[EnergyPlus_Support] Natural Ventilation - Ventilation Object

["Arno Dentel" <arno.dentel@xxxxxxxxxxxxxxx>]

Hello.
I want to modell natural ventilation through external windows. The
airfolw should 
depend to the outside temperature. 
The users should open the windows if the outside temperature is above 0
°C. 
And if the outside temperature is lower then 0 °C the windows are
closed.
So I modified the ventilation equation with a Temperature Term
Coefficent of -0.05.
But by outside temperatures under 0 °C, the airflow and
Ventilation-Sensible Heat Loss are negative.
What does EnergyPlus claculate in that case?
Has the negative airflow an influence of the energy balance.

Thanks in advance.
Arno





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