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以氨水为工质对的吸收式制冷循环和热泵技术中,分离氨和水时需要大量能耗。本文将离子液体P(CH_3)_4Cl作为添加剂加入氨水中,组成分离能耗较低的三元工质体系。利用等温合成法实验系统,测定了NH_3-H_2O-P(CH_3)_4Cl体系在温度范围293.15~333.15 K、压力范围0~700 kPa.时的气液相平衡数据;然后采用扩展的Antoine方程对实验数据进行拟合,得到了可靠的拟合精度和方程的模型参数;最后,基于相平衡比讨论P(CH_3)_4Cl的添加效果,测定密度和黏度数据,作为进一步开发该工质体系的参考。
Absorption refrigeration cycles and heat pump technologies that utilize ammonia as the working fluid pair require a significant amount of energy to separate ammonia and water. In this paper, ionic liquid P (CH_3) _4Cl is added as an additive to ammonia water to form a ternary system with low energy consumption. The gas-liquid equilibrium data of NH_3-H_2O-P (CH_3) _4Cl system at temperature range of 293.15 ~ 333.15 K and pressure range of 0 ~ 700 kPa were determined by isothermal synthesis experiment system. Then the extended Antoine equation Finally, based on the phase equilibrium ratio, the effect of P (CH_3) _4Cl addition was discussed, and the density and viscosity data were measured to be used as a reference for further development of the working fluid system.