A review of SPSAH and DPSAH characteristics by variation of fluid profile in the duct

Abstract The thermal performance of solar air heaters can be enhanced by increasing the rate of heat transfer. The thermal performance of DPSAH is higher than that of SPSAH based on the study of various researchers. Many researchers have studied the performance analysis of solar air heaters with various heat transfer enhancement techniques like using fins, corrugated absorber plate, packed bed, generating turbulence to the flow. By using ribs of different geometrical shapes and sizes attached to the absorber plate turbulence increases which in turn increases the thermal and thermo-hydraulic performances of the solar air heater. The paper presents the study of the research carried on various processes used to increase turbulence and so thermal performance of SPSAH and DPSAH.