Performance of solar air heater with v-discrete ribs on absorber plate

The work presents results of an experimental study of performance of a solar air heater with v-discrete rib roughness on the airflow side of the absorber plate along with that for a smooth duct air heater. The experimental data have been used to validate a mathematical model, which can be employed for design and prediction of performance of both smooth and roughened air heaters under different operating conditions.The results of a detailed performance study of the solar air heater with v-down discrete rib roughness using the mathematical model are presented.