[TRNSYS-users] Boundary wall

[David BRADLEY]

Ayman,
   I am not sure that I follow quite what you are doing. If your floor 
is defined as a BOUNDARY and the back side temperature is set to 
identical then that defines an air temperature on the other side of the 
floor as being identical to the air temperature of your zone. You can't 
then define the back side temperature as a ground temperature; that 
would doubly define the temperature on the other side of the floor.

Best,
  David

On 8/5/2011 09:50, Ayman Sarwa wrote:
> I am simulating single zone by Trnbuild and Trnsys 17, I define the 
> floor as *boundary *and select boundary as *identical *when I read 
>  the energy from inside surf. of floor conv.  to air and longwave 
> radiation to other surfaces = NTYPE19 the QCOMI of floor, and Temp. of 
> inside floor, I note that,
> for all cases when I define the ground Temp i.e Input of type 56 by 
> type 77 (ground temp ) or by const value , the QCOMI always keeps +ve 
> while T sur_in < T zone, i.e the energy transfer from air zone to 
> floor  , but QCOMI  must be -ve, *Why *?
> Any one can help me to Know what is happen ?
> thanks
> ------
> Best Regadrs
> Eng. Ayman  Mohamed
>
>
> _______________________________________________
> TRNSYS-users mailing list
> TRNSYS-users at cae.wisc.edu
> https://mailman.cae.wisc.edu/listinfo/trnsys-users

-- 
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
Madison, WI  53703 USA

P:+1.608.274.2577
F:+1.608.278.1475
d.bradley at tess-inc.com

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

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/trnsys-users-onebuilding.org/attachments/20110805/6ae27391/attachment-0001.htm>