Hello,
I am currently using MASControl3 and eQuest 3.65 (October 2018 release) and I would like to define my own performance curves for building HVAC systems. I am confused by the changes to the .inp files in the new release. In previous versions of eQuest, I was able to specify Global Parameters and automatically update the HVAC system's performance curve coefficients (see DXAC_INP_Old, attached). Now, however, it seems that performance curves are called from a library within the eQuest data (see DXAC_INP_New, attached). So far, I have been unable to find where that library is.
I would like to locate the library and write a python script to update the performance curve coefficients on multiple model runs. Does anyone know where I might find this data?
Thank you,
Garrett Hedberg | Engineer I | ghedberg at energy-solution.com
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You could define a bunch of curves with different names in the .inp file. Then use a Global Parameter and a Keyword expression to switch the curve on each parametric run. Use a switch statement keyword expression to change the curve for each parametric run.
Christopher R Jones, P.Eng.
T+ 1 416-644-0252
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Hey Christopher,
Yeah, ideally that's would I would like to do. I'm unsure how to define the curves though. It looks like the .inp references a library item, but I've dug through the .dat files and can't find the data. If I could find the syntax I could script a "New Curve 1, 2, etc," and reference it in the .inp like you said.
As an example, here's a picture of how a packaged units EIR as a function of PLR is defined:
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Do you have any idea where the "PSZ65to135_CEIR_fPLR data it?
Thanks,
Garrett Hedberg | 714-787-1089
Hi Grant,
Check the USRLib.dat file in C:\DEER2020\MASControl3\DOE2\exe\DOE23 (assuming that's where you installed MASControl3).
Phil Jordan
Alternatively/additionally...
Can anyone expand on what conditions enable this little "Save to Library..." option I recently noticed on right clicking around any of the component trees?
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~Nick
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Nick Caton, P.E., BEMP
Senior Energy Engineer
Regional Energy Engineering Manager
Energy and Sustainability Services
Energy Performance Contracting
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