DOE Releases Updates of EnergyPlus and OpenStudio
During the last week of March, DOE—working with a group of national labs and contractors—released regularly scheduled updates of its open-source, cross-platform whole-building energy modeling
tools, the EnergyPlus engine and the OpenStudio software development kit and application.
EnergyPlus V8.5 includes the following new features:
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Improved sizing for pumps and reheat coils
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Improved economizer integration for multi-speed coils
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New ASHRAE single-zone VAV fan-control
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Electric storage controls
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Significant speedups for daylighting calculations in large models
During the 2015-2016 fiscal year, the EnergyPlus development team is focusing on improving robustness and execution speed and on internal code restructuring to help with maintenance, testing,
and future performance improvements. EnergyPlus V8.5 includes fixes for over 90 bugs and issues. With V8.5, the EnergyPlus open-source licensing scheme has been simplified. EnergyPlus is now distributed under the standard BSD-3 license.
Whereas EnergyPlus updates are released twice a year, OpenStudio updates are released quarterly.
OpenStudio V1.11 new features include:
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Application support for dual-duct system layout
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Application support for construction inheritance
These complement features were introduced in V1.10, released in December 2015:
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Compatibility with SketchUp 2016
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Support for additional HVAC equipment types and systems
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Application support for grid view
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Improved Radiance integration
OpenStudio V1.11 also supports EnergyPlus V8.5, marking the first time OpenStudio has supported the EnergyPlus version upon the latter’s release. DOE plans to continue this practice into the
future.
EnergyPlus and OpenStudio are available for download from
energyplus.net
and openstudio.net.
DOE encourages user involvement in the planning and prioritization of new features and bug fixes for EnergyPlus and OpenStudio via the main sites’ Feedback tabs and at
energyplus.uservoice.com
and openstudio.uservoice.com.
All four sites are accessible using the energyplus.net
single sign-on.
Learn more about DOE's
Building Energy Modeling program.
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