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[EnergyPlus_Support] Re: Mechanical night ventilation

Hi Liam, thanks for your response!

I tried this solution, but it wasn't successful. It seems these objects "zone ventilation" and "zone infiltration" cannot be simulated among air flow network (see below the err reports): 

1) First simulation:
** Warning ** GetAirflowNetworkInput: AirflowNetwork:SimulationControl object, Specified AirflowNetwork Control = "MultizoneWithoutDistribution" and ZoneVentilation objects are present.
   **   ~~~   ** ..ZoneVentilation objects will not be simulated.

2) Second simulation:
** Warning ** GetAirflowNetworkInput: AirflowNetwork:SimulationControl object, Specified AirflowNetwork Control = "MultizoneWithDistribution" and ZoneVentilation objects are present.
   **   ~~~   ** ..ZoneVentilation objects will not be simulated.

That's the question: I need to simulate with air flow network, to obtain results related to natural ventilation, considering windows opening and variable wind direction. So, there is some way to simulate a fan operating "inside" the air flow network option?

Thanks in advance,

Juliana



--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "Liam O'Brien" <liambrn@...> wrote:
>
> A simpler solution to an airflow network, would be to use ZoneVentilation.  You can have the ventilation rate dependent on the indoor and outdoor temperatures.  To restrict ventilation to 21:00 to 7:00 using a compact schedule, but I believe you'll have to allow it upto: 7, not upto: 21, and upto: 24.  You can also predict fan energy using the ZoneVentilition object.
> 
> Liam O'Brien
> 
> --- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "juobatista" <juobatista@> wrote:
> >
> > Hi!
> > 
> > I simulated a model of a house with natural ventilation during day hours, using airflow network in Energy Plus. But I need to combine natural ventilation with mechanical night ventilation (9 P.M to 7 A.M). The system consists in a simple intake fan, positioned in a hole on the wall, with constant flow, operated by electricity. 
> > 
> > How can I do it? I tried zone infiltration (zone air flow) + a apropriated schedule but it wasn't successful. 
> > 
> > Thanks!
> > 
> > Juliana
> >
>




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