Re: [EnergyPlus_Support] Interior high performance glazing

[Linda Lawrie <linda@xxxxxxxxxx>]

At 12:22 PM 12/20/2005, Ian Doebber wrote:

>I'm modeling a double skin façade during the 
>winter when the control dampers are closed such 
>that the external cavity is sealed from the 
>outside.  Before I model it, I wanted to ask how 
>to go about creating the interior window that 
>seperates the cavity and the internal space.  It 
>is a double glazing with a low-e coating on the 
>external glass of the double glazing.  I know 
>for shared walls, the construction layers have 
>to be reversed.  Does the same hold true for windows.

That's a good question.  I'm not sure.  The only 
interior window example file we have uses single 
glazing;  I suppose to be safe, you would reverse the layers.


>I'm using Window 5 to create my 
>construction.  If I have to use reversed layers, 
>am I right in assuming that I would have to have 
>Window 5 create two report files, one the reverse of the other.

Yes

>  From my previous experience with referencing a 
> Window 5 report, only one could be used called 
> "Window5DataFile" in the EnergyPlus main 
> directory and the window had to be called 
> "WindowConstruction".  Do these constraints 
> still hold true or can I have multiple Window 5 files and name them anything.

I don't remember when the window had to be called 
"WindowConstruction".  The Window can be called 
whatever -- I've seen many different ones 
used.   You can also have multiple Window5 files 
but would have to put in their names (path name 
optional -- but the whole string is limited to 60 
characters) in the CONSTRUCTION FROM WINDOW5 DATA FILE object.

For example,
CONSTRUCTION FROM WINDOW5 DATA FILE,
   my window 1,  ! Name
   DataSets\win51.dat;

would look for "my window 1" in file <from where 
energyplus.exe is>\DataSets\win51.dat

Or you can merge all your window 5 data files 
into one file -- just string together, but you'd 
have to name the window constructions uniquely.







Linda

EnergyPlus WebSite: http://www.energyplus.gov
Owner: EnergyPlus_Support list
Member: EnergyPlus Development Team



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