A vacuum and building integrated free coated flat plate solar collector, composed of two layers of the main glass panel and four surrounding a closed cavity, wherein the main glass panel is a double-layer vacuum glass plate between two layers of glass panel is provided with a plurality of main vertical partitions, the closed cavity cavity separated into several fluid channel by the clapboard hermetic chamber side connected with the fluid channel through the inlet and outlet in the closed cavity filled with Cu/ glycol nanofluids black liquor. The fluid passages in the closed chamber end to end, forming a serial flow between the inlet and the outlet. Cu/ ethylene glycol nano fluid black liquid is made of Arabia gum as dispersing agent, and glycol aqueous solution as dispersing medium. Nano copper powder is added into it and stirred by magnetic stirring and dispersed by ultrasonic wave. The utility model has the advantages of high thermal efficiency, free coating, convenient assembly in a large area, and can be used as a single solar collector, and can be directly used as a component for buildings to realize integration with buildings.
【技术实现步骤摘要】
本专利技术涉及一种集热器,特别是一种与建筑一体化的真空免镀膜平板太阳能集 热器。
技术介绍
在太阳能热利用
,目前常用的集热器有(1)真空玻璃管集热器,由于受安装条件及真空管本身寿命、强度等的限制,很难与建 筑实现一体化,同时,由于真空管之间存在较大管距,真空管集热器有效集热面积仅为集热 器轮廓面积的1/2左右,因此集热器的效率较低。(2)平板集热器,虽然平板集热器容易实现与建筑一体化,但其存在热效率低、保 温性能差,涂层易氧化、铜管易腐蚀等缺陷,为解决平板集热器的防冻问题,实际使用中多 采用使用防冻液作为循环工质采用二次换热的方式,由于防冻液的传热效果较差,无论是 集热还是二次换热,都要求有一个较大的温差,这无疑也增大集热器的热损失。(3)采用在真空玻璃板内镀膜方式,这种方式的缺陷是玻璃熔接温度高,破坏选择 性吸收膜,致使集热效果大大降低。以上各类集热器中,吸热面与工作介质之间的热量传递都是一个多界面的间接热 量传递过程,吸热面上的镀膜或吸热涂层将太阳辐射能转换为热能,然后通过固体壁面的 热传导将热量传递给工作介质,由于固液边界层存在较大热阻,吸热面与工 ...
【技术保护点】
1.一种与建筑一体化的真空免镀膜平板太阳能集热器,其特征在于:由两层主玻璃面板及四周边条组成密闭腔体,所述的主玻璃面板皆为双层真空玻璃板,在两层主玻璃面板之间竖向设有若干隔板,密闭腔体内的空腔由隔板隔成若干流体通道,在密闭腔体的侧边设有与上述流体通道相连通的进口和出口,在密闭腔体内填充有直接吸收太阳辐射能的功能热流体纳米黑液。
【技术特征摘要】
【专利技术属性】
技术研发人员:邵理堂,刘学东,陈淑江,孟春站,
申请(专利权)人:淮海工学院,江苏三金太阳能有限公司,
类型:发明
国别省市:32
还没有人留言评论。发表了对其他浏览者有用的留言会获得科技券。