DME/DEMEIITFSII溶解度实验研究与吸收式制冷性能分析

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中图分类号：TB9;O552.421 文献标志码：A

文章编号：1674-5124（2025）09-0066-08

Abstract： In response to the limitations of conventional LiBr/H2O and NH3/H2O Working pairs in absorption refrigeration， dimethyl ether （DME） paired with ionic liquids has emerged as a promising and eco-friendly alternative. This study investigated the solubilityofDME in the low-viscosity ionic liquid[DEME][TFSI]over a temperature range of 293.15-343.15K and a pressure range of 0.045-0.857 MPa using the isovolumetric saturation method.The experimental data were corelated using the NRTL model. Furthermore， the thermodynamic performance of single-effect absorption and absorption-compression refrigeration systems using DME/[DEME][TFSI] as the working pair was analyzed and compared with systems using R1234yf and R1234ze（E）. The results show that the NRTL equation agrees wellwith the experimental data， with an AARD of 1.9% . Both systems exhibit peak COP and ECOP with increasing generation temperature， while COP increases monotonically with evaporation temperature and ECOP reaches a maximum. The absorptioncompression system ofers a wider operating temperature range and higher refrigeration capacity. The DME/[DEME][TFSI] system achieves a COP of 0.56 and an ECOP of 0.37，outperforming those of R1234yf and R1234ze（E）， demonstrating greater application potential.

Keywords：dimethyl ether; ionic liquids;solubility;absorptionrefrigeration

0引言

与传统压缩式制冷系统相比，吸收式制冷系统可以由工业废热、太阳能等低品位热能驱动，具有能耗低、噪音小等优势[1]。（剩余11139字）