Energyplus chiller curve dataset bug

asked 2025-10-28 13:45:11 -0500

RyanStochastic's avatar

updated 2025-10-29 12:55:05 -0500

Hello, I noticed what looks like an issue with the chillers.idf dataset that ships with EnergyPlus. Specifically, the Chiller:Electric:ReformulatedEIR objects should have a "curve type" input in field 10, but in both the input dataset and in the example in the documentation, that "curve type" appears in field 11:

The curve type input (which is in the 11th slot, and should be in the 10th slot) is:

LeavingCondenserWaterTemperature !- Electric Input to Cooling Output Ratio Function of Part Load Ratio Curve Type

The relevant example in docs is roughly here:

https://bigladdersoftware.com/epx/doc...

I'm leaving the note here in hopes that someone with the credentials to do so can log the bug on the Energyplus github site or otherwise fix it. I tried but don't see any "new issue" "new pull request" or other buttons that I can click to submit the PR and bugfix myself.

The first occurrence of the issue in the input dataset is here: https://github.com/NREL/EnergyPlus/bl...

This could also just be a bug in the documentation and not the example or datasets file.

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Comments

This may also just be a bug in the documentation, which lists the fields in a different order than what is provided in the example and datasets file.

RyanStochastic's avatar RyanStochastic  ( 2025-10-29 12:54:22 -0500 )edit

The Energy+.idd file should be the source of truth. If you want to contribute to EnergyPlus, see the contribution policy. Once you agree to it, I think you just need to fork the GitHub repo, make the change in a branch on your fork, and then you can open a pull request.

shorowit's avatar shorowit  ( 2025-10-29 17:12:06 -0500 )edit

Alternatively, you can report a bug at https://github.com/NREL/EnergyPlus/is... to have an EnergyPlus developer work on it (though someone may not work on it anytime soon).

shorowit's avatar shorowit  ( 2025-10-29 17:16:54 -0500 )edit