Skip to content

OpenStudio-ERI v1.9.0

Latest
Latest
Compare
Choose a tag to compare
@shorowit shorowit released this 16 Nov 06:37
v1.9.0
50dc614

OpenStudio-ERI version 1.9.0 has been released. The OpenStudio-ERI workflow calculates an Energy Rating Index (ERI) using the Department of Energy's OpenStudio/EnergyPlus building simulation platform. The open-source workflow is intended to be used by residential software tools that provide a HPXML building description file.

OpenStudio-ERI v1.9.0 uses OpenStudio v3.9.0, EnergyPlus v24.2.0, and HPXML v4.1-rc1. Please visit the OpenStudio-ERI v1.9.0 documentation for instructions on how to get started, how to connect software tools to the workflow, etc. The full set of US TMY3 weather files can be obtained from here.

New Features

  • Updates to OpenStudio 3.9/EnergyPlus 24.2/HPXML v4.1-rc1.
  • Adds 2024 IECC ERI pathway calculation.
  • Breaking change: Renamed Emissions: <EmissionsType>: RESNET: XXX to Emissions: <EmissionsType>: ANSI301: XXX in Annual Home CSV output files.
  • Implements ANSI/RESNET/ICC Standard 301-2022 Addendum E for CFIS systems.
    • ERICalculation/Version and CO2IndexCalculation/Version can now be "2022CE".
    • Breaking change: Removes FanPower/FanPowerDefaulted and VentilationOnlyModeAirflowFraction inputs for CFIS systems.
    • Breaking change: Adds CFISControls/HasOutdoorAirControl and CFISControls/extension/ControlType inputs for CFIS systems.
    • Adds choice of "none" for CFISControls/AdditionalRuntimeOperatingMode input for CFIS systems.
    • Adds optional CFISControls/extension/SupplementalFanRunsWithAirHandlerFan input for CFIS systems.
  • Adds inputs for modeling skylight curbs and/or shafts.
  • Relaxes IECC climate zone requirements.
    • IECC climate zone years other than 2006 are now always optional; for programs that use specific IECC climate zone years (e.g., 2021 for ZERH SF 2.0), that year is used if provided, otherwise the next earliest provided year will be used with the assumption that the climate zone has not changed across the years.
    • See the documentation for more information.
  • Updates HERS Diagnostic Output to v0.3.0.

Bugfixes

  • Adds error-checking for NumberofConditionedFloorsAboveGrade=0, which is not allowed per the documentation.
  • Fixes error if a heating system and a heat pump (that only provides cooling) are attached to the same distribution system.
  • Fixes double counting of battery storage losses in ERI calculation; CO2e Index is unaffected.
  • Misc Manual J design load calculation improvements.
  • Fixes GSHP rated fan/pump powers in net to gross calculations.
Assets 3
Loading