Spray flash evaporation (SFE) technology is a promising way for efficient low-temperature desalination that can utilize waste heat or solar energy as heat source. In this paper, a solar driven-SFE desalination system enhanced by latent heat fluids is presented. The NaCl aqueous solution with addition of microcapsulated phase change material (MPCM) acts as the working fluid for thermal energy storage and the SFE process. Based on the physical properties measurements of the MPCM slurry, the flash evaporation characteristics of sprayed droplets were simulated and performances of the SFE desalination system were evaluated. The simulative results reveals that the temperature drop of droplets with MPCM may slow down during flash evaporation process, due to their higher effective heat capacity. Hence, by adding MPCM with mass fraction of 0.18 into the flash evaporation solution, the water production ratio could be increased by 23.1 %, and the unit energy consumption of the system reduced by 18.3 %. Furthermore, the effects of operating pressure the chamber and inlet superheat temperature on the SFE desalination system enhanced by MPCM were discussed, providing guidance for optimum design.

喷雾闪蒸（SFE）技术是一种利用废热或太阳能作为热源的高效低温脱盐技术。在本文中，提出了一种通过潜热流体增强的太阳能驱动的 SFE 海水淡化系统。添加了微胶囊相变材料 (MPCM) 的 NaCl 水溶液作为热能储存和 SFE 过程的工作流体。基于 MPCM 浆料的物理特性测量，模拟喷雾液滴的闪蒸特性并评估 SFE 脱盐系统的性能。模拟结果表明，由于具有较高的有效热容，使用 MPCM 的液滴在闪蒸过程中的温度下降可能会减慢。因此，通过添加质量分数为 0 的 MPCM。18进入闪蒸溶液，产水率可提高23.1%，系统单位能耗降低18.3%。此外，讨论了腔室工作压力和入口过热温度对 MPCM 增强的 SFE 脱盐系统的影响，为优化设计提供指导。