Running EnergyPlus directly

Here we demonstrate various ways of interacting with EnergyPlus models directly.

import os

from besos import eppy_funcs as ef
from besos.evaluator import EvaluatorEP
from besos.problem import EPProblem

Using an Evaluator with no Parameters

Here we run in.idf and sum the Meter Electricity:Facility, but don’t vary any parameters.

building = ef.get_building("in.idf")
evaluator = EvaluatorEP(EPProblem(outputs=["Electricity:Facility"]), building)
evaluator([])

(6029872434.744861,)

Using EPPy

BESOS building objects are actually EPPy building objects. Eppy’s documentation describes how to explore and modify the IDF object directly. Here we list the materials present in in.idf, then run it.

building = ef.get_building("in.idf")
building.savecopy("in_copy.idf")
print([materials.Name for materials in building.idfobjects["MATERIAL"]])
building.epw = "./weatherfile.epw"
try:
    building.run(output_directory="output_folder")
finally:
    os.rename("in_copy.idf", "in.idf")

['1/2IN Gypsum', '1IN Stucco', '8IN Concrete HW', 'F08 Metal surface', 'F16 Acoustic tile', 'G01a 19mm gypsum board', 'G05 25mm wood', 'I01 25mm insulation board', 'M11 100mm lightweight concrete', 'MAT-CC05 4 HW CONCRETE', 'Metal Decking', 'Roof Insulation [18]', 'Roof Membrane', 'Wall Insulation [31]']

/usr/local/EnergyPlus-9-0-1/energyplus --weather /home/user/repos/workingBesos/besos/docs/besos-examples/besos/examples/EnergyPlus/weatherfile.epw --output-directory /home/user/repos/workingBesos/besos/docs/besos-examples/besos/examples/EnergyPlus/output_folder --idd /usr/local/EnergyPlus-9-0-1/Energy+.idd /home/user/repos/workingBesos/besos/docs/besos-examples/besos/examples/EnergyPlus/in.idf

Using a bash cell to execute it from the command line

Run energyplus -h for more commands.

!energyplus -w weatherfile.epw in.idf

EnergyPlus Starting
EnergyPlus, Version 9.3.0-baff08990c, YMD=2021.02.09 22:57
**FATAL:Errors occurred on processing input file. Preceding condition(s) cause termination.
EnergyPlus Run Time=00hr 00min  0.19sec
Program terminated: EnergyPlus Terminated--Error(s) Detected.