变质量体系能量转换及储存系统充能过程动态特性研究

给出了变质量体系能量转换及储存技术的基本概念．讨论了在变质量体系能量转换及储存技术充能过程中因质量变化所产生的内部扰动的系统充能过程的动态特性。结果表明，当充能始、终溶液储罐内溴化锂质量分数差为0．11时，蓄能系统中仅用了一个0．6m^3的溶液储罐和一个0．17m^3的水储罐可储存109kWh的制冷潜能，转移电网负荷23．3kWh，蓄能系统运行的COP值可达到4．67。

Study of dynamic behavior of variable mass energy transformation and storage technology during energy charging process

A new technology of variable mass energy transformation and storage was proposed. The basic idea is to transfer the electric energy firstly into the chemical potential of working fluids and store as a form of the potential during off-peak time. Then the potential will be transformed into cold or heat energy needed during peak time. As there is only one working solution storage tank in the energy transformation and storage system, the mass of solution in the tank changes continuously during energy charging or discharging process, which makes the operation parameters of the system change. The dynamic behavior caused by internal turbulence because of the mass changing during energy charging process was studied and discussed. When the difference of the LiBr mass factor in the solution storage tank between the beginning and ending of the energy charging process is 0. 1, the energy transformation and storage system with a 0. 6 m3 solution storage tank and a 0. 17 m3 water storage tank can store up to about 109 kWh refrigerating potential and shift about 23. 3 kWh electric load in off-peak time. The COP of the system operation can be as high as 4. 67.