ชุมนุมวัฒน์ ศ., หลีชัย น., & เครือผือ ธ. (2019). A Feasibility Study of Solar Collector for Preheating Feed Water of Wood-Fired Boiler System. Research on Modern science and Utilizing Technological Innovation Journal (RMUTI Journal), 12(1), 12–26. retrieved from https://ph01.tci-thaijo.org/index.php/rmutijo/article/view/187666