double facade - passive natural ventilation

steinwidder · Posts: 3

hello,
i'm trying to simulate a double facade with calculated natural ventilation. I would like to avoid temperature control of natural ventilation so I set a the Ventilation cooling setpoint temperature to 0°C.
What happens now is that during the winter period the temperature decreases below 0°C and the natural ventilation stops. In my case this is technically not possible and so i wonder if is it possible to switch off this regulation to have a totally passive facade all over the year?
Thanks al lot,
Thomas.

Teresa · Posts: 5

Hi Thomas!
I think that in your case, it´s easier to think about a simple facade, regarding only the internal wall face, ´cause you don´t have any problem with seasonal ventilation, so you must regard only the face that works...I answer you as the theory...
Bye!
Teresa

steinwidder · Posts: 3

Hello Teresa,
thanks for your answer. That´s a way that should work, but I´m afraid I have to simulate the double facade to evaluate the impact of the double facade on the evolving temperature in the gap between the two skins.
I think the only solution is to reduce the natural ventilation cooling setpoint temperature beneath 0°C. So I would like to fix this value to say -20°C to avoid any active temperature control. But the scale only allows a minimum cooling setpoint of 0°C. Is it possible to enlarge this scale manually?

AOG · Posts: 73

Thomas,

You can do that by deactivating ‘Use slider controls’, in Program options > Interface > Interface style. Then you will be able to input the values manually.

Arturo

steinwidder · Posts: 3

Hello Arturo,

thanks a lot for your support. Now it works as i wanted it to.
Perfect.

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