摘要
固-液相变材料在储能领域中应用广泛,但存在液体泄漏、导热系数低的缺点,极大地限制了其在太阳能储能领域的应用。本研究以油胺作为分散稳定剂,将铜纳米颗粒(Cu)均匀分散在熔融液态石蜡(PW)中。应用真空浸渍法使Cu/PW与三聚氰胺泡沫(MF)相结合,获得了具有光热转换性能和太阳能存储能力的新型柔性MF/Cu/PW相变复合材料(PCMs)。所制备的PCMs不仅具备良好的形状稳定性和较高的潜热(约152.9 J·g^(-1)),而且表现出独特的光热转换性能,可应用在浙贝母生产的温室大棚方面,起到智能温度调控的作用。MF/Cu/PW PCMs制作工艺简单,且具有绿色环保、能源高效利用等优点,在浙贝母生产的太阳能利用和温度调控系统中具有广阔的应用前景。
Solid-liquid phase change materials are widely used in energy storage,but suffer from the disadvantages of liquid leakage and low thermal conductivity,which greatly limit their application in solar energy storage.In this study,copper nanoparticles(Cu)were uniformly dispersed in molten liquid paraffin wax(PW)using oleylamine as a dispersing stabilizer.The vacuum impregnation method was applied to combine Cu/PW with melamine foam(MF)to obtain new flexible MF/Cu/PW phase change composites(PCMs)with photo-thermal conversion performance and solar energy storage capability.The PCMs not only have good shape stability and high latent heat(approximately 152.9 J·g^(-1)),but also exhibit unique photo-thermal conversion properties,which can be applied to greenhouses in the production of Fritillaria thunbergii for intelligent temperature control.MF/Cu/PW PCMs has the advantages of simple manufacturing process,environmental protection and energy efficient utilization,and has a broad application prospect in the solar energy utilization and temperature control system produced by Fritillary bulb.
作者
王心怡
杨露怡
周麟辉
宋源普
倪忠进
Wang Xinyi;Yang Luyi;Zhou Linhui;Song Yuanpu;Ni Zhongjin(College of Optical,Mechanical and Electrical Engineering,Zhejiang A&F University,Zhejiang Hangzhou 311300)
基金
浙江省公益技术应用研究项目“丘陵山区浙贝母生产全程机械化关键技术研究及应用”(LGN20C130002)。
关键词
相变储能材料
石蜡
铜纳米颗粒
光热转换
农业温室大棚
浙贝母
phase change energy storage materials
paraffin wax
copper nanoparticles
photothermal conversion
agricultural greenhouses
Fritillaria thunbergii
