Tenzin (2025) “Optimizing Energy Efficiency and Thermal Comfort Through HVAC Duct Design of Mechanical Building”, JNEC Thruel Rig Sar Toed , 7(1), pp. 71–88. Available at: https://trst.jnec.edu.bt/index.php/thruelrigsartoed/article/view/40 (Accessed: 13 December 2025).