【摘要】 为研究在单通道结构中带导流板的穿孔吸热板对太阳能空气集热器传热性能的影响规律，文章设计了一种在吸热板开孔下方加装导流板的强化传热结构，数值分析了导流板的高度h、导流板开口比例g、横向排列间距与水力直径比X/D、纵向排列间距与水力直径比Y/D、穿孔横纵比e₂/e₁对集热器传热和流动特性的影响。通过单因素分析，得到综合传热系数最优的结构参数（h=1.0 mm,g=0.50,X/D=3.25,Y/D=2.60,e₂/e₁=0.32）。在所研究的流量范围内，最优结构的吸热板表面平均努塞尔数比无导流板结构提高了37.6%，摩擦系数提高了31.6%，平均综合传热系数提高了20.3%；最大集热效率和有效效率分别为80.1%和75.6%，比文献中穿孔吸热板结构的太阳能空气集热器分别提高了6.8%和51.3%。该研究表明，在穿孔吸热板上安装导流板可以有效提高太阳能空气集热器的综合性能。更多还原

【Abstract】 In order to study the influence of perforated heat absorber plate and guide plate on heat transfer performance of solar air collector in single channel structure,a heat transfer enhancement structure with guide plate under the opening of heat absorber plate is designed in this paper. The effects of the height of the guide plate under the heat absorber plate,the opening ratio of the guide plate,the transverse arrangement spacing,the longitudinal arrangement spacing and the transverse and longitudinal ratio of the perforation on the heat transfer and flow characteristics of the collector are numerically analyzed. The optimal structural parameters of the comprehensive heat transfer coefficient were obtained by single factor analysis（h=1.0 mm,g=0.50,X/D =3.25,Y/D =2.60,e₂/e₁=0.32）. In the flow range studied,the average Nusselt number on the surface of the heat absorbing plate with the optimal structure is 37.6% higher than that without the deflector structure,the friction coefficient is increased by 31.6%,and the average comprehensive heat transfer coefficient is increased by 20.3%. The maximum heat collection efficiency and effective efficiency are 80.1% and 75.6%,respectively,which are 6.8% and 51.3% higher than those of the solar air collector with perforated plate structure in the literature. Therefore,the installation of the guide plate on the perforated heat absorbing plate can effectively improve the comprehensive performance of the solar air collector.更多还原