Adding flow-disturbing components to the absorber plate's effective heat transfer zone is the most efficient Thermo-hydraulic performance enhancement approach for a solar air heater (SAH). Researchers are attempting to decide the best geometrical parameters for a SAH when the turbulent flow has fully established with fabricated roughness protrusions on the absorber surface plate in a cone-shaped contour. The Thermo-hydraulic performance of the proposed SAH design is taken into account throughout the optimization process. Air flow rate and geometrical variables such as the Reynolds number $\left(\mathrm{R}\mathrm{e}=3000\right.$ to $\left.8000\right)$, relative rib pitch $\left(p/e=10\right.$ to $\left.20\right)$, and relative rib gap $\left(w/e=4\right.$ to $\left.8\right)$ are varied in a series of experiments to assess the SAH's performance. Flow angle of attack (α = 90°), relative roughness height (e/D_h = 0.08), and rectangular flow passage aspect ratio (W/H = 5) are maintained constant in all the trials for inline and staggered configurations. Series of tests are carried out to establish statistical correlations between the average Nusselt number and the average friction factor. Thermo-hydraulic performance is affected by the Reynolds number (Re) as well as relative roughness gaps (w/e) and relative roughness pitch (p/e) of the conical protrusions. There was a 64.5% increase in Nusselt number and a 153.3% increase in friction factor at Re = 8000, p/e = 10 and w/e = 4. Cone-shaped roughness, as suggested, has a Thermo-hydraulic efficiency index of 0.8233, which ocuurs at p/e = 20 and w/e = 8 at Re = 3000.

在吸收板的有效传热区添加扰流组件是太阳能空气加热器 (SAH) 最有效的热工水力性能增强方法。当湍流完全建立时，研究人员正试图确定 SAH 的最佳几何参数，并在吸收器表面板上以锥形轮廓制造粗糙突起。在整个优化过程中考虑了所提出的 SAH 设计的热工水力性能。空气流速和几何变量，例如雷诺数$\left(\mathrm{R}\mathrm{e}=3000\right.$至$\left.8000\right)$, 相对肋间距$\left(p/e=10\right.$至$\left.20\right)$, 和相对肋间隙$\left(w/e=4\right.$至$\left.8\right)$在一系列实验中变化，以评估 SAH 的性能。在直列和交错配置的所有试验中，流动攻角 ( α  = 90°)、相对粗糙度高度 ( e / D _h  = 0.08) 和矩形流道纵横比 ( W / H  = 5) 保持不变。进行一系列测试以建立平均努塞尔数和平均摩擦系数之间的统计相关性。热工水力性能受雷诺数 (Re) 以及相对粗糙度间隙 ( w / e ) 和相对粗糙度间距 ( p / e ) 的影响) 的锥形突起。在 Re = 8000、p / e  = 10 和w / e  = 4 时，努塞尔数增加了 64.5%，摩擦系数增加了 153.3%。如建议的那样，锥形粗糙度的热水力效率指数为0.8233，发生在p / e  = 20 和w / e  = 8 时 Re = 3000。