2D+3D供水的木基光热蒸发器及其性能评价  

Property assessment of wood-based photothermal evaporator with 2D+3D water supplying

作　　者：孙乐汀 刘会娥[1] 陈爽[1] 于洁[1] 李婷[1] SUN Leting;LIU Hui'e;CHEN Shuang;YU Jie;LI Ting(College of Chemistry and Chemical Engineering,China University of Petroleum,Qingdao 266580,China)

机构地区：[1]中国石油大学(华东)化学化工学院,青岛266580

出　　处：《复合材料学报》2025年第2期854-862,共9页Acta Materiae Compositae Sinica

基　　金：国家自然科学基金(22078366)。

摘　　要：近年来,随着经济和社会快速发展,全球淡水资源需求量不断增加,导致全球淡水资源愈加紧缺。海水淡化是目前解决淡水短缺问题最好的方式之一。为实现海水的快速蒸发,本文制备了高度为20 mm、碳化层厚度为3 mm的脱木素轻木木基光热材料(CDW),通过SEM、FTIR、Raman光谱、UV-Vis-NIR吸收光谱等表征实验证实所制备的材料具有丰富的孔道和良好的吸光性能,有利于水的光热蒸发。构建2D+3D供水的小型光热蒸发器,采用吸水纸向光热材料供水,对所制备的CDW材料进行了光热水蒸发性能评价,所获得的平均蒸发速率为1.5310 kg/(m^(2)·h),较碳化原木有明显提升。通过与无供水情况下的光热实验对比,证实吸水纸能够稳定给材料提供水源;通过与材料直接接触水面的3D供水情况作对比,证实了2D+3D供水结构的优越性。In recent years,with the rapid development of the economy and society,the global demand for freshwater resources has been continuously increasing,leading to an increasing shortage of freshwater resources worldwide.Desalination of seawater is one of the best ways to solve the problem of freshwater shortage recently.In order to achieve rapid evaporation of seawater,a photothermal material based on a delignified balsa wood(CDW)was prepared,which had a height of 20 mm and a carbonization layer with thickness of 3 mm.Characterization experiments such as SEM,FTIR,Raman,and UV-Vis-NIR absorption spectrum have confirmed that the prepared material has abundant pores and high solar absorbance,which is beneficial for photothermal evaporation.A small photothermal evaporator with 2D+3D water supplying paths,transferring water to the photothermal material using absorbent paper,was used to evaluate the evaporation performance of CDW.The average evaporation rate of the prepared CDW material is 1.5310 kg/(m^(2)·h).The evaporation rate is higher than the directly carbonized balsa wood.The comparison between the above results and that without water supply confirmed that the absorbent paper can steadily supply water to the material.The advantages of the 2D+3D water supplying structure are also observed when compared with the 3D water supplying structure.

关 键 词：轻木 蒸发 太阳能 碳化木材 海水淡化 复合材料 

分 类 号：X703[环境科学与工程—环境工程] TB332[一般工业技术—材料科学与工程]