[EnergyPlus_Support] Re: Vented PV Cavity

["lnttony" <lnttony@xxxxxxxxxxxx>]

Dear Brent Griffith,
 
Thanks for your reply!
 
In my case, there is a 3-story building. The west-facing facades at 
the 2nd and 3rd floor were attached with vented PV panels.

Files related to the PV panels were uploaded ("For enquiry to 
EnergyPlus.zip"). There are 3 word document files and the related 
items were highlighted in green color. The other files can be opened 
with TextPad.
 
The surface material of the exterior wall is "glass". You can see 
the details (highlighted in green color) in "construction_material
(IDF file).doc".
 
If there is any more information I should give you, please ask me to 
do so.
 
Thanks again.
 
Best Regards,
Tony LAM
 








--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "Griffith, Brent" 
<brent_griffith@...> wrote:
>
> It is difficult to say with out seeing the file, you could up load 
it.
> Did you setup the electric load center and the PV generators and 
set
> them to be integrated?  What is the surface material like in the
> reference case? 
> 
>  
> 
>  
> 
>  
> 
>   _____  
> 
> From: EnergyPlus_Support@xxxxxxxxxxxxxxx
> [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of lnttony
> Sent: Friday, July 14, 2006 8:57 PM
> To: EnergyPlus_Support@xxxxxxxxxxxxxxx
> Subject: [EnergyPlus_Support] Vented PV Cavity
> 
>  
> 
> Dear all,
> 
> I am modeling the building integrated photovolatic (BIPV) system 
for 
> the building facade. The photovoltaic (PV) panels were attached on 
> the exterior wall with an air cavity between them. I want the PV 
> panels to serve as a solar heat barrier. But I have problem in the 
> heat gain on the facade.
> 
> By using "OtherSideConditionsModel", I applied "Vented PV Cavity" 
as 
> the type of modeling used to determine boundary conditions. 
> The "SURFACE:HEATTRANSFER:EXTERIORNATURALVENTEDCAVITY" object is 
> used to describe the condition. However, there is no heat gain 
> reduction for the underlying surface (i.e the exterior wall), even 
> the required cooling energy for the corresponding zone is higher.
> 
> Is there any mistake I have made? Or, is there any part I have to 
> pay attention on?
> I would be very happy if I can receive any kind advice and help.
> 
> Best Regards,
> Tony LAM
> 
>  
> 
> 
> 
> [Non-text portions of this message have been removed]
>






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