I'm currently modeling residential single family homes in EnergyPlus with a variety of HVAC systems, both central and zonal. I'm currently using an Airflow Network in all cases - for the central systems I'm using "MultizoneWithDistribution" control and for the zonal systems I'm using "MultizoneWithoutDistribution".
Most of the HVAC system results look fine relative to one another (including both central systems and zonal electric resistance baseboard heat), but when I add in a windowAC unit to the baseboard system, the result does not look right. For example, the windowAC unit appears to increase infiltration significantly all year round (~4x), even if I only make it available during the summer months, and the windowAC + baseboard system uses significantly more heat than an electric forced air system in the same home.
Has anyone else experienced an issue similar to this or know why a window AC would have such an effect on the AFN? I was told by a colleague that @Jason DeGraw is particularly familiar with AFNs.
Many thanks, Christian
