甘蔗生物质炭在界面太阳能海水淡化中的应用
Application of Sugarcane Biomass Carbon in Interface Solar Seawater Desalination
何乃如 1田子谕 1王伟 2桓茜 3靳浩斌 3白帅丽4
作者信息
- 1. 陕西科技大学机电工程学院,西安 710021
- 2. 陕西工业职业技术学院航空工程学院,咸阳 712000;西安工业大学光电工程学院,西安 710021
- 3. 陕西工业职业技术学院航空工程学院,咸阳 712000
- 4. 陕西工业职业技术学院航空工程学院,咸阳 712000;武汉工程大学机电工程学院,武汉 430205
- 折叠
摘要
太阳能驱动的界面水蒸发作为环保、高效、可持续的海水淡化技术,在近年来受到广泛关注.快速的水运输、高效的光热转换是实现持续、稳定蒸发的关键.多级孔道的生物质衍生蒸发器在太阳能水蒸发应用中展示出高效、环保、可持续的应用潜力.以废弃的甘蔗节为原料,利用冷冻干燥和高温碳化工艺制备了具有天然多级孔道结构的生物质基蒸发器,并研究了材料的光吸收、水运输和蒸发性能以及不同风速下对流空气对蒸发器的蒸发性能和热损失的改善作用.结果表明:具有发达的多级孔道结构的生物质基蒸发器展示出了高达92.8％的太阳光吸收率.在一倍太阳光强下展示出1.55 kg/(m2·h)的蒸发速率和77.6％的光热转换效率.此外,在风速2 m/s的条件下,蒸发器的蒸发速率展示出了高达2.27 kg/(m2·h)的蒸发速率和91.6％的光热转换效率,显示了对流效应对淡水产出速率的增强和对热损失的抑制作用.
Abstract
Solar-driven interfacial water evaporation,as an environmentally friendly,efficient,and sustainable de-salination technology,has received extensive attention in recent years.Fast water transport and efficient photother-mal conversion performance are the key points to achieve continuous and steady evaporation.Biomass-derived evap-orators with multi-level pores demonstrate the potential for efficient,eco-friendly,and sustainable applications in solar water evaporation.A biomass-based evaporator with a natural porous structure was designed from discarded sugarcane knots using freeze-drying and high-temperature carbonization methods,and its light absorption,water transport,and evaporation capabilities were studied.It is reported that convective air with different wind speeds has an improving effect on the evaporation performance and heat loss of the evaporator.The results showed that the bio-mass-based evaporator with a well-developed microchannel structure had a solar absorption of 92.8％,an evapora-tion rate of 1.55 kg/(m2·h)and a light-to-heat conversion efficiency of 77.6％under 1 sun.Furthermore,at a wind speed of 2 m/s,the evaporation rate and the photothermal conversion efficiency of the evaporator reached 2.27 kg/(m2·h)and 91.6％,respectively,showing the enhancement of the freshwater yield rate by convective effects and the suppression of heat loss.
关键词
太阳能驱动水蒸发/空气对流/多级孔道结构/生物质材料Key words
solar-driven water evaporation/air flow/multi-level channel structure/biomass materials引用本文复制引用
基金项目
中国博士后科学基金项目(2021M692506)
陕西省创新能力支撑计划项目(2023KJXX-079)
陕西省教育厅科研计划项目(23JK0308)
出版年
2024
NETL
NSTL
维普
万方数据