Question-and-Answer Resource for the Building Energy Modeling Community
Get started with the Help page
Ask Your Question
1

Missing Facility Energy

asked 2019-12-17 20:49:49 -0600

mldichter's avatar

I outputted all the energy use [J] hourly of everything in the IDF that would contribute to the Gas:Facility [J] (Hourly) and Electricity:Facility [J] (Hourly) output meters, but I'm still missing between 5%-10% of the total energy use depending on the hour. Here is a google drive link to the file and my spreadsheet.

image description

These are the output variables I summed.

Output:Variable,
    *,                       !- Key Value
    Lights Electric Energy,  !- Variable Name
    Hourly;                  !- Reporting Frequency

Output:Variable,
    *,                       !- Key Value
    Electric Equipment Electric Energy,  !- Variable Name
    Hourly;                  !- Reporting Frequency

Output:Variable,
    *,                       !- Key Value
    Exterior Lights Electric Energy,  !- Variable Name
    Hourly;                  !- Reporting Frequency

Output:Variable,
    *,                       !- Key Value
    Fan Electric Energy,     !- Variable Name
    Hourly;                  !- Reporting Frequency

Output:Variable,
    *,                       !- Key Value
    Cooling Coil Electric Energy,  !- Variable Name
    Hourly;                  !- Reporting Frequency

Output:Variable,
    *,                       !- Key Value
    Water Heater Electric Energy,  !- Variable Name
    Hourly;                  !- Reporting Frequency

Output:Variable,
    *,                       !- Key Value
    Heating Coil Gas Energy, !- Variable Name
    Hourly;                  !- Reporting Frequency

And these all all the objects in my IDF. What am I missing?

VERSION
SIMULATIONCONTROL
BUILDING
SURFACECONVECTIONALGORITHM:INSIDE
SURFACECONVECTIONALGORITHM:OUTSIDE
HEATBALANCEALGORITHM
TIMESTEP
SITE:LOCATION
SIZINGPERIOD:DESIGNDAY
RUNPERIOD
RUNPERIODCONTROL:SPECIALDAYS
RUNPERIODCONTROL:DAYLIGHTSAVINGTIME
SITE:GROUNDTEMPERATURE:BUILDINGSURFACE
SITE:WATERMAINSTEMPERATURE
SCHEDULETYPELIMITS
SCHEDULE:COMPACT
MATERIAL
MATERIAL:NOMASS
WINDOWMATERIAL:GLAZING
WINDOWMATERIAL:GAS
WINDOWMATERIAL:GASMIXTURE
CONSTRUCTION
GLOBALGEOMETRYRULES
ZONE
ZONELIST
ZONEGROUP
BUILDINGSURFACE:DETAILED
FENESTRATIONSURFACE:DETAILED
INTERNALMASS
PEOPLE
################################# LIGHTS
################################# ELECTRICEQUIPMENT
ZONEINFILTRATION:DESIGNFLOWRATE
ZONEVENTILATION:WINDANDSTACKOPENAREA
################################# EXTERIOR:LIGHTS
DESIGNSPECIFICATION:OUTDOORAIR
SIZING:PARAMETERS
SIZING:ZONE
SIZING:SYSTEM
ZONECONTROL:THERMOSTAT
THERMOSTATSETPOINT:DUALSETPOINT
AIRTERMINAL:SINGLEDUCT:UNCONTROLLED
ZONEHVAC:EQUIPMENTLIST
ZONEHVAC:EQUIPMENTCONNECTIONS
################################# FAN:ONOFF
################################# COIL:COOLING:DX:SINGLESPEED
################################# COIL:HEATING:FUEL
AIRLOOPHVAC:UNITARY:FURNACE:HEATCOOL
CONTROLLER:OUTDOORAIR
AIRLOOPHVAC:CONTROLLERLIST
AIRLOOPHVAC
AIRLOOPHVAC:OUTDOORAIRSYSTEM:EQUIPMENTLIST
AIRLOOPHVAC:OUTDOORAIRSYSTEM
OUTDOORAIR:MIXER
AIRLOOPHVAC:ZONESPLITTER
AIRLOOPHVAC:SUPPLYPATH
AIRLOOPHVAC:ZONEMIXER
AIRLOOPHVAC:RETURNPATH
BRANCH
BRANCHLIST
OUTDOORAIR:NODE
OUTDOORAIR:NODELIST
################################# WATERHEATER:MIXED
ENERGYMANAGEMENTSYSTEM:SENSOR
ENERGYMANAGEMENTSYSTEM:ACTUATOR
ENERGYMANAGEMENTSYSTEM:PROGRAMCALLINGMANAGER
ENERGYMANAGEMENTSYSTEM:PROGRAM
AVAILABILITYMANAGER:SCHEDULED
AVAILABILITYMANAGERASSIGNMENTLIST
SETPOINTMANAGER:SINGLEZONE:REHEAT
SETPOINTMANAGER:MIXEDAIR
CURVE:QUADRATIC
CURVE:BIQUADRATIC
OUTPUT:VARIABLEDICTIONARY
OUTPUT:SURFACES:LIST
OUTPUT:SURFACES:DRAWING
OUTPUT:TABLE:SUMMARYREPORTS
OUTPUTCONTROL:TABLE:STYLE
OUTPUT:VARIABLE
OUTPUT:METER
edit retag flag offensive close merge delete

1 Answer

Sort by ยป oldest newest most voted
1

answered 2019-12-18 08:25:35 -0600

Open up the meter details output file (*.mtd) file that is produced after running the simulation and search for, e.g., "For Meter=Electricity:Facility [J], ResourceType=Electricity, contents are:". This will tell you all of the output variables that contribute to the meter.

edit flag offensive delete link more

Comments

Found it! There is a new ZoneGroup object which has a Zone List Multiplier of 2. The energy use output variables do not account for any multipliers applied to individual objects, which makes total sense. All energy is accounted for now. Thank you.

mldichter's avatar mldichter  ( 2019-12-18 10:11:57 -0600 )edit

Your Answer

Please start posting anonymously - your entry will be published after you log in or create a new account.

Add Answer

Training Workshops

Careers

Question Tools

1 follower

Stats

Asked: 2019-12-17 20:49:49 -0600

Seen: 132 times

Last updated: Dec 18 '19