超声波作用下海水淡化温度响应

为了寻求超声波雾化作用下蒸发的最适宜温度，对不同盐度情况下海水蒸发速率的温度响应进行试验研究；建立了超声波雾化作用下蒸发温度响应模型，分析了温度对超声波海水蒸发速率影响的微观机制．经过试验研究发现：超声波雾化作用下蒸发的最适宜温度为50-65℃；雾化过程中温度和蒸发速率呈很好的线性关系．超声波雾化过程中能够产生动量积聚，在超声波和表面张力波两者频率相近时激发共振，从而克服海水表面张力，加速水分子团簇雾化和蒸发．这一机制为海水淡化技术的研发提供了新的思路．

Temperature Response in Ultrasonic Sea Water Desalination

In order to probe the appropriate temperature for the evaporation of ultrasonic atomization,an experimental study about the temperature response to the sea water evaporation rate in different salinities is conducted.The response model of evaporation temperature of ultrasonic atomization is established and the micro-mechanism of the effect of temperature on the ultrasonic sea water evaporation rate analyzed.It suggests that the suitable temperature for evaporation of ultrasonic atomization is from 50℃ to 65℃ and has proved the linear relationship between the temperature and the evaporation rate in the progress of ultrasonic evaporation.When ultrasonic and sea water capillary wave are in the same frequency,there will be a resonance phenomenon.Ultrasonic atomization increased the speed and acceleration of water molecule on the surface of liquid drops.More water molecules have enough energy in overcoming the surface tension and the rate of water evaporation and atomization were accelerated.This mechanism provides a new idea for the development of sea water desalination.