[TRNSYS-users] Trnedit and parametric runs, trnsys output modification

[David BRADLEY]

Carlos,
   You can do this but in a slightly more indirect way. Say that you 
have a 3 node tank and that the temperature of the 3 nodes are given by 
outputs 21, 22, and 23 of UNIT 35. You will need to write an equation 
such as:

EQUATIONS 1
tempToWatch = isRun1*[35,21] + isRun2*[35,22] + isRun3*[35,23]

isRun1, isRun2 and isRun3 are all new variables that will be defined 
both in the input file and in the parametric table. You can write:

CONSTANTS 3
isRun1 = 1
isRun2 = 0
isRun3 = 0

for each run that you make, all three of the constants must be set and 
only one of them should be set to a value of 1; all others should be zero.

Lastly, you will need to go through the deck and replace the text 
[35,21] with the variable tempToWatch.
Kind regards,
  David


On 8/28/2013 05:30, C.ARBOLEDA at sanden-europe.fr wrote:
> hi,
>
> I'm trying to simulate a DHW system, and I would like to make a 
> parametric run using TRNedit.
> In this parametric study, I would like to change the node of my 
> storage tank which is use to regulate my DHW system.
>
> In TRNedit, the TRNSYS outputs are referenced like this: [Unit#, Output#]
> Is it possible to replace the Unit# or the Output# by a constant or an 
> equation?
>
> Example:
>
> TANK: UNIT 35 TYPE 534
>
> [35,21] is the temperature of the 1st node of my tank
>
> I want to replace [35,21] by [35,x], x will vary every new simulation 
> following my parametric table.
>
> I do not undertand very well the properties of the object:  [Unit#, 
> Output#]
>
> If it's not possible is there another solution to this problem?
>
> Thank you in advance for your answer
>
> Carlos Arboleda
>
>
> _______________________________________________
> 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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