OpenStudio-HPXML v1.0.0
OpenStudio-HPXML version 1.0.0 has been released. Two packages are available, a minimal zip with a handful of weather files and full zip with all US TMY3 weather files.
The OpenStudio-HPXML workflow uses HPXML building description files to run residential simulations on the Department of Energy's OpenStudio/EnergyPlus building simulation platform.
OpenStudio-HPXML v1.0.0 uses OpenStudio v3.1.0, EnergyPlus v9.4.0, and a proposed HPXML v3.1.
Please visit the OpenStudio-HPXML v1.0.0 documentation for instructions on how to get started, how to generate an appropriate HPXML file, etc.
New Features
- Updates to OpenStudio 3.1.0/EnergyPlus 9.4.0.
- Breaking change: Deprecates
WeatherStation/WMO
HPXML input, useWeatherStation/extension/EPWFilePath
instead; also removesweather_dir
argument from HPXMLtoOpenStudio measure. - Implements water heater Uniform Energy Factor (UEF) model; replaces RESNET UEF->EF regression. Breaking change:
FirstHourRating
is now a required input for storage water heaters when UEF is provided. - Adds optional HPXML fan power inputs for most HVAC system types. Breaking change: Removes ElectricAuxiliaryEnergy input for non-boiler heating systems.
- Uses air-source heat pump cooling performance curves for central air conditioners.
- Updates rated fan power assumption for mini-split heat pump models.
- Allows coal fuel type for non-boiler heating systems.
- Accommodates common walls adjacent to unconditioned space by using HPXML surfaces where InteriorAdjacentTo == ExteriorAdjacentTo.
- Adds optional HPXML inputs to define whether a clothes dryer is vented and its ventilation rate.
- Adds optional HPXML input for
SimulationControl/CalendarYear
for TMY weather files. - Schematron validation improvements.
- Adds some HPXML XSD schema validation and additional error-checking.
- Various small updates to ASHRAE 140 test files.
- Reduces number of EnergyPlus output files produced by using new OutputControlFiles object.
- Release packages now include ASHRAE 140 test files/results.
Bugfixes
- EnergyPlus 9.4.0 fix for negative window solar absorptances at certain hours.
- Fixes airflow timeseries outputs to be averaged instead of summed.
- Updates HVAC sizing methodology for slab-on-grade foundation types.
- Fixes an error that could prevent schematron validation errors from being produced.
- Skips weather caching if filesystem is read only.