How to add a "new output" in E+ (idf editor)

asked 2019-07-08 09:53:38 -0600

Mohammad

340 ●3 ●8 https://scholar.google...

updated 2019-07-24 09:55:09 -0600

__AmirRoth__

4446 ●5 ●17 http://bleedinggreenna...

Hi. Actually, I'm struggling in testing different damper positions, when that damper is not listed as an output in the idf editor class list. Since, I was wondering if anyone can assist and let me know in details how to have that option listed in the idf file class list, in order to be able to check the damper position on heating/cooling load summary. To be more clear, I already added the following from rdd and pasted into idf file:

HVAC,Average,Zone Air Terminal Cold Supply Duct Damper Position [];

But it resulted in server error! Any ideas? Thanks,

Comments

Have you run a simulation on your file yet? If not run a simulation and see if the output variable appears in the your class list.

JasonGlazer ( 2019-07-09 07:17:32 -0600 )edit

Yes, I did. That output variable is not listed there. This is why I'm wondering if you can help me to figure it out how to have that variable showed up in the class list. Thanks!

Mohammad ( 2019-07-09 17:16:04 -0600 )edit

please include the text of the error you are getting

mdahlhausen ( 2019-07-11 12:49:41 -0600 )edit

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answered 2020-07-30 11:27:18 -0600

Aaron Boranian

14250 ●86 ●24 http://bigladdersoftware.com/

It looks like you are creating the RDD with a "Regular" syntax instead of "IDF" syntax. The text format you've pasted isn't what EnergyPlus requires to define an object (start with object class, end with semicolon ";", etc.). This is likely the cause of your severe error stopping the simulation, which prevents EnergyPlus from generating an updated RDD file.

I would recommend trying to change the Output:VariableDictionary object like below:

Output:VariableDictionary,
  IDF;                                      !- Key Field (Desired RDD Format)

If you save the IDF and run future simulations, you can directly copy Output:Variable lines from the RDD and paste them into the IDF without reformatting. Saving and simulating again will add these new output variables to the ESO and CSV output files.

For the specific Zone Air Terminal Cold Supply Duct Damper Position output variable that you're interested in, EnergyPlus can only generate that if you have the dual duct VAV air terminal object type or dual duct CAV air terminal object type defined in the IDF.