[TRNSYS-users] Tank volume optimisation

[Benoît Andlauer <benoit.andlauer@ensmp.fr>]

Dear TRNSys-users,

I would like to model a micro-CHP system including a storage tank component. I use the Type 534 from the TESS Library.
I'm now trying to run an optimization process with TRNOpt, and the tank volume should be one of the optimization variables.
Classically, I would put an equation defining the variable (for ex., Tank_Volume) and link to the component, so that TRNOpt recognises the variable.

However, the tank volume for type 534 has to be defined in an external plug in, so it isn't a regular "input" or "parameter".
I tried to modify the numerical value in the .dat file of the plug in to "Tank_Volume", but TRNSys reported an error.

Has anyone met such a problem in defining the optimisation variables ?

Any help would be gratefully appreciated,
Benoît