[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

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





The window edge-of-glass U-factor is defined using the Ratio of Frame-Edge Glass Conductance to Center-Of-Glass Conductance field in the WindowProperty:FrameAndDivider object. If you know your center-of-glass U-factor, then you can determine the correct ratio that gives you the edge-of-glass U-factor you want.

On Fri, Feb 19, 2016 at 8:09 AM, 'Edward G. Lyon' eglyon@xxxxxxx [EnergyPlus_Support] <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:
 

You can find a good description of how E+ uses WINDOW data here

 

http://nrel.github.io/EnergyPlus/Tips_and_Tricks_Using_EnergyPlus/Tips_and_Tricks_Using_EnergyPlus/#input

 

Basically a center of glass value is modified by an edge correction ratio from WINDOW

 

Ned Lyon, P.E. (MA, WV)
Staff Consultant

SIMPSON GUMPERTZ & HEGER
781.907.9000 main
781.907.9350 direct 
617.285.2162 mobile 
781.907.9009 fax
www.sgh.com

 

From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx]
Sent: Friday, February 19, 2016 7:55 AM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: [EnergyPlus_Support] Window U-factor follow up question

 

 

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



You are receiving this communication because you are listed as a current WSP contact. Should you have any questions regarding WSPâ??s electronic communications policy, please consult our Anti-Spam Commitment www.wspgroup.com/casl. For any concern or if you believe you should not be receiving this message, please forward this message to us at caslcompliance@xxxxxxxxxxxx so that we can promptly address your request. This message is intended only for the use of the individual or entity to which it is addressed, and may contain information which is privileged, confidential, proprietary or exempt from disclosure under applicable law. If you are not the intended recipient or the person responsible for delivering the message to the intended recipient, you are strictly prohibited from disclosing, distributing, copying or in any way using this message. If you have received this communication in error, please notify the sender, and destroy and delete any copies you may have received.

WSP provides professional land surveying services through the following entities: WSP Surveys (AB) Limited Partnership and WSP Surveys (BC) Limited Partnership




__._,_.___

Posted by: Neal Kruis <neal.kruis@xxxxxxxxxxxxxxxxxxxxx>


Primary EnergyPlus support is found at:
http://energyplus.helpserve.com or send a message to energyplus-support@xxxxxxxx

The primary EnergyPlus web site is found at:
http://www.energyplus.gov

The group web site is:
http://groups.yahoo.com/group/EnergyPlus_Support/

Attachments are currently allowed but be mindful that not everyone has a high speed connection.  Limit attachments to small files.

EnergyPlus Documentation is searchable.  Open EPlusMainMenu.pdf under the Documentation link and press the "search" button.




Visit Your Group
Yahoo! Groups
PrivacyUnsubscribeTerms of Use

__,_._,___