Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
If you are using Airflow Network objects, then to account for convective heat transfer on inner and outer surfaces of ducts use the AirflowNetwork:Distribution:Component:Duct object. To model supply or return air leakage in ducting, use the AirflowNetwork:Distribution:Component:Leak or AirflowNetwork:Distribution:Component:LeakageRatio objects.
There is a similar post on Unmet Hours here that you can refer to about modeling ducts and their leakages in EnergyPlus Airflow Network objects.
