Energy3D is a simulation-based engineering tool for designing, analyzing, and constructing green buildings and power stations that harness renewable energy to achieve the goal of sustainable development. Users can quickly sketch up a realistic-looking structure or import a structure from an existing CAD file (*.dae), superimpose it on a map image (e.g., Google Maps or lot maps), and then evaluate its energy performance for any given day and location. Based on computational physics and weather data, Energy3D can rapidly generate time graphs (resembling data loggers) and heat maps (resembling infrared cameras) for in-depth analyses. At the end of the design, Energy3D allows users to print it out, cut out the pieces, and use them to assemble a physical scale model. Energy3D has been primarily developed to provide a simulated environment for engineering design (SEED) to support science and engineering education and training. As its simulation results are accurate and its user interfaces are friendly, it may also be used as an entry-level energy simulation tool for professionals.

Accurate solar radiation modeling

Solar irradiance heat map visualizes the distribution of solar radiation on surfaces on a daily basis, which may be useful for natural daylighting and solar potential analyses. The examples below show the results for the lower Manhattan Island in New York City and the US Capitol Building in Washington DC.

Averaged over 150 US locations, the mean daily insolation predicted by Energy3D is within ±14% of the measured result for a horizontal surface and ±10% for a south-facing vertical surface, respectively. The following images show the comparison of calculated and measured data for 20 US cities. The measured data are from the National Solar Radiation Data Base collected by the US Department of Energy.

Insolation on a horizontal surface (monthly breakdown):

(More results...)

Insolation on a south-facing vertical surface (monthly breakdown):

(More results...)

Intuitive building performance analysis

Twelve-month solar irradiance heat maps and heat flux vectors on the building envelope of a house (location: Boston, MA):

Energy usage and sensor graphs:

Solar power station design and analysis

Energy3D supports the design, simulation, analysis, and optimization of both photovoltaic solar power stations and concentrated solar power stations. The examples below show the 6 MW photovoltaic solar farm at the Palmer Metropolitan Airfield in Massachusetts, USA and the PS20 concentrated solar power tower in Seville, Spain.

Printed paper scale models

Energy3D can automatically break down a 3D structure into 2D pieces that can be printed out, cut, and assembled into a paper scale model.

Developed by Saeid Nourian & Charles Xie. © 2011- The Concord Consortium.

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