太阳能空气集热器中蜂窝结构的试验对比研究  

Experimental Study on Solar Air Collector with Transparent Honeycomb

作　　者：李平[1] 张立平[2] 戴巧利[1] 

机构地区：[1]江苏大学能源与动力工程学院,江苏镇江212013 [2]皇明太阳能集团有限公司技术支持部,山东德州253000

出　　处：《节能技术》2008年第1期75-78,96,共5页Energy Conservation Technology

摘　　要：介绍了一种用于建筑采暖的平板式集热器,针对平板式集热器中透明蜂窝结构抑制对流减少热损失的效应进行试验研究。通过对不同蜂窝盖板的集热器的空晒和抽气试验,发现小尺寸的蜂窝虽然能够抑制对流引起的热损失,但由于遮光和肋面热传导的增加又抵消了因抑制对流而带来的好处。在试验采用的几种蜂窝尺寸中,发现50 mm×50 mm×25 mm的蜂窝为较佳方案;对于相同高度(25 mm)、相同矩形截面(50 mm×25 mm)的蜂窝,在出口空气温度较低时,矩形截面水平放置(50 mm×25 mm)和垂直放置(25 mm×50 mm)给出相近的空气温度;但在出口空气温度较高时,则水平放置时的空气温度比垂直放置时高。In the paper, contrast experiments are conducted, which used transparent honeycomb to suppress convection to reduce the heat loss in the flat solar collector used in the buildings＇ heating. According to the closed and pump air experiments, less honeycomb structure can suppress the heat loss caused by convection, but honeycomb＇ s rib impedes ray and increases the conduct to the up cover which increases the heat loss. In kinds of experiments, 50 ×50 × 25mm＇s honeycomb structure is better. To the same depth and section honeycomb（50 × 25mm）, near temperature is obtained to the level and vertical placed when the outlet＇ s air temperature is lower, but the level placed is better than the vertical when the outlet＇s air temperature is higher.

关 键 词：太阳能空气集热器 热损失 蜂窝 建筑采暖 

分 类 号：TK515[动力工程及工程热物理—热能工程]