Grasshopper

algorithmic modeling for Rhino

00 | Honeybee
01 | Daylight | Material
02 | Daylight | Light Source
03 | Daylight | Recipes
04 | Daylight | Daylight
05 | Energy | Building Program
06 | Energy | Material | Construction
07 | Energy | Schedule
08 | Energy | Set Zone Properties
09 | Energy | HVACSystems
10 | Energy | Energy
11 | THERM
12 | Developers
13 | WIP

Run Energy Simulation

Component Index > Honeybee > 10 | Energy | Energy > Run Energy Simulation

Use this component to export HBZones into an IDF file, and run them through EnergyPlus.
The component outputs the report from the simulation, the file path of the IDF file, and the CSV result file from the EnergyPlus run.

Inputs

NameIDDescriptionType
north_north_Input a vector to be used as a true North direction for the energy simulation or a number between 0 and 360 that represents the degrees off from the y-axis to make North. The default North direction is set to the Y-axis (0 degrees).Goo
_epwFile_epwFileAn .epw file path on your system as a text string.Goo
_analysisPeriod__analysisPeriod_An optional analysis period from the Ladybug_Analysis Period component. If no Analysis period is given, the energy simulation will be run for the enitre year.Goo
++++++++++++++++++++++++++++++...Goo
_energySimPar__energySimPar_Optional Energy Simulation Parameters from the "Honeybee_Energy Simulation Par" component. If no value is connected here, the simulation will run with the following parameters: 1 - 6 timeSteps per hour 2 - A shadow calculation that averages over multiple days (as opposed to running it for each timeStep) 3 - A shadow calculation frequency of 30 (meaning that the shadow calulation is averaged over every 30 days) 4 - A maximum of 3000 points used in the shadow calculation. (This may need to be higher if you have a lot of detailed context geometry) 5 - An colar energy calculation that includes both interior and exterior light reflections. 6 - A simulation including a zone sizing calculation, a system sizing calculation, a plat sizing calculation, and a full run of the energy use ofver the analysis period. The simulation is not run for the sizing period by default. 7 - A system sizing period that runs from the extreme periods of the weather file and not a ddy file. 8 - City terrian.Goo
_HBZones_HBZonesThe HBZones that you wish to write into an IDF and/or run through EnergyPlus. These can be from any of the components that output HBZones.Goo
HBContext_HBContext_Optional HBContext geometry from the "Honeybee_EP Context Surfaces." component or Honeybee PV gen component.Goo
HBGenerators_HBGenerators_Connect the output HBGeneratorSystem from the Honeybee_generationsystem component here to model EnergyPlus Photovoltaic and Wind generator systems in this simulation.Goo
simulationOutputs_simulationOutputs_A list of the outputs that you would like EnergyPlus to write into the result CSV file. This can be any set of any outputs that you would like from EnergyPlus, writen as a list of text that will be written into the IDF. It is recommended that, if you are not expereinced with writing EnergyPlus outputs, you should use the "Honeybee_Write EP Result Parameters" component to request certain types of common outputs. If no value is input here, this component will automatically request outputs of heating, cooling, lighting, and equipment energy use.Goo
++++++++++++++++++++++++++++++Script input +++++++++++++++.Goo
_writeIdf_writeIdfSet to "True" to have the component take your HBZones and other inputs and write them into an IDF file. The file path of the resulting file will appear in the idfFileAddress output of this component. Note that only setting this to "True" and not setting the output below to "True" will not automatically run the IDF through EnergyPlus for you.Goo
runEnergyPlus_runEnergyPlus_Set to "True" to have the component run your IDF through EnergyPlus once it has finished writing it. This will ensure that a CSV result file appears in the resultFileAddress output. Set to 2 if you want the analysis to run in background. This option is useful for parametric runs when you don't want to see command shells.Goo
++++++++++++++++++++++++++++++Script input +++++++++++++++.Goo
_workingDir__workingDir_An optional working directory to a folder on your system, into which your IDF and result files will be written. NOTE THAT DIRECTORIES INPUT HERE SHOULD NOT HAVE ANY SPACES OR UNDERSCORES IN THE FILE PATH.Goo
_idfFileName__idfFileName_Optional text which will be used to name your IDF and result files. Change this to aviod over-writing results of previous energy simulations.Goo
++++++++++++++++++++++++++++++Script input +++++++++++++++.Goo
meshSettings_meshSettings_Optional mesh settings for your geometry from any one of the native Grasshopper mesh setting components. These will be used to change the meshing of curved surfaces before they are run through EnergyPlus (note that meshing of curved surfaces is done since Energyplus is not able to calculate heat flow through non-planar surfaces). Default Grasshopper meshing is used if nothing is input here but you may want to decrease your calculation time by changing it to Coarse or increase your curvature definition (and calculation time) by making it finer.Goo
additionalStrings_additionalStrings_THIS OPTION IS JUST FOR ADVANCED USERS OF ENERGYPLUS. You can input additional text strings here that you would like written into the IDF. The strings input here should be complete EnergyPlus objects that are correctly formatted. You can input as many objects as you like in a list. This input can be used to write objects into the IDF that are not currently supported by Honeybee.Goo

Outputs

NameIDDescriptionType
outreportCheck here to see a report of the EnergyPlus run, including errors.String
idfFileAddressidfFileAddressThe file path of the IDF file that has been generated on your machine.Goo
htmlReporthtmlReportThe Html file path of the Building Utility Performance Summar. You can review the report by copying the file path, and open it in your web browser.Goo
resultFileAddressresultFileAddressThe file path of the CSV result file that has been generated on your machine. This only happens when you set "runEnergyPlus_" to "True."Goo

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