How to implement Fan:SystemModel with Discrete speeds
EnergyPlus crashes when I try to add discrete speeds to the Fan:SystemModel. These are my inputs for the discrete fan speeds:
...
0.3832213238784, !- Design Maximum Air Flow Rate {m3/s}
Discrete, !- Speed Control Method
0.783251231527094, !- Electric Power Minimum Flow Rate Fraction
250, !- Design Pressure Rise {Pa}
0.9, !- Motor Efficiency
1, !- Motor In Air Stream Fraction
133.333333333333, !- Design Electric Power Consumption {W}
PowerPerFlow, !- Design Power Sizing Method
347.927750950626, !- Electric Power Per Unit Flow Rate {W/(m3/s)}
1.66667, !- Electric Power Per Unit Flow Rate Per Unit Pressure {W/((m3/s)-Pa)}
0.7, !- Fan Total Efficiency
Fan Curve, !- Electric Power Function of Flow Fraction Curve Name
, !- Night Ventilation Mode Pressure Rise {Pa}
, !- Night Ventilation Mode Flow Fraction
, !- Motor Loss Zone Name
0.5, !- Motor Loss Radiative Fraction
General, !- End-Use Subcategory
4, !- Number of Speeds
0.78, !- Speed 1 Flow Fraction
, !- Speed 1 Electric Power Fraction
0.87, !- Speed 2 Flow Fraction
, !- Speed 2 Electric Power Fraction
0.96, !- Speed 3 Flow Fraction
, !- Speed 3 Electric Power Fraction
1; !- Speed n Flow Fraction
This idf runs successfully without the discrete speeds set: https://www.dropbox.com/t/xVykG6F5PnP...
This idf crashes: https://www.dropbox.com/t/mZ59GtQHkCV...
What am I doing wrong?
EnergyPlus should never crash. You should file a bug report at https://github.com/NREL/EnergyPlus/is... and link to this post.