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Re: [EnergyPlus_Support] Thermal Zone Geometry


 I generally recommend using the centerline dimensions so that the total 
thermal mass is correct.

Mike


On 14 Dec 2004, at 11:59, Rahul Chillar wrote:

> 
> hello,
> 
> if you need to capture the effect of zone volume better you should use inside
> dimensions, if you need to capture outside enviornment effect like solar , you
> should use outside dimensions. E+ does not have wall thickness parameter and it
> will not subract the wall thickness from the zone dimension. you could take an
> average of the two possibly. 
> 
> I also think that if you have 2 meter thick walls you could have conduction heat
> transfer function problems in simulation, although that would depend on wall
> thermal properties too.
> 
> thanks
> Rahul Chillar 
> 
> ccastano@xxxxxxxxx wrote:
> 
> 
> 
> 
> Hi,
> 
> We are working with an example of a building. We have a doubt with the
> geometry of the zone. We do not know if the X,Y,Z coordinates of each wall
> are referred to internal or external side of the surface. In our case we
> have a wall of 2 meters of thickness and we do not know how to define the
> coordinates, referring them to the external or internal side.
> 
> 
> 
> Best regards,
> Cristina.
> 
> 
> 
> 
> 
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