Revisiting the Effect of Rib Roughness on the Performance of Solar Air Heater Neeraj Kumar Nagayach, Kanishk Sharma, Yogesh Agrawal and Anil Singh Yadav E3S Web Conf., 430 (2023) 01264 Published online: 06 October 2023 DOI: 10.1051/e3sconf/202343001264