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Re: [EnergyPlus_Support] Air Layering / internal gains surface temp

1) I would suggest reviewing the "Room Air Models" section of the Intput Output 
Reference.  Depending on the type of HVAC system you are modeling, one of these 
options may be appropriate.  

2) This cannot be done directly.  Internal gains objects, such as ELECTRIC 
EQUIPMENT allow the user to specify a fraction of the energy input which 
becomes a radiant thermal gain to the zone, but there are no temperatures or 
spatial geometry associated with these.  The only way to control a surface 
temperature is by using a heat transfer surface with other side coefficients.  
But this would impact both the zone heat balance as well as the thermal comfort 
calculations.  It is not clear to me that you will be able to get the precision 
you require for this situation using EnergyPlus.

Mike


On 6 Nov 2007 at 10:03, Florian Stift wrote:

> I have two questions regarding the modelling process of a big 
> production hall.
> 
> 1) How do I model or define different air layers within the zone and 
> furthermore define the rate of air and moisture exchange between them.
> 
> 2) There are many machines with high electricity consumption in this 
> hall. As the comfort criterias have to be very precise, the surface 
> temperatures of those machines are very important for my simulations. 
> How do I model internal gains and define load and surface temperatures 
> for them??


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





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