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基于已产业化应用的平板型太阳集热器,在长度方向上加工形成空气流道,进出口位置以对角线形式布置,提出一种平板型双流道太阳能空气集热器,搭建空气集热器实验平台,对改型后的集热器进行空气集热实验与分析。研究结果表明:在太阳辐射强度及环境温度平均值分别为535.2 W/m~2和22.2℃、空气质量流量为0.024 kg/s时,基于采光面积的集热效率平均值与最大值分别为51.29%和53.93%,空气最大温升与最大温差分别为60.4℃和40.6℃,热迁移因子为0.55;以对角线形式布置的空气进、出口和空气的双流道式流动,可增加空气流道长度,强化与吸热板的对流换热。这种空气集热器具有改型方便、成本低廉、易于产业化生产等优点,可广泛应用于采暖、干燥、通风等方面。
Based on the flat-plate solar collectors that have been applied in industry, an air flow passage is formed in the length direction and the entrance and exit of the solar collectors are arranged diagonally. A flat dual-channel solar air collector is proposed to construct an air heat collector Experimental platform for the collector after retrofit on the air collector experiments and analysis. The results show that the average value and the maximum value of heat collection efficiency based on the lighting area are 51.29% and 51.29% when the average solar radiation intensity and ambient temperature are 535.2 W / m 2 and 22.2 ℃ respectively and the air mass flow rate is 0.024 kg / s. And 53.93% respectively. The maximum air temperature and maximum air temperature difference were 60.4 ℃ and 40.6 ℃, respectively, and the heat transfer factor was 0.55. The diagonal flow of air inlet and outlet and air double channel flow increased the air channel length , Strengthen the convection heat exchange with the heat plate. This air collector has the advantages of convenient retrofitting, low cost, easy industrialization production, etc., and can be widely applied to heating, drying and ventilation.