AFN Infiltration and ventilation questions

Hello @MatteoMerli
Firstly, I’d like to express my appreciation for your comprehensive response—it was incredibly helpful. I’ve made progress in converting the hourly infiltration air change rate (ACH) to Qafn based on their units. But I also have multiple zones so I will try to use the new formula that you proposed.

However, I also realized that this method does not fix the issue entirely. I’m still facing some challenges as I continue to encounter discrepancies in hourly operative temperatures and relative humidity values for a specific zone when modeled through the AFN compared to a default simple model (using Qifrea). I’ve actually initiated a new forum topic to delve deeper into this issue. HB AFN model results not consistent with the default simple simulation

To ensure clarity, I have a few questions:

In your formula, when you mention “n,” I assume it’s the same “n” as before, correct? (A constant value equal to 0.65).

I also have a query regarding the EnergyPlus object you introduced. As I’m primarily investigating the impact of natural ventilation, should I incorporate the airflow rate through the opened windows as an input for this object, or does it mainly pertain to the infiltration rate, primarily related to opaque surfaces?

Many thanks,
Shadab