This article is part of BD+C's special five-part Technology Report 2014: Top tech tools and trends for AEC professionals.
For more than a decade, the U.S. Department of Energy has made its EnergyPlus energy analysis and thermal load simulation program available for free to Building Teams.
Using EnergyPlus, AEC professionals can model heating, cooling, lighting, ventilation, and other energy flows, as well as water consumption, within a building design.
But without a major rewrite of the program since its creation, using EnergyPlus could exhibit slow performance and occasionally inaccurate analysis results.
The programming language it was originally written in, Fortran, simply could not keep up with advances in the hardware and software computing environment. FORTRAN is a language aimed at scientific programs to be run by scientists for days and weeks on supercomputers, not by building designers running multiple iterations of a design idea in a matter of a few hours.
Because it wasn't well integrated with common architectural design software, EnergyPlus never gained widespread adoption by architects working in the conceptual stage of a project.
At Greenbuild 2013, Autodesk (working pro bono) turned over brand new engine source code to the DOE to create a completely rewritten EnergyPlus for a forthcoming version. The new code will be made available under the DOE’s open source license.
Autodesk’s software engineers translated EnergyPlus—more than 600,000 lines of code—to C++, a modern, object-oriented language that is better supported on mass-market hardware and software platforms.
As a result, a larger ecosystem of developers and vendors will be able to contribute updates to the code in order to improve performance and decrease the time required to run energy model simulations.
The forthcoming version will also work better with BIM applications, auditing tools, and energy dashboards after it is released and developers are able to work on improved integrations.
For more, visit: http://apps1.eere.energy.gov/buildings/energyplus.
Related Stories
| Jan 2, 2013
Construction jobs made gains in 2012, even with a slow Q4, says Gilbane report
The construction sector in the nine states with 50% of construction employment was up 169,000 jobs from February to September 2012, following a lost of 137,000 jobs from September 2011 to January 2012.
| Dec 21, 2012
ABI gains for fourth straight month
Positive business conditions for all building sectors.
| Dec 17, 2012
CSM Group names recipient of the CSM Architect Fellowship Grant
With the money from the grant, Harlow has chosen to use it entirely for the Chapter of American Institute of Architecture Student’s Freedom by Design Program at Andrews University.
| Dec 9, 2012
AIA: Laboratory design, building for breakthrough science
To earn 1.0 AIA/CES learning units, study the article carefully and take the exam.
| Dec 9, 2012
The owner’s perspective: high-rise buildings
Douglas Durst on the practicalities of development: “You must think about a building from the inside out.”
| Dec 9, 2012
Greenzone pop quiz
Greenbuild attendees share their thoughts with BD+C on the SAGE modular classroom.
| Dec 9, 2012
Modular classroom building makes the grade
SAGE modular classroom opens eyes, minds at Greenbuild 2012.
| Dec 9, 2012
14 great solutions
Welcome to the third installment of Building Design+Construction’s “Great Solutions,” highlighting 14 innovative technologies and products that you can put to work in your next project.