An Investigation into The Enhancement of Heat Transfer in Roughened Ducts of Solar Air Heaters. Indian Journal of Production and Thermal Engineering (IJPTE), [S. l.], v. 4, n. 1, p. 1–4, 2024. DOI: 10.54105/ijpte.A2023.124123. Disponível em: https://www.journals.latticescipub.com/index.php/ijpte/article/view/551.. Acesso em: 10 may. 2025.