Enhancing solar evaporator efficiency and reducing salt fouling by separating evaporation surface and water pump

IF 7.9 3区 材料科学 Q1 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY
Hoyeon Kim, GyuHeon Im, Jonghwi Lee
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引用次数: 0

Abstract

Solar-driven evaporation has emerged as a promising approach for sustainable seawater purification. However, most reported methods often suffer from problems such as low efficiency, scaling, and fouling. To address these long-term limitations, this study presents a novel solar evaporator design that separates the evaporation surface from the water pumping column. This design allows the water pumping column to maintain the same salinity and temperature as the bulk seawater, minimizing scaling, fouling and heat loss. The system employs a temperature-responsive hydrogel with aligned pores to facilitate non-powered water transport driven by diurnal temperature fluctuations. Additionally, the design uses a floating graphene composite paper (GCP) evaporation surface that moves with the water level inside the evaporation chamber, automatically adjusting the angle between the evaporation surface and the sun to optimize energy absorption. Experimental results demonstrate that this configuration effectively prevents salt accumulation within the water channels, minimizes heat loss, and achieves enhanced evaporation rates, thereby offering a viable solution for efficient and sustainable seawater purification.

Abstract Image

采用蒸发面与水泵分离的方法,提高太阳能蒸发器效率,减少盐垢
太阳能驱动的蒸发已经成为一种很有前途的可持续海水净化方法。然而,大多数报道的方法往往存在效率低、结垢和污垢等问题。为了解决这些长期的限制,本研究提出了一种新的太阳能蒸发器设计,将蒸发表面与水泵柱分开。这种设计使水泵柱保持与整体海水相同的盐度和温度,最大限度地减少结垢、结垢和热损失。该系统采用了一种具有排列孔隙的温度响应水凝胶,以促进昼夜温度波动驱动的无动力水输送。此外,该设计还采用了浮动的石墨烯复合纸(GCP)蒸发面,该蒸发面在蒸发室内随水位移动,自动调节蒸发面与太阳之间的角度,以优化能量吸收。实验结果表明,这种配置有效地防止了水道内的盐积累,最大限度地减少了热量损失,并提高了蒸发速率,从而为高效和可持续的海水净化提供了可行的解决方案。
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来源期刊
CiteScore
5.80
自引率
6.40%
发文量
174
审稿时长
32 days
期刊介绍: Materials Today Sustainability is a multi-disciplinary journal covering all aspects of sustainability through materials science. With a rapidly increasing population with growing demands, materials science has emerged as a critical discipline toward protecting of the environment and ensuring the long term survival of future generations.
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