Enhancing Solar Air Heater Performance with Quatrefoil Artificial Roughness: An Adaptive Neuro-Fuzzy System ApproachP. Rajkumar, J. Melvin Jones, L. Nirmal Raj and B. AnandE3S Web Conf., 477 (2024) 00088DOI: https://doi.org/10.1051/e3sconf/202447700088