[TRNSYS-users] problem with control using type 2d

[David BRADLEY]

Talib,
   Type2 models a differential temperature controller. It's control 
decision is based on the difference between two values no matter what 
the magnitudes of those values are. A typical thermostat makes a control 
decision by comparing the magnitude of two values (not just the 
difference). While you can use a type2 to model a thermostat, I think it 
would be easier in your case to use Type108 (Controllers: 5-Stage Room 
thermostat.)
Regards,
  David


On 12/7/2012 05:36, Talib Ahmadu wrote:
> Dear all,
> I want to create a control for a multizone building cooling model 
> using type 2d. I have used an absorption chiller, type 107. I want the 
> chiller on when the temperature in the zones exceed 24C and off when 
> the temperature falls below 19C. These are my inputs.
> Upper input value= Tzone
> Lower input value=0
> Upper dead band=24
> Lower bead band=19
> I tried this for a single zone but it didnt seem to work well. I have 
> 9 zones in the building, my problem is how to connect all zone 
> temperatures to Upper input value.
> Please i need to know if this strategy is correct and how i can 
> connect all zone temperatures. Suggestions will be appreciated. Thanks
> Talib.
>
>
>
> _______________________________________________
> 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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