Re: [EnergyPlus_Support] ground-coupled heat transfer

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

Regarding ground-coupled heat transfer:

In the Auxiliary Programs document, there is a section on Ground Heat 
Transfer which describes how to use the ground temperature 
preprocessor which is provided with EnergyPlus.  It is recommended 
that you do not add any soil or ficititious layers to your slab or 
basement wall constructions.  Use the ground temperature preprocessor 
to determine the monthly ground temperatures which are the 
temperatures at the outside face of ground-coupled surfaces.  

Do not use the "ground temperatures" which are listed in the weather 
files, because these are thermally undisturbed ground temperatures 
that one would find in an open field.  The temperatures beneath a 
conditioned building are quite different.

Mike Witte


On 18 Mar 2003, at 21:40, zhaicq98 wrote:

> Hi,
> 
> I am wondering if the simulation of basement and slab-on-ground floor
> in EnergyPlus is the same as that in DOE2. Do I need to add soil and
> fictitious insulation layer to the below grade wall and slab-on-
> ground floor construction in EnergyPlus simulation as what is done in
> DOE2? 
> 
> Another problem I encountered is when I tried to simulate a glass
> curtain wall, I got an error message which said sunlit area too large.
> I had a wall which was 14m high, and I made a large window (13.8m
> high) on it. I tried to make the window a little smaller (12.5m high)
> and I also tried to split the large window into three small ones, but
> in both cases I still got this error message. 
> 
> Can anyone give me some hints on these two questions?
> 
> Thank you,
> Chaoqin
> 
> 
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