基于粘胶纤维非织造材料的太阳能水电联产装置设计及其性能  

Design and properties of solar water-electricity synergistic generator based on viscose nonwoven fabric

作　　者：鲁颖科 金炳奇 徐涛 高一蕾 邓炳耀 李昊轩 LU Yingke;JING Bingqi;XU Tao;GAO Yilei;DENG Bingyao;LI Haoxuan(College of Textile Science and Engineering,Jiangnan University,Wuxi,Jiangsu 214122,China;Key Laboratory of Intelligent Textile and Flexible Interconnection of Zhejiang Province,Hangzho u,Zhejiang 310018,China)

机构地区：[1]江南大学纺织科学与工程学院,江苏无锡214122 [2]浙江省智能织物与柔性互联重点实验室,浙江杭州310018

出　　处：《纺织学报》2024年第7期78-85,共8页Journal of Textile Research

基　　金：国家自然科学基金项目(52203226);浙江省智能纺织与柔性互联重点实验室开放课题项目(YB13)。

摘　　要：针对目前光驱动界面式水蒸发研究忽略低成本规模化生产和淡水产率低的问题,以粘胶纤维为原料,采用针刺非织造技术加工得到粘胶纤维非织造材料,选用光伏电池与粘胶纤维非织造材料制备水电联产装置,巧妙借助光伏电池工作时产生的废热实现界面蒸发,同时解决光伏电池在工作中产生高温导致发电效率降低的问题。研究了不同面密度的粘胶纤维非织造材料对装置蒸发速率的影响,以及该装置的水电联产性能。结果表明:粘胶纤维非织造材料运输水进行蒸发可有效降低光伏电池的温度,在1 kW/m 2的光照强度下,使用面密度为160 g/m 2的粘胶纤维非织造材料搭建的装置蒸发速率最佳,可达1.36 kg/(m 2·h),光伏电池的光电转换效率相较于界面蒸发降温前提高0.7%;经户外实验,该水电联产装置1 d可稳定收集2.23 kg/m 2的水和37.3 kW·h/m 2的电,且收集的淡水达到世界卫生组织饮用水标准,初步验证了利用传统非织造材料和光伏发电结合实现水电联产和规模化应用的潜在可能。Objective Interfacial solar steam generation(ISSG)has emerged as a promising eco-friendly and low-carbon emission technology to address the global water scarcity.However,most current studies have focused too much on evaporation materials,ignoring the real bottlenecks are in the low-cost,scalable production and low fresh water yield in seawater desalination.In order to solve the above problems,this paper proposes a novel strategy to construct a water-electricity synergistic generator(WESG)by combining interfacial evaporation technology with photovoltaic generation.Method The WESG containing a solar cell,thermoelectric generator,viscose fiber based nonwoven fabric and a copper condenser from top to bottom.The device skillfully uses the waste heat generated during the work of photovoltaic cells to facilitate interface evaporation,and solves the problem of low power generation efficiency caused by high temperature generated during the operation of the photovoltaic cells.The structure and wicking effect of the viscose fiber based nonwoven fabric,evaporation and electricity performance of the WESG was characterized.Results The viscose nonwoven fabric is twisted,staggered,and interconnected to form a porous structure,resulting in good air permeability.The water droplets on the surface of viscose nonwovens fabric completely is diffused within 0.2 s,indicating that the water quickly reaches the gas-liquid interface and continuously supplies water to the evaporation interface.Assisted with evaporation process,the temperature of the photovoltaic cell is decreased from 62℃to 48℃under the simulated irradiation of 1 kW/m 2,and the evaporation rate reaches 1.36 kg/(m 2·h).According to the voltammetry characteristic curve of the photovoltaic cell,the photovoltaic conversion efficiency is increased from 8.8%to 9.6%after cooling.The results show that the combination of photovoltaic power generation and interfacial water evaporation technology can effectively reduce the working temperature of photovoltaic cells and improve the

关 键 词：界面蒸发 光伏发电 非织造材料 粘胶纤维 海水淡化 水电联产装置 

分 类 号：TK519[动力工程及工程热物理—热能工程]