中文摘要：

利用工作溶液浓度差储存的能量可转换成暖通、空调所需的热能、冷能或除湿能．以工作溶液为溴化锂水溶液时的闭式蓄能空调／供热系统为研究对象，通过阐述其工作原理和运行过程中储罐内溶液质量、质量分数、温度等参数随时变化，导致系统内各状态点溶液工作参数、各热力设备的工作负荷均发生变化的特点，建立起该蓄能系统充、释能过程的动态数学模型．其结果可为进一步数值研究、分析该蓄能空调／供热系统工作特性、设备负荷特性提供参考．

英文摘要：

Using the concentration difference of the working fluids, the stored energy can easily be transformed into heat, cold or dehumidifying energy that is necessary in heating, ventilating and air-conditioning （HVAC） engineering. The closed energy storage system for air-conditioning and heating using water-LiBr mixture as working fluids is presented and researched. The system working principle and flow are described. The mass, mass fraction and temperature of the working fluid in the storage tanks vary with the operation time. It results in different properties of the working fluid at the each state point and the loads of the thermal devices in the system changing. The dynamic models of the system working process are established, which are very helpful for understanding the characteristics and performance of the system and very useful for the devices design or selection.