[TRNSYS-users] double active layer

David Bradley bradley at tess-inc.com
Thu Jun 8 07:29:26 PDT 2006


Arie,
   I had to do something similar because I had a zone with an active layer 
that sits on top of two zones below. That meant that I have two "floors" in 
my zone above, one adjacent to each of the zones below. I defined an active 
layer for each of the two floors and added Type56 INPUTS for the inlet mass 
flow rate and temperature to each of the two floors and added Type56 
OUTPUTS for the outlet temperature. In the .dck, I have a flow splitter 
that divides my full mass flow appropriately between the two floors and on 
the output side, I have a flow mixer. I am sure that this does not 
perfectly model the reality of the floor in the actual building since as 
far as the simulation is concerned, there is no heat transferred directly 
between the two floor slabs and in reality of course there would be. 
However, that solution has given me no problems as far as the simulation is 
concerned and all my energy flows look reasonable so I think it is a decent 
approximation. If anyone thinks otherwise, I would be happy to know.
Kind regards,
  David


At 08:03 6/6/2006, Arie Kalkman wrote:
>Dear TRNSYS users,
>
>I would like to model a floor with two active layers, one at the front and 
>the other at the back of a concrete slab.
>Since TRNSYS does not support two active layers in one floor, I guess that 
>I have to slice the floor in two different slabs and connect them to each 
>other somehow.
>Does anyone have experience/ suggestions with this situation?
>
>Thanks in advance for any help,
>
>Regards, Arie
>
>
>
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>TRNSYS-users at engr.wisc.edu
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Thermal Energy System Specialists (TESS), LLC
David BRADLEY                           2916 Marketplace Drive - Suite 104
Partner                                        Madison, WI 53719
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E-mail: bradley at tess-inc.com
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