太阳能海水晒盐强化技术的研究

Study on the Strengthening Technology of Salt Solarization

基于太阳能高效界面蒸发技术,利用活性炭过滤棉、海绵、百洁布和烧结不锈钢形成不同的双层组合,进行优化,以促进太阳能海水晒盐过程。实验结果表明:在光强1 000 W·m^(-2)下,活性炭过滤棉与海绵的双层组合能更有效促进水分的蒸发,光热转化层距水面高度在4 mm左右、仅铺设1层时(厚度为3 mm)会有更好的蒸发效果;在盐聚集的存在下10 h内仍然有高效的水蒸发速率;进行了10个循环试验,该双层结构仍然能够保证较好的蒸发效果。选出的2种成本低廉的材料能够促进太阳能光热产生水蒸汽的转换,水分蒸发速率为1.2 kg·m^(-2)·h^(-1),热效率为78%,有着较好的蒸发效果,为海水晒盐提供了一种新的思路。

Based on the efficient solar steam generation technology,the activated carbon filter cotton,sponge,scouring cloth and sintered stainless steel were used to form different two-layer combinations and optimized to promote the generation of steam. The experimental results show that under the light intensity of 1 000 W·m^(-2),the double-layer combination of activated carbon filter cotton and sponge can promote the evaporation of water more efficiently. The height of the light-to-heat conversion layer from the water surface is about 4 mm,when only one layer is laid( thickness is 3 mm),there is a better evaporation effect;in the presence of salt accumulation,there is still an efficient water evaporation rate within 10 hours;after 10 cycles of experiments,the double-layer structure still ensures good evaporation effect. The two low-cost materials selected in this paper can promote the conversion of water vapor produced by solar light and heat. The water evaporation rate is 1. 2 kg·m^(-2)·h^(-1),and the thermal efficiency is 78%,which works well. The work of this article provides a new way for efficient salt solarization.