蛇形太阳能空气集热器流道布置的优化分析
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摘要
加装扰流板的蛇形太阳能空气集热器是平板式太阳能空气集热器的常见改进形式。文章对上风道、双风道、下风道蛇形太阳能空气集热器的集热效率和热量损失进行模拟分析。分析结果表明:3种太阳能空气集热器的集热效率随着测试时间的变化均呈现出先升高后降低的变化趋势;上风道、双风道、下风道蛇形太阳能空气集热器的平均集热效率分别为57.53%,64.69%,65.24%,热量损失分别为429.26,323.97,317.01 W。
Snake shaped solar air collectors equipped with spoilers were the common improvement for flat-panel solar air collectors. Through the simulation analysis of the three snake shaped solar collectors of the upper plenum, double plenum and lower leeway, it is obtained that the collection efficiency of the three collectors increases first and then decreases with time. The average efficiency of the snake shaped solar air collectors with three structures of the upper plenum, double plenumand lower leeway was 57.53%, 64.69, 65.24%, respectively. The heat loss was 429.26, 323.97,317.01 W.
Snake shaped solar air collectors equipped with spoilers were the common improvement for flat-panel solar air collectors. Through the simulation analysis of the three snake shaped solar collectors of the upper plenum, double plenum and lower leeway, it is obtained that the collection efficiency of the three collectors increases first and then decreases with time. The average efficiency of the snake shaped solar air collectors with three structures of the upper plenum, double plenumand lower leeway was 57.53%, 64.69, 65.24%, respectively. The heat loss was 429.26, 323.97,317.01 W.
引文
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[3]Sreekumar A.Techno-economic analysis of a roofintegrated solar air heating system for drying fruit and vegetables[J].Energy Conversion and Management,2010,51:2230-2238.
[4]Zhao D L,Li Y,Dai Y J,et al.Optimal study of a solar air heating system with pebble bed energy storage[J].Energy Conversion and Management,2011,52:2392-2400.
[5]Moummi N,Youcef-ali S,Moummi A,et al.Energy analysis of a solar air collector with rows of fins[J].Applied Thermal Engineering,2006,26(10):1043-1053.
[6]钱珊珠,赵宇航.扰流板数量对集热器集热效率的模拟研究[J].中国农机化学报,2016,37(9):178-203.
[7]李晓琳,庄卫东.蛇形双流道平板式太阳能空气集热器的设计与试验[J].黑龙江八一农垦大学学报,2017,29(4):94-98.
[8]李晓琳.蛇形双流道平板式太阳能空气集热器设计与研究[D].鸡西:黑龙江八一农垦大学,2017.
[9]马龙.开孔折流板型太阳能空气集热器流动传热特性研究[D].秦皇岛:燕山大学,2016.
[10]胡建军,马龙,刘凯彤.开孔型折流板太阳能空气集热器参数优化[J].农业工程学报,2016,32(14):227-231.
[11]刘一福.扰流板型太阳能平板空气集热器数值模拟分析[D].衡阳:南华大学,2012.
[12]M F El-khawajah,L B Y Aldabbagh,F Egelioglu.The effect of using transverse fins on a double pass flow solar air heater using wire mesh as an absorber[J].Case Studies in Thermal Engineering,2011,85:1479-1487.
[13]王福军.计算流体动力学分析-CFD软件原理与应用[M].北京:清华大学出版社,2004.
[14]王新彬.寒冷地区村镇学校建筑太阳能采暖技术应用研究[D].济南:山东建筑大学,2010.