[TRNSYS-users] Question active layer in type 56

[David BRADLEY]

Richard,
   The active layer model does handle no-flow. The air temperature may 
not be the best variable to watch to determine whether the system is 
operating properly; radiant floor systems often try to keep people 
comfortable by keeping the zone surfaces either cool or warm and letting 
the air temperature float through a wider range than is generally 
acceptable in purely air-based systems. You might look instead at the 
inside surface temperature of your radiant slab. I would think that you 
would see a slower response to turning the GSHP on and off there.
Best,
  David


On 5/15/2012 01:48, Richard Thygesen wrote:
>
> Hi.
>
> Have any of you out there had problem with controlling an active layer 
> in type 56?
>
> I have connected  the active layer to a GSHP system but the indoor 
> temperature rise sharply when the controller turns the GSHP off and 
> return to a "normal" 20°C when the GSHP starts again. Is the active 
> layer incapable of handle a no flow situation?
>
> Does anyone know what the problem might be?
>
> Best regards
>
> *Richard Thygesen*
>
> Doctoral student
>
> *Mälardalen University*
>
> School of Sustainable Development of Society and Technology
>
> Phone: +46(0)21-10 31 82
>
> _richard.thygesen at mdh.se <mailto:richard.thygesen at mdh.se>_
>
> www.mdh.se <http://www.mdh.se/>
>
> *Beskrivning: Beskrivning: mälardalens högskola*
>
>
>
> _______________________________________________
> 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

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