[Bldg-sim] EnergyPlus V8.2.0 Release

Michael J Witte mjwitte at gard.com
Tue Sep 30 17:18:15 PDT 2014

The U.S. Department of Energy (DOE) has released EnergyPlus V8.2.0, the 
first release of EnergyPlus built on C++ source code.  New feature 
highlights are listed below.  For more information about EnergyPlus, 
please visit www.energyplus.gov

Installers and source code for V8.2.0 are available at 

The EnergyPlus Development Team

Highlights of this release (V8.2.0)

Core Changes to EnergyPlus
*Internal simulation engine code translated from FORTRAN to C++ to spur 
the evolution of EnergyPlus through improved interaction with a larger 
community through a more popular code base, and improved access to code 
libraries for performance and enhanced capabilities.

*Language change initially caused a slightly slower codebase due to 
translation overhead, however several restructuring efforts in the code 
eventually led to EnergyPlus V8.2.0 being faster than V8.1 in many tests 

*Development transitioned to GitHub, where the source code is to be made 
fully public in the spirit of the open source license.

*Bug fixes throughout.

Building Envelope
*Integrated slab calculation now allow improved simulation of ground 
heat transfer

HVAC, Plant and Refrigeration
*Improved sizing algorithm for including fan heat in cooling coil 
*Improved sizing input options for scaling autosized values
*Additional plant load dispatch algorithms based on meeting component 
part-loading targets
*New models for single-sided natural ventilation with multiple openings
*New on/off fan option for unit heater and unit ventilator
*New fault model for coil fouling
*DOAS direct to zonal water-to-air heat pumps
*Expanded support for table lookup for plant equipment performance
*New zone air mass flow balance option (partially link HVAC flows with 
zone mixing and infiltration)

*Ice storage curve-fit tool

*Windows 7 & 8: 64-bit version (32-bit may be available via Helpdesk)
*Linux (Ubuntu 14.04 and compatible) 64 bit versions; (32-bit and 
RHEL-compatible versions may be available via Helpdesk)
*Mac OSX 10.9 64 bit versions
*EnergyPlus V8.2.0 has been tested on all of these platforms

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