Thongdaeng, Sanhawat, Namphon Pipatpaiboon, and Sampan Rittidech. “Influence of void fraction and filling ratio on heat transfer characteristics of a packing bed thermosyphon (PBTP)”. Asia-Pacific Journal of Science and Technology 19, no. 1 (April 12, 2017): 75–81. accessed April 22, 2026. https://so01.tci-thaijo.org/index.php/APST/article/view/82898.