Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
In EnergyPlus the end use category InteriorEquipment is an Output:Meter object that combines either ElectricEquipment or GasEquipment objects from all zones.
In OpenStudio these are found in the Loads tab under Electric Equipment Definitions and Gas Equipment Definitions. These internal gains are essentially rolled up to the building level and reported as monthly totals in the Results Summary tab bar chart.
Assuming your building type is not dominated by internal equipment gains, a couple questions I would have are:
Does the interior equipment end use seem too large in absolute terms? If so look at the values used in the model for the Electric Equipment Definitions.
Does the interior equipment end use seem too large in relative terms? If so, then your model may not be well tuned (i.e. have unreasonably high unmet hours, say >300 heating or cooling hours not met by the HVAC system). If so then take a look at the HVAC system parameters.
For reference, here's the output from a primary school:
