It supports the specific HVAC objects and zone configurations present in that exact EnergyPlus release.
While the official release notes for version 2.9.0 highlight several new features including missing methods added to the model API, performance improvements, and bug fixes, version 2.9.1 builds upon this foundation with refinements and stability enhancements. The most significant features of this version include:
OpenStudio 2.9.1 is fully supported on:
Projects that began development during the 2020 timeframe may have substantial model libraries and custom measures developed specifically for version 2.9.1. These users can continue using version 2.9.1 to avoid the effort and risk of migrating to newer versions.
OpenStudio 2.9.1 serves as a pivotal bridge in the evolution of Building Energy Modeling (BEM), functioning not just as a standalone tool but as a sophisticated software development kit (SDK) that translates complex architectural designs into actionable energy data. This specific version, often paired with EnergyPlus 9.2.0, represents a stable milestone in the industry's shift toward open-source, cross-platform analysis. The Role of OpenStudio in Modern Engineering openstudio 2.9.1
This comprehensive guide explores the core capabilities of OpenStudio 2.9.1, its compatibility matrix, installation procedures, and its enduring role in the building energy modeling (BEM) industry. What is OpenStudio 2.9.1?
OpenStudio 2.9.1 was a patch update to the v2.9.0 release, which itself marked a major update by introducing EnergyPlus 9.2.0. This version update included several new features, performance improvements, and key bug fixes. It was primarily designed to work with and SketchUp 2017 or 2018 as the 3D modeling environment. One of the most important notes in the release documentation is that OpenStudio 2.9.1 is not compatible with SketchUp 2019 ; support for 2019 was scheduled to begin with the upcoming OpenStudio 3.0 pre-release. For Mac users in particular, a notable technical detail is that developing measures for v2.9.1 requires Ruby 2.2.5, which is considerably older than the default Ruby version pre-installed on newer Macs. It supports the specific HVAC objects and zone
Version 2.9.1 features reliable hooks into Radiance, a highly accurate ray-tracing software package. This allows energy modelers to simulate spatial daylight autonomy (sDA) and annual sunlight exposure (ASE), blending visual comfort metrics directly with thermal load calculations. Compatibility and System Requirements
In later versions (3.0+), NREL decoupled the classic Application GUI and shifted geometry workflows toward the standalone tool and alternative software connections. Engineers who mastered the SketchUp-to-OpenStudio 2.9.1 pipeline often maintain this specific installation to preserve their rapid prototyping speed. Key Features and Capabilities of Version 2.9.1 These users can continue using version 2
OpenStudio 2.9.1 is typically bundled with EnergyPlus 9.2.0, the world-renowned simulation engine. OpenStudio acts as a pre-processor, creating the necessary input files (IDF) for EnergyPlus, and a post-processor, interpreting the results. 4. OpenStudio CLI (Command Line Interface)
OpenStudio 2.9.1 is hardcoded to work with .