ducted system heat-load calculation 4

https://ace-wiki.win/index.php/Why_Ducting_in_Roof_Cavity_Matters_for_Canberra%27s_Climate

To figure out heat load in a ducted system, you start by adding up all the thermal gains in each zone—from people, equipment, lights, and solar exposure. This total load then guides the required airflow and duct sizing to keep spaces comfortable. It's a balancing act between heat sources and system capacity.