[TRNSYS-users] Active Layers: Screed underfloor heating

[David Bradley]

Paul,
 You're on the correct track. Specify a massive layer for the half of 
the screed that is above the active layer. Next, define and add the 
active layer. As soon as you do, a massive layer equal in thickness to 
your first one will be created below the active layer. I wasn't aware of 
the need to subtract out the thickness of the pipes from the massive layer.
Best,
 David


PAUL COALES wrote:
> I am creating a new "Wall Type" for an underfloor heating system.  The 
> real system consists of 20mm pipes embedded in 75mm of sand/cement screed.
>
> How do I represent this as massive and active layers?  My 
> understanding from the Type56 documentation is that I start with a 
> massive layer for the screed.  This should have a depth of the real 
> screed (75mm) minus the radius of the radient pipes ( 20mm/2 = 10mm) 
> This would give me a 65mm screed layer.  I would then define the 
> active layer which defines the pipe work.  Is this correct?
>
> Thanks
> Paul
>
> ------------------------------------------------------------------------
>
> _______________________________________________
> TRNSYS-users mailing list
> TRNSYS-users at cae.wisc.edu
> https://www-old.cae.wisc.edu/mailman/listinfo/trnsys-users
>   

-- 
***********************************************************************
Thermal Energy System Specialists (TESS), LLC 
David BRADLEY                      22 N. Carroll Street - Suite 370 
Partner                            Madison, WI 53703 
                                   USA
P: +1.608.274.2577 
F: +1.608.278.1475
E-mail: bradley at tess-inc.com 
Web Pages:  http://www.tess-inc.com    and      http://www.trnsys.com

***********************************************************************

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/trnsys-users-onebuilding.org/attachments/20091112/7c5ebccf/attachment-0001.htm>