平板型双流道太阳能空气集热器扰流板结构优化  

Baffles Optimization of a Flat Plat Solar Air Collector with Double Channels

作　　者：张东[1,2] 张建军 张跃智 李金平 王林军[2] ZHANG Dong;ZHANG Jianjun;ZHANG Yuezhi;LI Jinping;WANG Linjun(School of Energy and Power Engineering,Lanzhou University of Technology,Lanzhou 730050,China;Key Laboratory of Complementary Energy System of Biomass and Solar Energy,Lanzhou 730050,China)

机构地区：[1]兰州理工大学能源与动力工程学院,兰州730050 [2]甘肃省生物质能与太阳能互补供能系统重点实验室,兰州730050

出　　处：《上海交通大学学报》2019年第11期1302-1307,共6页Journal of Shanghai Jiaotong University

基　　金：国家自然科学基金项目(51166008,51806093);甘肃省自然科学基金项目(18JR3RA141);甘肃省建设科技攻关项目(JK2014-48,JK2017-9);兰州理工大学红柳优秀青年教师计划

摘　　要：构建了平板型双流道太阳能空气集热器,提出了安装开孔型扰流板的结构优化方案,将该方案与安装平面无孔式扰流板及无扰流板集热器进行了对比分析.结果表明,安装平面无孔式扰流板后,集热器背部区域会形成局部空气流动死区,而安装开孔型扰流板可以破坏和抑制流动死区的形成,从而提高集热器的集热效率和热性能.相比未安装扰流板的原始模型,安装扰流板后集热效率由53.4%增加到67.9%.A flat plate solar air collector with double channels is established. The optimization schemes with perforated baffles are proposed. The thermal performance of optimized collector is anlyzed and compared with the commom plane baffle and non-baffle types. The results show that flow dead zones in back of baffles appear generally. The solar air collector with perforated baffles has a higher collector efficiency and thermal perfromance because of the forceful destabilization of flow dead zone. Compared with the model without baffles, the collecor efficiency increases from 53.4% to 67.9%.

关 键 词：太阳能空气集热器 开孔型扰流板 优化 集热效率 

分 类 号：TK512[动力工程及工程热物理—热能工程]