轻质双层纺织基太阳能空气集热器的集热性能试验研究  

Experimental study on the thermal performance of light textile-based solar air collectors with double layer composite

作　　者：朱婧婧 程小梅 李瑶 郭建生[1] Zhu Jingjing;Cheng Xiaomei;Li Yao;Guo Jiansheng(Textile College,Donghua University,Shanghai 201600,China;Yanfeng Adient Auto Parts Co.,Ltd.,Chongqing 400000,China)

机构地区：[1]东华大学纺织学院,上海201600 [2]重庆延锋安道拓汽车部件有限责任公司,重庆400000

出　　处：《可再生能源》2022年第2期178-183,共6页Renewable Energy Resources

基　　金：中央高校基本科研业务费专项资金资助(CUSF-DH-D-2018040)。

摘　　要：纺织基太阳能空气集热器作为轻质柔软的太阳能集热器,在中低温集热领域具有潜在的应用前景。文章设计了新型双层纺织基太阳能空气集热器,并进行户外试验,探究单双层结构、间隔丝密度、空气质量流量对集热器性能的影响。研究结果表明:在空气质量流量为0.023 kg/(m^(2)·s)时,双层纺织基太阳能空气集热器热转移因子和总热损系数分别为0.97和5.87 W/(m^(2)·℃),集热性能优于同条件下单层结构集热器;进出口空气温差和集热效率随间隔丝密度的增加而增加;集热效率随空气质量流量的增加而增加,当空气质量流量为0.037 kg/(m^(2)·s)时,间隔丝密度为36根/cm^(2)的集热器集热效率为0.64。The light and flexible textile-based solar air collector has been proposed and investigated in recent years due to its potential applications in heat supply at low to moderate temperatures.In this work,a new type of double layer textile-based solar air collector was designed and developed.The effects of collector structure,spacer filament density and air mass flow rate on the thermal performance of the flexible textile-based solar air collector were studied via outdoor experiments.This study quantified that the heat transfer factor FR and total heat loss coefficient ULof the double layer textile-based solar air collector were 0.97 and 5.87 W/(m^(2)·K)respectively,at a mass flow rate of 0.023 kg/(m^(2)·s).The thermal efficiency of double layer textilebased solar air collectors was demonstrated to be better than that of single layer collectors.Besides,the temperature difference and thermal efficiency of as-fabricated collectors increased with increasing spacer filament density.Moreover,the thermal efficiency of collectors increased with increasing air mass flow rate and the maximum thermal efficiency of 0.64 was achieved at a mass flow rate of 0.037 kg/(m^(2)·s)for the collector with a spacer filament density of 36 stitch/cm^(2).

关 键 词：空气集热器 双层模型 三维间隔织物 热损系数 集热效率 

分 类 号：TK513[动力工程及工程热物理—热能工程]