Sinjapo, Suradech, Jattupon Pongkun, Pilin Hankhuntod, and Niwat Ketchat. 2026. “Thermal Efficiency Enhancement in Solar Collectors Using Porous Duct Absorbers for a Solar Dryer”. Journal of Engineering and Industrial Technology, Kalasin University 4 (3):48-57. https://doi.org/10.14456/jeit.2026.18.