Re: [EnergyPlus_Support] Radiant system - boundary condition

["Michael J. Witte" <mjwitte@xxxxxxxx>]

1.  Yes, it should be a construction with internal source, a mirror of the 
ceiling construction.

2.  The low temp radiant system should be connected to the surface for the zone 
which is controlling the heat output.  In this case, that would be the ceiling. 
 The floor surface above (which is the outside face environment object for the 
ceiling) is not connected to a low temp radiant system.  But it will be warm 
due to heat transfer from the internal source traveling both toward the ceiling 
below and the floor above.

Mike


On 4 Jan 2008 at 14:01, e_matta81 wrote:

> Hi,
> I'm trying to model a multistorey building.
> Each ceiling has pipes embedded in the concrete for heating and cooling.
> 
> The ceilings at each level are "construction with internal source".
> Floors of the zones above, connected to these ceilings, have to be
> made by the same layer.
> 
> 1
> Is it correct to define the floors' structure either as "construction
> with internal source"?
> Or in this way am I considering twice the effect of the pipes?
> 
> 2
> In "low temp radiant system" I have to write the surface related to
> the system. Do I have to put only the ceilings? Or should I put twice
> the radiant surface (ceiling+floor)?
> 
> Thanks a lot for any help or suggestion.
> 
> JM
> 
> 
> 
> 
> 
> 
> 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.pdf under the
> Documentation link and press the "search" button.
> 
> Yahoo! Groups Links
> 
> 
> 
> 
> 


========================================================
Michael J. Witte, GARD Analytics, Inc.
EnergyPlus Testing and Support      
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 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.pdf under the Documentation link and press the "search" button.
 
Yahoo! Groups Links

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

<*> Your email settings:
    Individual Email | Traditional

<*> To change settings online go to:
    http://groups.yahoo.com/group/EnergyPlus_Support/join
    (Yahoo! ID required)

<*> To change settings via email:
    mailto:EnergyPlus_Support-digest@xxxxxxxxxxxxxxx 
    mailto:EnergyPlus_Support-fullfeatured@xxxxxxxxxxxxxxx

<*> 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/