Paper Title
Exergy based Analysis of Solar Air Heater with Arc Shaped Roughened Absorber Plate

Abstract
This paper deals with the exergetic analysis of the artificially roughened duct of a solar air heater in the form of different Arc shaped ribs. Exergy efficiency is the method used to evaluate the performance of solar air heater as it takes into consideration the energy that has been successfully converted into useful work. The absorber plate of the solar air heater is roughened in or plate which carry ribs. In this paper a literature review is done on various types of Arc shape rib geometries incorporated in solar air heater duct. It is found that protrusion on Arc shape ribs give the maximum exergetic efficiency. Index Terms - Solar air heater, arc shape roughness, effective efficiency, exergetic efficiency.