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

[David BRADLEY <d.bradley@tess-inc.com>]

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@unsw.edu.au
W:  engineering.unsw.edu.au
FB: facebook.com/unswfacultyofengineering

CRICOS Provider Code 00098G

 shed

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