I have a Core and Shell building where there is an air-to-air heat pump. This HVAC system has the opportunity to do the free cooling in summer season when outdoor air temperatur is lower than indoor air temperature. When free-cooling control is acrivated the outdoor air flow rate is greater than the minimum. Minimum outdoor air flow rate it is used for the baseline model.
So, do I have to model the free-cooling control in the baseline system? Or, how can I model the free cooling control? (climate zone 4a)