| Building Technology and Urban Systems

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.
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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.

1993

Finlayson, Elizabeth U, Dariush K Arasteh, Charlie Huizenga, Michael D Rubin, and M. M Susan Reilly."Window 4.0: Documentation of Calculation Procedures." (1993).

Sullivan, Robert, Karl J Frost, Dariush K Arasteh, and Stephen E Selkowitz."Window U-Value Effects on Residential Cooling Load." (1993).

Program, Building Technologies."WINDOW Update." (1993).

1992

Sullivan, Robert, Eleanor S Lee, and Stephen E Selkowitz."A Method of Optimizing Solar Control and Daylighting Performance in Commercial Office Buildings."Thermal Performance of the Exterior Envelopes of Buildings V Conference (1992).

Klems, Joseph H, and Jeffrey L Warner."A New Method for Predicting the Solar Heat Gain of Complex Fenestration Systems."Proceedings of the Thermal Performance of the Exterior Envelope of Buildings V Conference (1992).

Griffith, Brent T, and Dariush K Arasteh."Gas-Filled Panels: A Thermally Improved Building Insulation."Proceedings of the Thermal Performance of the Exterior Envelopes of Buildings V Conference (1992).

Beck, Fredric A, and Dariush K Arasteh."Improving the Thermal Performance of Vinyl-Framed Windows."Thermal Performance of the Exterior Envelopes of Building V Conference (1992).

Akbari, Hashem, Sarah E Bretz, James W Hanford, Arthur H Rosenfeld, David J Sailor, Haider Taha, and Willem Bos."Monitoring peak power and cooling energy savings of shade trees and white surfaces in the Sacramento Municipal Utility District (SMUD) service area: project design and preliminary results." (1992). DOI

Arasteh, Dariush K, R. R Christophe Mathis, and William DuPont."The NFRC Window U-Value Rating Procedures."ASHRAE/DOE/BTECC Conference on the Thermal Performance of the Exterior Envelopes of Buildings V (1992).

Osterhaus, Werner K.E, and Ian L Bailey."Large Area Glare Sources and Their Effect on Discomfort and Visual Performance at Computer Workstations."1992 IEEE Industry Applications Society Annual Meeting (1992).

Selkowitz, Stephen E, Liliana O Beltran, Werner K.E Osterhaus, Konstantinos M Papamichael, Jennifer E Schuman, Robert Sullivan, and Michael Wilde."Building Performance Analysis Using Interactive Multimedia Concepts."1992 ACEEE Summer Study on Energy Efficiency in Buildings (1992).

Brown, Richard E, Dariush K Arasteh, and Joseph H Eto."Improving the Thermal Performance of the U.S. Residential Window Stock."1992 ACEEE Summer Study on Energy Efficiency in Buildings (1992).

Sailor, David J, Leo I Rainer, and Hashem Akbari."Measured impact of neighborhood tree cover on microclimate."1992 ACEEE Summer Study on Energy Efficiency in Buildings 9 (1992) 149-158.

Sailor, David J, and Hashem Akbari."Meteorological modeling applications in building energy simulations."1992 ACEEE Summer Study on Energy Efficiency in Buildings (1992).

Warner, Jeffrey L, M. M Susan Reilly, Stephen E Selkowitz, Dariush K Arasteh, and Gregg D Ander."Utility and Economic Benefits of Electrochromic Smart Windows."Proceedings of the 1992 ACEEE Summer Study on Energy Efficiency in Buildings (1992).

Ward, Gregory J."Measuring and Modeling Aniosotropic Reflection."Siggraph Conference (1992).

Bretz, Sarah E, Hashem Akbari, Arthur H Rosenfeld, and Haider Taha."Implementation of solar-reflective surfaces: materials and utility programs." (1992) 67. DOI

Klems, Joseph H."Method of Measuring Nighttime U-Values Using the Mobile Window Thermal Test (MoWiTT) Facility."ASHRAE Transactions 98, Part 2 (1992).

Arasteh, Dariush K."Advancing Superwindows in the United States: Overcoming Technical and Institutional Barriers."International Symposium on Optical Materials Technology for Energy Efficiency and Solar Energy Conversion XI (1992).

Lampert, Carl M, and Yan Ping Ma."Advanced Glazing Technology: Fenestration 2000 Project - Phase III: Glazing Materials." (1992).

Griffith, Brent T, and Dariush K Arasteh."Advanced Insulations for Refrigerator/Freezers: The Potential for New Shell Designs Incorporating Polyer Barrier Construction." (1992).

Akbari, Hashem, and Osman Sezgen."Analysis of energy use in building services of the industrial sector in California: two case studies."Energy and Buildings 19 (1992) 133-141. DOI

Akbari, Hashem, Susan Davis, Sofia Dorsano, Yu Joe Huang, and Steven Winnett."Cooling Our Communities: A Guidebook on Tree Planting and Light-Colored Surfacing." (1992) 245.

Ross, Jennifer T, Michael D Rubin, and Ture K Gustafson."Crystalline Growth of Wurtzite GAN on (111) GaAs."Materials Research Society Symposium 242 (1992) 457. DOI

Griffith, Brent T, Dariush K Arasteh, and Stephen E Selkowitz."Development of a Low Heat Loss, Non-CFC-Based Thermal Insulation: Gas-Filled Panels." (1992).