[TRNSYS-users] Type 39 Variable Volume Tank Average vs Final Step

[David BRADLEY]

Amir,

   Almost all of TRNSYS's outputs are averages over a timestep. Without 
modifying the Type39 code I cannot think of a way to get the end of 
timestep volume. Would it be feasible to shorten the time step? That way 
presumably the difference between the average value and the end value 
would be reduced.

kind regards,

  David



On 10/31/2017 22:32, Amir Nashed via TRNSYS-users wrote:
> Dear TRNSYS Users
>
> I noticed today while i was trying to match my manual calculation with 
> that of Type 39 (Variable Volume Tank) for the tank volume that they 
> do not match.
>
> The reason for such discrepancy, i noticed, is because the volume 
> calculated by Type 39 is the average at a certain time step rather 
> than at the final step.
>
> My question is, is there a way Type 39 can output the volume at the 
> final step instead of average value?
>
> The issue is that in my model there are few parameters that are 
> manually calculated and they are a function of the tank volume
>
> Thank you
>
> Regards,
>
> *Amir Nashed
> */Research Associate, /UNSW Mechanical and Manufacturing Engineering
>
> UNSW AUSTRALIA
>
> UNSW SYDNEY NSW 2052 AUSTRALIA
>
> *T:*+61 (4) 0597 9282
> *E:* a.nashed at unsw.edu.au <mailto:a.nashed at unsw.edu.au>
> *W:* engineering.unsw.edu.au <http://www.engineering.unsw.edu.au/>
> *FB:*facebook.com/unswfacultyofengineering 
> <http://www.facebook.com/unswfacultyofengineering>
>
> CRICOS Provider Code 00098G
>
>  shed
>
>
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-- 
***************************
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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