Re: [EnergyPlus_Support] Chilled beams and Hot water convectors

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

For perimeter hot water convectors, use BASEBOARD HEATER:WATER:CONVECTIVE.  If 
you are using a standard unitary or VAV system, you can specify these as part 
of the COMPACT HVAC:ZONE:* object.

Chilled beams are more difficult.  The LOW TEMP RADIANT SYSTEM is a starting 
point, but it will not produce the same level of convective heat transfer as a 
chilled beam would typically have.  You could increase this by setting a high 
convection coefficient on the low temp radiant heat transfer surface.  If it is 
an active chilled beam with some forced airflow, the induction unit (SINGLE 
DUCT:CONST VOLUME:4 PIPE INDUC) might be more appropriate.  The key difference 
is whether the particular chiled beam configuration you are modeling is 
primarily radiant or convective.

Mike


On 26 Nov 2007 at 19:15, Jun Calixihan wrote:

>  Hello!
> 
> 
> 
> I'm new to EnergyPlus idf file editing.  Is there a way to model chilled
> beams in EnergyPlus?  What E+ objects shall I use?  Shall I use LOW TEMP
> RADIANT SYSTEM?  Shall I use this also for hot water convectors in building
> perimeter?  I read the documentation on this but just want to be sure.
> 
> 
> 
> Thanks very much!
> 
> Jun
> 
> 
> 
> [Non-text portions of this message have been removed]
> 
> 
> 
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> 
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> 
> Attachments are not allowed -- please post any files to the appropriate folder
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> 
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> Documentation link and press the "search" button.
> 
> Yahoo! Groups Links
> 
> 
> 
> 
> 


========================================================
Michael J. Witte, GARD Analytics, Inc.
EnergyPlus Testing and Support      
EnergyPlus-Support@xxxxxxxx





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