RE: [EnergyPlus_Support] Re: Thoughts for the Energy Modeling Community

[RRaustad@xxxxxxxxxxxx]

It would be nice to have a defect file that shows this. I know you have
provided many examples, but those get lost in all the tickets. Maybe E+
doesn't correctly model DX cooling coils with high OA fractions (not
sure why this would happen, we've had this discussion), or maybe the
inputs are causing problems (i.e., sizing objects). Not a defect file
with 100 zones, but one that is easy to run, report, and diagnose would
be ideal (5 zones?).

Lesson #2:  EnergyPlus does not like to autosize systems with large
outdoor air loads

EnergyPlus imposed its built-in flow / capacity limits and it reduced
the coil size for several zones in order to meet the limits. Those
down-sized DX coils failed to adequately cool the zones they served ?
and unmet loads resulted.



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