Abstract Desiccant solution regeneration is an important task of the desiccant solution air conditioning system. The regeneration temperature of conventional packed-bed regenerator is high, which consumes a lot of thermal energy to regenerate the desiccant solution and prohibits the potential use of some low-grade and renewable energy as heat source. The ultrasonic atomization technology may be an effective way to reduce the regeneration temperature. In this paper, an ultrasonic atomization desiccant solution regenerator (UADR) was designed and studied. A theoretical model was developed to predict the heat and mass transfer characteristics of the UADR. The model was experimentally validated and used to investigate the influence of inlet parameters (e.g., air temperature, air humidity, solution concentration, solution temperature, gas-liquid ratio, droplet diameter and droplet jet velocity) on the outlet parameters and regeneration performance of the UADR. The results manifest that the contact area between the air and the desiccant solution droplets has great effect on the regeneration performance, and there exists an optimum droplet diameter for the best regeneration performance. In comparison with packed-bed regenerator, the regeneration temperature of UADR can drop from 3.1 to 6.6 °C.

中文翻译：

---

干燥剂溶液超声雾化再生的建模与参数研究

摘要 干燥剂溶液再生是干燥剂溶液空调系统的一项重要任务。常规填充床再生器再生温度高，再生干燥剂溶液消耗大量热能，阻碍了一些低品位可再生能源作为热源的潜在利用。超声雾化技术可能是降低再生温度的有效途径。本文设计并研究了一种超声波雾化干燥剂溶液再生器（UADR）。开发了一个理论模型来预测 UADR 的传热和传质特性。该模型经过实验验证，用于研究入口参数（如空气温度、空气湿度、溶液浓度、溶液温度、气液比、液滴直径和液滴喷射速度）对 UADR 出口参数和再生性能的影响。结果表明，空气与干燥剂溶液液滴的接触面积对再生性能影响很大，存在最佳再生性能的最佳液滴直径。与填充床再生器相比，UADR 的再生温度可以从 3.1°C 下降到 6.6°C。