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基于利用低品位热源探求新的节能途径以降低海水淡化成本的目的,借用热管的高热流密度传热特性设计并搭建了盐溶液在真空条件下的雾化闪蒸水分离实验台,实验初步测试了影响水分离率的主要因素,分析了不同壁厚热管轴向的温度分布规律及传热性能。结果表明:喷雾特性、低品位热源温度等都是影响水分离率的重要因素;热管能迅速将热量传递给正处于闪蒸降温过程中的盐溶液液滴,即使在35~40℃的低品位热源驱动下,也可实现较高的水分离率;直径10 mm长450mm的热管导热功率最高可达150 W。
Based on the use of low-grade heat source to explore new energy-saving ways to reduce the cost of seawater desalination, the high heat flux density heat transfer characteristics of the heat pipe were used to design and set up the atomization flash-water separation experiment platform of salt solution under vacuum conditions. The main factors influencing water separation rate are analyzed, and the axial temperature distribution and heat transfer performance of different wall thickness heat pipes are analyzed. The results show that the spray characteristics and the temperature of low-grade heat source all play an important role in the water separation rate. The heat pipe can quickly transfer the heat to the droplet of salt solution which is in the process of flash cooling. Even in the low grade of 35-40 ℃, Heat-driven, but also to achieve higher water separation rate; diameter 10 mm long 450mm heat pipe thermal conductivity up to 150 W.