[borisd]

Hi!

I've created jEPlus project for TRNSYS input file but I'm unable to find how to define objective function and input .csv file for TRNSYS project. Only .rvi .rvx files are mentioned for EnergyPlus projects.

Any help?

[Yi]

Good question! Since the TRNSYS project GUI has not been updated to let you select and edit a RVX file, you will have to do some manual hacking. First, prepare a RVX file named my.rvx containing only the UserVars, Constraints and Objectives sections like this one here:

{
"userVars" : [
{
"identifier" : "v0",
"formula" : "c0",
"caption" : "CO2 Emmission [kg]",
"report" : true
}
],

"constraints" : [
{
"identifier" : "s1",
"formula" : "c1/1000",
"caption" : "Chiller Capacity [kW]",
"scaling" : true,
"lb" : 0,
"ub" : 200,
"min" : 0,
"max" : 300,
"weight" : 1.0
}
],

"objectives" : [
{
"identifier" : "t1",
"formula" : "v0/1000",
"caption" : "CO2 [ton]",
"scaling" : false,
"min" : 0,
"max" : 100000,
"weight" : 1.0
}
]
}

And then, edit the project (.jep) file to add three lines:

<void property="RVIFile">
<string>my.rvx</string>
</void>

after

<void property="DCKTemplate">
<string>?????????.dck</string>
</void>

Save the project and load it in jEPlus. If running the simulations will give you output in the AllDerivedResults.csv, then the project should work with jEPlus+EA.

Yi

[borisd]

Many thanks Dr. Zhang, it works as you described.

[Yi]

Excellent! You are welcome.

Yi