中文摘要：

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,本文提出改良措施：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。

英文摘要：

In traditional absorption refrigeration and heat pump technologies using NHa-H20 working pair, high energy consumption occurs when vapor NHa was separated from the solution. This work proposed an ionic liquid [P4444]C1 as additive to compose new working fluids NH3-H20- [P4444]C1 and to reduce the energy consumption. [P4444]C1 aqueous solution with mass fraction of 33.33% were prepared to absorb NH3 by the isothermal synthesis method under temperature of 0-60℃ and pressure of 0-650 kPa. The vapor-liquid equilibrium data was obtained and then regressed by an analytical polynomial equation, the model parameters of which were calculated. Finally, other thermophysical properties of the new working fluids were discussed as a reference for further development.