About Us +
Researchers in the Building Technology & Urban Systems Division (BTUS) at Lawrence Berkeley National Laboratory develop data and technologies that increase energy efficiency and improve the health, safety and comfort of building occupants, in the United States and worldwide.

We work closely with industry partners, academics and government officials to achieve these goals, and share our research widely
Research +
We are at the forefront of cutting-edge research that redefines building technology and explores all areas of urban systems.

We have been leaders for decades in developing energy-efficient windows, improving indoor air quality, coming up with new ideas to fix the nation's electricity grid, and so much more.

Visit our research areas at the right to find out more.
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Publications +
Enjoy presentations from Building Technology & Urban systems research experts on a wide variety of topics in the areas of building energy efficiency, the electricity grid and how it relates to buildings and much more.
- Presentations
News
Tools & Guides +
Explore our tools, guidebooks and software and download for free.

We offer a variety of technologies designed to simulate and model real-world circumstances to assist in energy-saving programs and help building owners build better buildings. These tools can help calculate performance of building systems like windows and shades, help consumers and builders pick the best windows for a variety of applications and much more.

Publications

Publications By Research Area

2013

Lee, Eleanor S, Luis L Fernandes, Howdy Goudey, Jacob C Jonsson, Dragan C Curcija, Xiufeng Pang, Dennis L DiBartolomeo, and Sabine Hoffmann."A Pilot Demonstration of Electrochromic and Thermochromic Windows in the Denver Federal Center, Building 41, Denver, Colorado." (2013).

2012

Hart, Robert, Howdy Goudey, Dariush K Arasteh, and Dragan C Curcija."Thermal Performance Impacts of Center-of-Glass Deflections in Installed Insulating Glazing Units."Energy and Buildings 54.November 2012 (2012) 453-460. DOI

2011

Hart, Robert, Dragan C Curcija, Dariush K Arasteh, Howdy Goudey, Christian Kohler, and Stephen E Selkowitz."Research Needs: Glass Solar Reflectance and Vinyl Siding." (2011).

2008

Mitchell, Robin, Christian Kohler, Joseph H Klems, Michael D Rubin, Dariush K Arasteh, Charlie Huizenga, Tiefeng Yu, and Dragan C Curcija."WINDOW 6.2/THERM 6.2 Research Version User Manual." (2008) 1-126.

Gustavsen, Arlid, Dariush K Arasteh, Bjørn Petter Jelle, Dragan C Curcija, and Christian Kohler."Developing Low-Conductance Window Frames: Capabilities and Limitations of Current Window Heat Transfer Design Tools."Journal of Building Physics 32 (2008) 131-153.

2006

Arasteh, Dariush K, Dragan C Curcija, Yu Joe Huang, Charlie Huizenga, and Christian Kohler."Evaluating Fenestration Products for Zero-Energy Buildings: Issues for Discussion."SimBuild 2006: Building Sustainability and Performance Through Simulation (2006).

2005

Gustavsen, Arlid, Dariush K Arasteh, Christian Kohler, and Dragan C Curcija."Two-Dimension Conduction and CFD Simulations for Heat Transfer in Horizontal Window Frame Cavities."2005 ASHRAE Winter Meeting 111 (2005).

2003

Gustavsen, Arlid, Christian Kohler, Dariush K Arasteh, and Dragan C Curcija."Two-Dimensional Computational Fluid Dynamics and Conduction Simulations of Heat Transfer in Window Frames with Internal Cavities - Part 1: Cavities Only."ASHRAE Winter Meeting (2003).

Mitchell, Robin, Christian Kohler, Dariush K Arasteh, John Carmody, Charlie Huizenga, and Dragan C Curcija."THERM 5/WINDOW 5 NFRC Simulation Manual." (2003).

2002

Powles, Rebecca, Dragan C Curcija, and Christian Kohler."Solar Absorption in Thick and Multilayered Glazings."World Renewable Energy Congress VII (2002).

2001

Arasteh, Dariush K, Robin Mitchell, Christian Kohler, Charlie Huizenga, and Dragan C Curcija."Improving Information Technology to Maximize Fenestration Energy Efficiency."Performance of Exterior Envelopes of Whole Buildings VIII (2001).

Mitchell, Robin, Christian Kohler, Dariush K Arasteh, Charlie Huizenga, and Dragan C Curcija."WINDOW 5.0 User Manual for Analyzing Window Thermal Performance." (2001).

2000

Mitchell, Robin, Christian Kohler, Dariush K Arasteh, Elizabeth U Finlayson, Charlie Huizenga, Dragan C Curcija, and John Carmody."THERM 2.1 NFRC Simulation Manual." (2000) 260.

1999

Huizenga, Charlie, Dariush K Arasteh, Elizabeth U Finlayson, Robin Mitchell, Brent T Griffith, and Dragan C Curcija."THERM 2.0: A Building Component Model for Steady-State Two-Dimensional Heat Transfer."Building Simulation 99, International Building Performance Simulation Association (IBPSA) (1999).

1998

Finlayson, Elizabeth U, Robin Mitchell, Dariush K Arasteh, Charlie Huizenga, and Dragan C Curcija."THERM 2.0: a PC Program for Analyzing Two-Dimensional Heat Transfer through Building products." (1998).

1997

Arasteh, Dariush K, Elizabeth U Finlayson, Dragan C Curcija, Jeff Baker, and Charlie Huizenga."Guidelines for Modeling Projecting Fenestration Products."ASHRAE Transactions 104, Part 1 (1997).

Griffith, Brent T, Dragan C Curcija, Daniel Turler, and Dariush K Arasteh."Improving Computer Simulations of Heat Transfer for Projecting Fenestration products: Using Radiation View-Factor Models."ASHRAE Transactions 104, Part 1 (1997).

1995

Finlayson, Elizabeth U, Dariush K Arasteh, Michael D Rubin, John Sadlier, Robert Sullivan, Charlie Huizenga, Dragan C Curcija, and Mark Beall."Advances in Thermal and Optical Simulations of Fenestration Systems: The Development of WINDOW 5."Thermal Performance of the Exterior Envelopes of Buildings VI Conference (1995).