进一步比较。非随机双液模型用于将气液平衡数据与平均绝对相对误差分别为 0.55% (R152a)、0.58% (R32) 和 0.94% (R143a) 进行关联。与传统离子液体相比，[DEME][TFSI]表现出低粘度和良好的氢氟烃溶解度。[DEME][TFSI]中的制冷剂溶解度排序：R152a>反式1,3,3,3-四氟丙烯(R1234ze(E))>R32>2,3,3,3-四氟-1-丙烯(R1234yf )>R143a 由比较得到。这项工作提供了在 ARS 中应用低 GWP 工作对 R152a/[DEME][TFSI] 和 R32/[DEME][TFSI] 的可能性。