[TRNSYS-users] Floor heating in a freezer

[David BRADLEY]

I suspect that you're going to have some trouble with the EMPA model. It 
has some restrictions on the ratio of the center to center pipe distance 
to the floor thickness. Also, that thickness of concrete might give 
TRNBuild a hard time in determining the transfer function coefficients. 
I realize you said you do not have Type1267 but it would allow you to 
define such an arrangement. You'd define a thin top layer for the floor 
in 56 as a BOUNDARY and then you'd define the concrete that makes up the 
rest of the floor as a material in Type1267. You can then tell it how 
the pipes run through the concrete.

best,

  David


On 03/26/2021 16:01, leen peeters via TRNSYS-users wrote:
> Hi all,
>
> I need to model a freezer (-16 to -22 degrees Celcius), with floor 
> heating at pipe-to-pipe distances of 60 cm. Floor is composed of 
> (bottom to top) 25 cm concrete with the floor heating, 20 cm of 
> insulation on top of that and 10 cm of concrete on top of the insulation.
> Is the EMPA model embedded in type 56 suited for this?
>
> Another case is simply the floor heating concrete layer, and no layers 
> on top. Some question here but with distances between pipes equaling 
> 50 cm.
>
> Thanks
> Leen
>
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-- 
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
3 North Pinckney Street - suite 202
Madison, WI  53703 USA

P:+1.608.274.2577
d.bradley at tess-inc.com

http://www.tess-inc.com
http://www.trnsys.com

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