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

RE: [EnergyPlus_Support] Thermal bridging/Edge losses



Usually I use the following procedure:

*	Calculate with other appropriate method the Y value (linear thermal transmittance) you can use EN ISO 10211(calculation method) or EN ISO 14383 (default values) or THREM software or.....
*	In your Energy+ file you introduce a sub-surface with the same length as your thermal bridge but with a "very small" width
*	You introduce in your Energy+ file a "thermal bridge construction" with R procedure.
*	In the previous step you define your R value in order to obtain the same thermal transmission

Y*l = U * l * d
R = 1/U

 
In my opinion using this procedure you can introduce thermal bridging effect.
 
Thermal bridging effect is one of the most frequent weakness (even in Energy+) in thermal simulation software.
 
Josep Sole
URSA Iberica Aislntes SA

-----Mensaje original-----
De: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx]En nombre de mkenergycentre
Enviado el: viernes, 27 de enero de 2006 15:27
Para: EnergyPlus_Support@xxxxxxxxxxxxxxx
Asunto: [EnergyPlus_Support] Thermal bridging/Edge losses


Dear All

Anyone know the best way to include the extra conductance associated 
with 'corners' for a room (sometimes known as edge losses) in 
EnergyPlus?

I've seen a previous post suggesting typical bridging (e.g. stud walls) 
should be done by adding a surface of the correct size and thermal 
properties, or, by modifiying the overall thermal properties of a 
single 'composite' surface. Is this still the best way?

Is there a way to include the concept of linear thermal resistance 
(W/mK) given edge lengths?

Thanks
David.






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 not allowed -- please post any files to the appropriate folder in the Files area of the Support Web Site.

EnergyPlus Documentation is searchable.  Open EPlusMainMenu.idf and press the "search" button.





SPONSORED LINKS 
Cad  <http://groups.yahoo.com/gads?t=ms&k=Cad+software+program&w1=Cad+software+program&w2=Backup+software+program&w3=Maintenance+program+software&w4=Email+software+program&w5=Medical+software+program&w6=Wedding+program+software&c=6&s=177&.sig=dAoC8etSQ29cW7BDCsd_Xg> software program 	Backup  <http://groups.yahoo.com/gads?t=ms&k=Backup+software+program&w1=Cad+software+program&w2=Backup+software+program&w3=Maintenance+program+software&w4=Email+software+program&w5=Medical+software+program&w6=Wedding+program+software&c=6&s=177&.sig=pGbg986dgJsrhDeNiD305w> software program 	Maintenance  <http://groups.yahoo.com/gads?t=ms&k=Maintenance+program+software&w1=Cad+software+program&w2=Backup+software+program&w3=Maintenance+program+software&w4=Email+software+program&w5=Medical+software+program&w6=Wedding+program+software&c=6&s=177&.sig=g9STJMRTJGf5Aql1PCptyA> program software 	
Email  <http://groups.yahoo.com/gads?t=ms&k=Email+software+program&w1=Cad+software+program&w2=Backup+software+program&w3=Maintenance+program+software&w4=Email+software+program&w5=Medical+software+program&w6=Wedding+program+software&c=6&s=177&.sig=aSekB9VE-HyqYOiwBHR4XA> software program 	Medical  <http://groups.yahoo.com/gads?t=ms&k=Medical+software+program&w1=Cad+software+program&w2=Backup+software+program&w3=Maintenance+program+software&w4=Email+software+program&w5=Medical+software+program&w6=Wedding+program+software&c=6&s=177&.sig=-UhKzvYQ-9uIgCXMT0l7LQ> software program 	Wedding  <http://groups.yahoo.com/gads?t=ms&k=Wedding+program+software&w1=Cad+software+program&w2=Backup+software+program&w3=Maintenance+program+software&w4=Email+software+program&w5=Medical+software+program&w6=Wedding+program+software&c=6&s=177&.sig=fcgVMHGaCmWY0dtnPOkafA> program software 	

  _____  

YAHOO! GROUPS LINKS 


	
*	 Visit your group " EnergyPlus_Support <http://groups.yahoo.com/group/EnergyPlus_Support> " on the web.
  

*	 To unsubscribe from this group, send an email to:
  EnergyPlus_Support-unsubscribe@xxxxxxxxxxxxxxx <mailto:EnergyPlus_Support-unsubscribe@xxxxxxxxxxxxxxx?subject=Unsubscribe> 
  

*	 Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service <http://docs.yahoo.com/info/terms/> . 


  _____  




[Non-text portions of this message have been removed]



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 not allowed -- please post any files to the appropriate folder in the Files area of the Support Web Site.

EnergyPlus Documentation is searchable.  Open EPlusMainMenu.idf and press the "search" button.
 
Yahoo! Groups Links

<*> To visit your group on the web, go to:
    http://groups.yahoo.com/group/EnergyPlus_Support/

<*> To unsubscribe from this group, send an email to:
    EnergyPlus_Support-unsubscribe@xxxxxxxxxxxxxxx

<*> Your use of Yahoo! Groups is subject to:
    http://docs.yahoo.com/info/terms/