太阳能海水晒盐强化技术的研究

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摘要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。

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	黄群武
	田作旭
	王一平

关键词：太阳能；高效界面蒸发；低成本材料；晒盐

Abstract： 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.

Keywords： solar energy； efficient solar steam generation； low-cost materials； salt solarization

Received 2020-06-29;

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Corresponding Authors: 黄群武,E-mail:huangqw@tju.edu.cn。 Email: huangqw@tju.edu.cn

About author: 黄群武(1973-),男,副教授,现从事强化传热和新能源利用方面的研究。

引用本文:

黄群武, 田作旭, 王一平.太阳能海水晒盐强化技术的研究[J]. 化学工业与工程, 2021,38(3): 49-56

Huang Qunwu, Tian Zuoxu, Wang Yiping.Study on the Strengthening Technology of Salt Solarization[J]. Chemcial Industry and Engineering, 2021,38(3): 49-56

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