RE: [EnergyPlus_Support] Re: AFN How to Simulate Hung-Windows?

[Lixing Gu <gu@xxxxxxxxxxxx>]

Tobias:

Glad to know you made it work using a small crack at the other side and
verify results. I think you may use the detailed opening object to represent
big windows, if you think the detailed opening model can meet your
requirements. 

What is your definition of cross-ventilation?

Lixing

-----Original Message-----
From: EnergyPlus_Support@xxxxxxxxxxxxxxx
[mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of tobiasschulzeoooitu
Sent: Wednesday, October 05, 2011 11:54 AM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: [EnergyPlus_Support] Re: AFN How to Simulate Hung-Windows?

Dear Lixing,

it does, if you chose a "detailed opening" for the bidirectional flow and as
a second pseudo opening a very small crack on some other construction than
the window (only to have two openings - which is necessary). I checked it
against some simple analytical solutions and it worked out fine.

Any ideas for hung-windows and cross-ventilation?

Tobias



--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Lixing Gu <gu@...> wrote:
>
> Tobias:
> 
> The AirflowNetwork model does not support single side ventilation. Please
> let us know if you find a good network model to simulate two-way flows at
a
> single opening.
> 
> Hope this helps.
> 
> Lixing Gu
> 
> -----Original Message-----
> From: EnergyPlus_Support@xxxxxxxxxxxxxxx
> [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of
tobiasschulzeoooitu
> Sent: Wednesday, October 05, 2011 11:01 AM
> To: EnergyPlus_Support@xxxxxxxxxxxxxxx
> Subject: [EnergyPlus_Support] AFN How to Simulate Hung-Windows?
> 
> Hello,
> 
> I couldn't find how to describe Hung-Windows (top/bottom/side) in the AFN
-
> Model. May be the effective Area would be a way for cross ventilation, but
> how to deal with bidirectional single sided ventilation? I plan to
simulate
> the ventilation rates according to an opening angle of hung windows.
> Variables i could use (probably together with EMS) are the discharge
> coefficient, the window hight, the window width and the opening factor. I
> think for a controlled, bidirectional flow the detailed opening model
should
> be best. Do you have any recommendations how to model or some literature
> describing the problem?
> 
> Thank you,
> Tobias
> 
> 
> 
> 
> 
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