Published Paper Details:

Solar Air Heater (SAH) is device which is mostly used to heat air in cold climates .That heated air a lots of application including warming building ,agricultural producer etc. In present work an experiment has been done to see how a Solar Air Heater (SAH) can be made more effective. This study examines the thermal performance of a Solar Air Heater (SAH) with a W- discrete, V - discrete, and a plain absorber plate at various mass flow rates. Outlet air temperature and thermal efficiency were two experimental outputs that were evaluated to confirm the performance. At a mass flow rate of 0.049 kg/s, the W - discrete absorber plate SAH was found to have a maximum thermal efficiency of 83%, which is respectively 39.83% and 30.16% greater than the W - discrete and V- discrete SAH. This study showed that for the parameter under consideration, flow configurations with W - discrete and V- discrete solar plate outperform and smooth plate SAH in terms of thermal performance. The angle at which air strike V - discrete absorber plate is 60o, where as the air has to strike two 60o angled plate for the case W-discrete absorber plate. As the friction factor has high value for two 60o in (W- discrete solar plate).The thermal performance of absorber plate with W- discrete is high.