中文摘要：

基于DPM离散模型、collision液滴碰撞模型和breakup液滴破碎模型,对雾化加湿器内的液滴雾化及气液两相间的热质耦合传递过程进行仿真模拟;对不同操作条件下加湿器的出口相对湿度、液滴的蒸发量及蒸发率等进行分析。结果表明,初始海水温度对加湿效果影响较小,初始空气速度和温度对加湿性能影响很大。当喷雾质量流量为3.6 kg/h,初始热空气温度为90℃,初始空气速度为4~5 m/s时,加湿器的蒸发率能达到50%以上,加湿器的出口相对湿度能达到80%以上。研究可为新型喷雾加湿除湿海水淡化系统加湿效果的提高奠定理论基础。

英文摘要：

The atomization field of humidifier, the droplets heat and mass transfer process were simulated with fluent soft packages, based on discrete phase droplet evaporation model, breakup and collision model. The outlet relative-humidity, the mass of evaporation and the evaporation rate were analyzed under different operating conditions. As a result, the initial water temperature had less effect on evaporation compared with the temperature and velocity of humidity air. When the mass flow rate of spray was 3.6 kg/h, the initial hot air temperature 90 ℃, the velocity of air 4-5 m/s, the humidifier evaporation rate could reach more than 50% and the outlet relative-humidity could reach more than 80%. This research will provide a theoretical basis on improving the humidifier performance of spray desalination.