论文部分内容阅读
设计制作了以薄壁玻璃管为蜂窝单元的透明蜂窝盖板,应用于平板型太阳能空气集热器.针对6种不同尺寸的蜂窝结构太阳能集热器进行试验研究,重点研究在小高宽比(L/D<3)下,蜂窝的孔径、高宽比等因素对阳光透过率和集热效率的影响.试验结果显示:当蜂窝直径相同高宽比不同时,集热器出口温度相差较大,高宽比小的温度高,最大温差约为10℃.当蜂窝直径不同,高宽比相同时,集热器出口温度相差不大.有蜂窝与无蜂窝,最大温差约为12℃.通过对玻璃管蜂窝单元的分析,推导出蜂窝结构透过率的理论关系式,发现光线在蜂窝内的透过率只取决于蜂窝的高宽比L/D以及材料的透光性质,而与具体的尺寸无关从而从理论上说明了集热器效率与蜂窝高宽比的关系.
A transparent honeycomb panel with thin-walled glass tube as a honeycomb unit is designed and manufactured and applied to a flat panel solar air collector. Six kinds of honeycomb solar collectors of different sizes are studied and studied, L / D <3), the aperture and aspect ratio of the honeycomb were studied.The results show that when the honeycomb diameter is the same and the aspect ratio is different, the outlet temperature of the collector varies greatly , High temperature and low aspect ratio, the maximum temperature difference of about 10 ℃ .When the honeycomb diameter is different, the same aspect ratio, the outlet temperature of the collector or less .Cellular and without honeycomb, the maximum temperature difference is about 12 ℃ .Through The analysis of the glass tube honeycomb unit deduces the theoretical relationship of the honeycomb structure transmittance and finds that the transmittance of light in the honeycomb depends only on the aspect ratio L / D of the honeycomb and the light-transmitting property of the material, Has nothing to do with the size of a theoretical illustration of the collector efficiency and the relationship between the honeycomb aspect ratio.