In this work, an experimental study was carried out to investigate the enhancement of heat transfer and friction factor characteristics of an impinging jet solar air heater integrated with twisted tape fins. During the analysis, the Reynolds number fin design parameters namely twist ratio (Y), and pitch ratio (p_y) are varied from 3500 –13500, 5.5–9.5, and 0.1–0.3, respectively. During the experimentation, the constant heat flux of 1000 W/m² was maintained on the absorber plate. From the results, it was observed that the heat transfer rate increases while increasing the twist ratio up to 7.5 and further increase in twist ratio diminishes the performance. It was also concluded that the rise in pitch ratio (p_y) deteriorates the rate of heat transfer. The present work enhances the heat transfer and friction factor by the maximum of 1.9 and 1.81 times as compared with the conventional jet impingement solar air heater at identical operating conditions.

在这项工作中，进行了一项实验研究，以研究与扭曲带状翅片集成的撞击式射流太阳能空气加热器的传热和摩擦系数特性的增强。在分析过程中，雷诺数鳍设计参数即扭曲比（Y）和俯仰比（p _y）分别从3500 –13500、5.5 –9.5和0.1–0.3变化。在实验过程中，在吸收板上保持了1000 W / m ²的恒定热通量。从结果可以看出，传热速率增加，同时将扭曲比提高到7.5，并且进一步增加扭曲比会降低性能。还得出结论，俯仰比（p _y）会降低传热速率。在相同的工作条件下，与传统的射流式太阳能空气加热器相比，本发明的传热和摩擦系数最大提高了1.9和1.81倍。