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RE: [EnergyPlus_Support] Window U-factor follow up question





Thanks all for your replies.

 

The keyword is “Ratio of Frame-Edge Glass Conductance to Center-Of-Glass Conductance” and is defined in the WindowProperty:FrameAndDivider object.

 

 

cid:image003.png@01D09C46.E75BA0D0

Christopher Jones, P.Eng.
Senior Engineer

 

WSP Canada Inc.

2300 Yonge Street, Suite 2300

Toronto, ON M4P 1E4
T +1 416-644-4226

F +1 416-487-9766

C +1 416-697-0056

 

www.wspgroup.com

 

From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx]
Sent: Friday, February 19, 2016 8:00 PM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: Re: [EnergyPlus_Support] Window U-factor follow up question

 

 

There's a field for...it's late after a 14 hour grind...something like the ratio of U-frame to U-edge...memory is just not working, sorry. It's always greater than 1 (usually around 1.2) and takes care of the thermal break from CoG to Frame. WINDOW calculates it for it's IDF output.

On 19 Feb 2016 1:55 pm, "'Jones, Christopher' Christopher.r.Jones@xxxxxxxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:

 

I am used to the overall window U-factor being calculated from three areas of the window � frame U-factor, edge U-factor and COG U-factor. The area weighted average of these three factors calculates the overall window U-factor. EnergyPlus has inputs for frame U-factor and glass U-factor. How does the edge U-factor fit into the picture?

 

 

cid:image003.png@01D09C46.E75BA0D0

Christopher Jones, P.Eng.
Senior Engineer

 

WSP Canada Inc.

2300 Yonge Street, Suite 2300

Toronto, ON M4P 1E4
T +1 416-644-4226

F +1 416-487-9766

C +1 416-697-0056

 

www.wspgroup.com

 

From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx]
Sent: Friday, February 19, 2016 6:14 AM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: [EnergyPlus_Support] Re: Window U-factor

 

 

Dear Edward

 

Thank you for your suggestion.

 

Hossein



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