Energy Plus Software - Free

Can be usefull for some.

Peter


EnergyPlus Version 1.2.1 Now Available

The newest version of EnergyPlus (1.2.1) was released on October 1, 2004 and is now available in versions for both the Windows and Linux operating systems. You can download EnergyPlus at no cost from the EnergyPlus web site: www.energyplus.gov .

What's New in EnergyPlus Version 1.2.1

A few of the new features are listed below—see www.energyplus.gov/features.html for a complete list of new features added in this and previous versions:
- Multi-sided polygons
- Daylighting (skylight light wells, daylighting through interior windows, translucent Glass)
- Significant decrease in execution time for COMIS
- Utility rate calculations
- Ventilation load report
- IDFEditor updates include ability to open multiple IDF files and copy/paste objects between files
- EP-Launch updates include ability to select a group of simulations to run and maintaining a history of simulations
- More than 2,000 pages of documentation
- And speed improvements throughout.

Update on User Interfaces?

A number of graphical user interfaces for EnergyPlus are under development. Three (DesignBuilder, EP-QUICK, EPlusInterface) are currently available in development (beta) versions while the fourth (E+IEQ) is planned for 2005. Watch this web page (www.energyplus.gov/ep_interfaces.html ) for up-to-date information on these and other interfaces.

A number of utilities and tools for creating, editing, and running input files come with EnergyPlus, including IDF Editor, EP-Launch, IFCtoIDF, and HVAC-Diagram (see www.energyplus.gov/ep_utilities.html ). Third party tools for creating, editing, and displaying EnergyPlus input files are also available, including DrawBDL, EcoTect, Green Building Studio, EzDrawPlus, TSe+, and EzPlus-Parm. See www.energyplus.gov/third_party_tools.html for more information.