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基于氨水工质对的吸收式制冷和热泵技术中,氨和水分离时需要精馏而产生大量能耗。针对这一缺陷,本文提出改良措旋:将离子液体[P4444]Cl作为添加剂加入氨水中,组成分离能耗较低的新工质体系。利用等温合成法,本工作测定了[P4444]Cl水溶液浓度为33.33%(质量分数)的NH3-H_2O-[P4444]Cl体系在温度范围0~60℃、压力范围0~650kPa时的气液相平衡数据,并采用多项式方程对实验数据进行拟合得到模型参数。最后,本工作还讨论了该工质体系的其他热物性作为进一步开发的参考。
Absorption refrigeration and heat pump technology based on the pair of ammonia working medium, ammonia and water need to be separated when distillation and produce a large amount of energy consumption. In response to this defect, this paper proposes an improved spin-off: adding ionic liquid [P4444] Cl as an additive to ammonia to form a new working fluid system with lower energy consumption. The isothermal synthesis method was used to measure the gas-liquid phase of NH3-H_2O- [P4444] Cl system with [P4444] Cl concentration of 33.33% (mass fraction) in the temperature range 0 ~ 60 ℃ and pressure in the range of 0 ~ 650kPa Balance the data, and use the polynomial equation to fit the experimental data to obtain the model parameters. Finally, this work also discusses other thermal properties of the working fluid system as a reference for further development.