[EnergyPlus_Support] Re: How to simulate a building having a basement and a crowl space

["drajperry" <drajperry@xxxxxxxxxxxx>]

A related beginner's question. Apologies if this should be a new topic.

In some residential buildings the ventilated crawl space has walls that are above grade and the ground is exposed inside the crawlspace(the "floor" of the crawlspace is bare earth).
The documentation suggests that the basement preprocessor cannot be used for this situation.

How should the ground heat transfer be modeled in this case? Is it safe just to assume the ground temperature will just follow the seasonal variation for the locale.

Thanks,
Andrew.


--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "Kruis, Neal" <neal.kruis@...> wrote:
>
> Franck,
> 
> It is not possible to use two instances of the basement preprocessor while using the "GroundHeatTransfer:Control" object. I would suggest using the basement program twice to generate two sets of temperature profiles (one for each the basement and the crawlspace). When calculating the area-to-perimeter ratio, use the perimeter of each space that is adjacent to the exterior (ignore any perimeter shared by the two zones).
> 
> Neal Kruis
> 
> From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of franck_janin
> Sent: Tuesday, July 19, 2011 7:02 AM
> To: EnergyPlus_Support@xxxxxxxxxxxxxxx
> Subject: [EnergyPlus_Support] How to simulate a building having a basement and a crowl space
> 
> 
> 
> Hello,
> 
> I have a building, floor of 180 m², and under it,
> - a ceilar 50m² (2.5 meter height, closed, and slightly ventilated, for wine and potatoes)
> - a crawl space 130 m² (0.8 meter heigh, ventilated).
> 
> I planned to use the Basement program, but is it possible to use 2 instances ? One for ceilar, one for the crawl ?
> 
> I'm not using slab, because it will not give good results, as the crawl is ventilated.
> 
> Any idea ?
> Best regards,
> 
> Franck Janin
>




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