新型折流板式双风道空气集热器数值模拟  

Numerical simulation on new type of baffled double air duct air collector

作　　者：王亮 满意[1,2] Wang Liang;Man Yi(School of Thermal Engineering,Shandong Jianzhu University,Jinan 250101,China;Key Laboratory of Renewable Energy- Utilization Technologies in Buildings of Education Ministry-,Jinan 250101,China)

机构地区：[1]山东建筑大学热能工程学院,山东济南250101 [2]可再生能源建筑利用技术教育部重点实验室,山东济南250101

出　　处：《山东建筑大学学报》2018年第4期45-50,共6页Journal of Shandong Jianzhu University

基　　金：山东省自然科学基金项目(BS2015NJ016);山东省绿色建筑协同创新中心团队建设基金项目(LSXT201502)

摘　　要：对太阳能空气集热器进行优化设计可以有效提高集热器的集热效率,降低能源浪费。文章设计了1种新型折流板式双风道空气集热器,其上、下层各有2个进、出口,上层流道均采用新风,下层流道均采用回风,建立了集热器数值传热模型,采用Fluent软件对4种工况进行数值模拟计算。结果表明:随着进口流量的增大,集热器出口温度逐渐下降;集热效率逐渐上升,工况4的集热效率最高,为59.73%,而工况1的集热效率最低,为39.14%;新型折流板集热器比传统的平板集热器的集热效率高近20%,可以通过增加折流板长度或者穿孔型折流板改善空气流道层。Optimizing the design of solar air collector can effectively improve the collector efficiency and t^duce energy waste. This paper designs a new type of baffle double air duct air collector, which is divided into 2 inlet and outlet of the upper and lower layers independently. The upper flow passage adopts the new wind and the lower flow passage adopts the return air. The numerical model heat transfer is set up for the collector. According to the difference of the inlet flow rate, it is divided into 4 working conditions and the numerical simulation calculation is carried out by Fluent software. The results show that with the increase of the inlet flow rate, the outlet temperature of the collector gradually decreases, the heat efficiency increases gradually. The maximum heat efficiency is 4, 59.73% and the lowest heat efficiency is reached. The rate is 1, reaching 39. 14%. The heat collecting efficiency the new type baffle plate collector is nearly 20% higher than that of the traditional plate collector. The air passage layer can be improved by increasing the length of the baffle plate or the perforated baffle plate.

关 键 词：太阳能空气集热器 双风道 出口温度 集热效率 

分 类 号：TU832[建筑科学—供热、供燃气、通风及空调工程]