Free software is either relatively complex to learn (not very “user-friendly”) or limited in functionality, as it is often a free version of proprietary software or focuses more on individual functions or only provides a general consumption estimate without detailed customization.
Typically, there are format and compatibility issues, as it operates in its own file format:
- eQUEST – Highly functional but complex, requiring extensive manual configuration. Compatibility issues with other software exist, though it is flexible and multifunctional. Available for Windows.
- OpenStudio – Similarly powerful but challenging to work with. Available for Windows, Mac, and Linux.
- Simergy – Proprietary software with a free version, which is user-friendly but limited in functionality, sufficient for general assessments. Available for Windows.
- Energy3D – Free software that provides a general consumption assessment without detailed element customization. Suitable for basic evaluations. Available for Windows.
- EnergyPlus – Open-source software but requires manual configuration. Typically used with OpenStudio + Trimble Sketchup. It’s one of the only holistic free solutions, though limited by non-standard formats and compatibility issues. Available for Windows, Mac, and Linux.
Proprietary Software for Simulation
Proprietary software offers enhanced capabilities, including equipment operation details, schedules, load-based operation schedules, and more. It allows for thorough project analysis, such as natural lighting, thermal comfort, and digital twin or calibration modeling, enabling precise forecasting of building loads and energy consumption. These capabilities are generally limited or more difficult to achieve with free software. Additionally, proprietary software provides official support (though, unfortunately, this support may not currently be available in Russia). Here are the main programs:
- IES VE – The market leader with extensive capabilities, including modeling for microclimates, airflows, thermal comfort, etc. It integrates well with BIM software like Revit for porting architectural and other data (with some nuances). If available, this is the best choice.
- TRACE 3D Plus – Originally an HVAC modeling tool, it focuses on these systems as primary consumers but also accounts for other systems. While not as robust in terms of modular variety, it remains a multifunctional package.
- DesignBuilder – Software providing general assessment and some detailed modeling, focusing on ease of use. It offers three packages: one for architects (the most comprehensive), one for engineers (specializing in engineering systems), and one for energy assessors (focused on the UK market). Although there are some limitations, they are minor, and the software fully meets LEED/BREEAM and CLEVER requirements.
Author: Andrey Kuznetsov
Published: April 22, 2024
