The thermal performance of an evacuated tube solar air collector with inserted baffles (ETSACIB) was investigated experimentally and analytically investigated under the indoor solar thermal simulator. The effects of the operating parameters such as flow rate, inlet air temperature, baffle length and solar insolation on the thermal behaviour of ETSACIB system were analyzed. Experiments were performed different flow rates of air (100–1000 kg/h). The maximum temperature rise of 42.8 °C was achieved with the lowest thermal efficiency of 35.31% at the flow rate of 100 kg/h. The experimental results show that a heat transfer enhancement in terms the thermal efficiency is obtained with inserted baffle arrangements. An increase in the inlet temperature of air causes a decrease in temperature rise as well as the thermal efficiency of the collector. The results indicated that the increase in baffle length has a positive impact on temperature rise and thermal efficiency but induces higher pumping power. It is concluded that the developed evacuated tube solar air collector has sufficient potential for industrial process heating applications.

在室内太阳热模拟器下，通过实验和分析方法研究了带隔板的真空管式太阳能集热器（ETSACIB）的热性能。分析了诸如流量，进气温度，挡板长度和日照等操作参数对ETSACIB系统热性能的影响。实验进行了不同的空气流量（100–1000 kg / h）。在流量为100 kg / h时，最高升温效率为42.8°C，最低热效率为35.31％。实验结果表明，采用插入的挡板装置可以获得热效率方面的传热增强。空气入口温度的升高导致温度升高以及集热器的热效率降低。结果表明，挡板长度的增加对温度升高和热效率有积极影响，但会引起更高的泵送功率。结论是，开发的真空管太阳能空气收集器具有足够的潜力用于工业过程加热应用。