Keawboonchu, Jutarat, Wissawa Malakan, Wisit Thongkum, and Sarawut Thepanondh. 2018. “Effect of the Waste Heat Recovery System to Buoyancy and Momentum Flux of Combustion Stack in the Cement Industry”. Environment and Natural Resources Journal 17 (1). Nakhon Pathom, Thailand:Page 11-21; DOI: 10.32526/ennrj.17.1.2019.02. https://ph02.tci-thaijo.org/index.php/ennrj/article/view/162132.