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[EnergyPlus_Support] Re: DoubleFacade

I think that the best way is to split your double facade on a number of vertical zones with an air node model on these zones ( the common walls should be air). 
This way you can simulate the wind induced forces (you have to know the Cp) and the buoyancy forces. It's a quite complex model.

If you model it as a vertical wall or Tromb wall or thermal chimney see the limitation on the convection coefficient that uses according the Reinold and Rayleigh number...(in practice the distance between the facade and the the external wall) 

hope it helps

Regards


--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "rachele89" <silvia1-@...> wrote:
>
> Actually I defined it as a new zone becouse I want a double glazing facade and not just a ventilated one! But maybe I could try both the solutions and maybe your strategy will be easyier... thank you
> 
> --- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Jason Kirkpatrick <jason.alan.kirkpatrick@> wrote:
> >
> > If you defined the double wall as a construction with a large air gap, you
> > can use the WindowProperty:AirflowControl to ventilate the cavity in one of
> > the below configurations. If you modeled each cavity as a separate zone you
> > have more flexibility in defining the air pathways by considering them
> > supply or return plenums
> > 
> > [image: Inline image 1]
> > 
> > 
> > On Thu, Apr 11, 2013 at 10:32 AM, Javed Iqbal <eee.javed@> wrote:
> > 
> > > **
> > >
> > >
> > > Hi,
> > >
> > > You should check *Thermal chimney* or *Tromby wall Active* in example
> > > file folder that comes with default installation.
> > >
> > > Regards,
> > >
> > > On Thu, Apr 11, 2013 at 9:57 AM, rachele89 <silvia1-@xxxxxxxxxx> wrote:
> > >
> > >> **
> > >>
> > >>
> > >> Hi everybody!
> > >> I need to simulate a double glazing facade on my five stores office
> > >> building. After I designed it with Open Studio, how can I manage the
> > >> air-flow rate through this ventilated facade?
> > >> Thank you for any suggestion
> > >>
> > >>
> > >
> > >
> > > --
> > >
> > >
> > > Javed Iqbal, LEED AP, CEA
> > > Energy Analyst
> > >
> > >
> > >
> > >
> > >
> > >   
> > >
> >
>




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