[Equest-users] loop flow

Verena Kindl kindl at scholze.de
Thu Aug 27 06:32:31 PDT 2009


Thanks it is better but i still have a different flow in the loop and 

CW Loop Pump                     1 PUMP(s)
   Condenser Water Loop                  5194.8  cfm      
   PRIMARY LOOP 


Chiller1 (1StageAbs)            
  ABSOR-1           Chilled Water Loop                    21.000      3347.9       0.004       1.429       0.000
                    Condenser Water Loop                  48.505      5983.5 
                    Hot Water Loop                       -28.479      1422.8               

Do I have to worry about it ? I am pretty sure sth is wrong.

-----Ursprüngliche Nachricht-----
Von: B. Fountain [mailto:bfountain at greensim.com] 
Gesendet: Donnerstag, 27. August 2009 15:16
An: Verena Kindl
Cc: equest-users at lists.onebuilding.org
Betreff: Re: [Equest-users] loop flow

Try setting your loop sizing to primary rather than secondary.  Primary
sizes the loop based on the chiller capacity -- good if your primary
equipment sizing is known.  Secondary sizes the loop based on the coils
attached to the loop -- good if you are autosizing your equipment.  The
default is secondary.



> Hi all,
>
>
>
> As I know the capacity of my chiller, condenser and boiler I try to
> allocate the value in the detailed mode. This is working fine but in the
> PV-A report I can see that for example the chiller has the allocated
> capacity but the flow of the chilled water loop and the flow through the
> chiller is different. How can this happen ? I mean I have a single
> system pump it is one loop the chiller is directly connected to the
> chilled water loop ( mass conservation ? ). When I want to allocate a
> capacity to my condenser I always get the error message
>
>
>
> ***ERROR****************************************************************
> *******
>
>              Pump: CW Loop Pump                     has zero design
> flow.  If attached to
>
>              a DHW loop, make sure the recirculation flow is
>
>              nonzero.
>
>
> But I connected the loop to the chiller and I put a temperature
> difference, there should be a flow ? I attach also a screen shot from my
> water side set up I hope someone can help me.
>
> Thanks a lot.
>
> Verena
>
>
>
>
>
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