Optimization of multiple arcs protrusion obstacle parameters using AHP-TOPSIS approach in an impingement jet solar air passage

Abstract

Present investigation studied the influence of flow and geometric factors on the behavior of solar air passage (SAP) offered among the circular impingement air jets. The experimentation is performed for the variant criterion which is relevant to establish the best design of SAP. The experimental examination shows that the air impingement jet improves the thermal efficiency of a collector but at concurrent period friction factor rate also increases which reduces the whole functioning of arrangement. To overcome this analytical hierarchy process and order of preference by similarity to ideal solution (AHP-TOPSIS) technique is adopted using different performance condition in order to find out the best set of geometric parameters which provides the highest thermal efficiency and lowest friction factor within the SAP. The superlative set of geometric parameters achieved as a response of considered process is relative width ratio of 3, the relative height ratio of 1.0, relative pitch ratio of 9.5, the angle of arc 550 and tream Reynolds number of 19,000 respectively