Enhancing the Performance of a Solar Air Heater with Arc-shaped Artificial Rib Roughness

For the purpose of drying agricultural commodities, heating rooms, seasoning timber, and curing industrial things, the Solar Air Heater (SAH) is frequently used. Moreover, SAH is the least expensive option available. A purposefully roughened surface can boost heat delivery to SAH fluid in the duct. For the larger part of the last 4 decades, researchers have been conducting studies exploring the possibility of incorporating artificial roughness into SAHs. This paper attempts to describe the numerous roughness geometry types that can be used to artificially roughen SAHs to improve their performance. This article presents the findings of a number of experimental and computational studies that were conducted on SAHs that were roughened utilizing a variety of different forms of arc shaped rib roughness geometry. This article examines the influence of several rib variables on heat transfer and fluid dynamics. Major Findings: Solar air heaters benefit from wire rib roughness designs that promote heat transmission and friction. V-rib and arc-shaped geometries had higher heat transmission due to secondary flow cell growth. Roughness patterns like gaped arrangements increase turbulence and mixing flow, improving heat transfer.