基于氨-水-溴化锂三元工质氨吸收制冷的已有研究，提出电渗析方法分离氨-水-溴化锂三元溶液中溴化锂的设想，使溴化锂在溶液循环中保留在发生器，尽量少进入吸收器，保持其对发生过程的强化，减弱或消除对吸收过程的抑制，进一步提升三元工质氨吸收制冷的性能系数。通过理论分析电渗析分离三元溶液中溴化锂的传热传质规律，建立溴化锂分离的传质数学模型，阐明膜参数(电导率，迁移数、扩散系数)、溶液参数(温度、压力、浓度、流速)及电参数(电压、电流)对分离特性的影响机理；搭建电渗析分离实验装置，获得吸收式制冷工况下溴化锂分离的特性数据，验证并完善电渗析分离溴化锂的传质计算模型；优选三元工质氨吸收制冷高温高压工况下具有高溴化锂分离效率的离子交换膜，将其电渗析分离模型与三元工质氨吸收式制冷的热力学模型结合，分析电渗析分离溴化锂对制冷性能的影响规律，为明确电渗析分离溴化锂对三元工质氨吸收式制冷性能提升的机理提供理论依据。

Based on the research about NH3-H2O-LiBr ammonia absorption refrigeration cycle of other experts, electrodialysis method was proposed to separate LiBr from the NH3-H2O-LiBr ternary solution stream entering absorber from generator, so as to strengthen its positive effect in generation process and reduce or eliminate the inhibition of LiBr in absorption process. After theoretical analysis of heat and mass transfer mechanism on LiBr separation by electrodialysis from the ternary solution, A mathematical model of mass transfer will be established to describe the LiBr separation effectivity from NH3-H2O-LiBr ternary solution under different membrane specification (conductivity, ion transport number ,diffusivity) solution parameters(temperature, pressure, concentration, flow rate) and electrodialysis parameters(voltage, current). An electrodialysis experimental system for LiBr separation will be built, the characteristic data of LiBr separation by electrodialysis under working condition of ammonia absorption refrigeration cycle will be obtained in order to verify and optimize the heat and mass transfer model of LiBr separation by electrodialysis. And then the best ion exchange membranes for LiBr separation under different working conditions will be selected. The heat and mass transfer models of LiBr separation in electrodialysis device will be integrated with the thermodynamic model of NH3-H2O-LiBr ternary working fluid ammonia absorption refrigeration cycle to study the performance of the NH3-H2O-LiBr ammonia absorption refrigeration system with electrodialysis device and the influence of LiBr separation by electrodialysis device on the performance of NH3-H2O-LiBr ammonia absorption refrigeration will be concluded. This research provides a theoretical fundamental for analyzing the influence of LiBr separation by electrodialysis on improving the performance of NH3-H2O-LiBr ammonia absorption refrigeration system.