Skullong S. Performance enhancement in a solar air heater duct with inclined ribs mounted on the absorber. J. Res. Appl. Mech. Eng. [Internet]. 2018 Jul. 25 [cited 2024 Apr. 26];5(1):55-64. Available from: https://ph01.tci-thaijo.org/index.php/jrame/article/view/136600