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

1989

Reilly, M. M Susan, Dariush K Arasteh, and Michael D Rubin."The Effects of Infrared Absorbing Gasses on Window Heat Transfer: A Comparison of Theory and Experiment."Solar Energy Materials 20 (1989) 277-288.

1988

Klems, Joseph H."U-Values, Solar Heat Gain, and Thermal Performance: Recent Studies Using the MoWiTT."ASHRAE TransactionsASHRAE Winter Meeting: Fenestration U-Value Symposium 95, part 1 (1988).

Program, Windows and Lighting, and Florida Solar Energy Center."Commercial Building Fenestration Performance Indices Project, Phase I: Development of Methodology." (1988).

Klems, Joseph H."Measurement of Fenestration Net Energy Performance: Considerations Leading to Development of the Mobile Window Thermal Test (MoWiTT) Facility."Journal of Solar Energy Engineering 110 (1988) 208-216.

Papamichael, Konstantinos M, Joseph H Klems, and Stephen E Selkowitz."Determination and Application of Bidirectional Solar-Optical Properties of Fenestration Systems."13th National Passive Solar Conference (1988).

Reilly, M. M Susan, and Dariush K Arasteh."WINDOW 3.1: A Computer Tool for Analyzing Window Thermal Performance."13th National Passive Solar Conference (1988).

Sullivan, Robert, Dariush K Arasteh, Konstantinos M Papamichael, Jong-Jin Kim, Russell Johnson, Stephen E Selkowitz, and Ross McCluney."An Indices Approach for Evaluating the Performance of Fenestration Systems in Nonresidential Buildings."ASHRAE Transactions 94 (1988).

Bazjanac, Vladimir, and Frederick C Winkelmann."Daylighting Design for the Pacific Museum of Flight: Energy Impacts."1989 International Daylighting Conference Proceedings II (1988) 277.

Sullivan, Robert."Effects of Glazing and Ventilation Options on Automobile Air Conditioner Size and Performance." (1988).

Arasteh, Dariush K, and M. M Susan Reilly."WINDOW 3.1: A PC Program for Analyzing Window Thermal Performance (Program Disk and Tutorial)." (1988).

1987

Pennisi, Agata R, and Carl M Lampert."Optical Properties of Electrochromic Nickel Oxide Devices Utilizing a Polymeric Electrolyte."International Congress on Optical Science and Engineering (1987).

Klems, Joseph H, and H Keller."Measurement of Fenestration Thermal Performance Under Realistic Conditions Using the MoWiTT."3rd International Congress on Building Energy Management (1987).

Sullivan, Robert, Dariush K Arasteh, Glenn Sweitzer, Russell Johnson, and Stephen E Selkowitz."The Influence of Glazing Selection on Commercial Building Energy Performance in Hot and Humid Climates."ASHRAE Conference on Air Conditioning in Hot Climates (1987).

Klems, Joseph H, and H Keller."Thermal Performance Measurements of Sealed Insulating Glass Units with Low-E Coatings Using the MoWitt Field Test Facility."ASHRAE Winter Meeting, Symposium on Fenestration Performance (1987).

Rubin, Michael D, Dariush K Arasteh, and John Hartmann."A Correlation Between Normal and Hemispherical Emissivity of Low-Emittance Coatings on Glass."International Communications in Heat and Mass Transfer 14 (1987) 561-565.

Lampert, Carl M."Advanced Optical Materials for Energy Efficiency and Solar Conversion."Solar & Wind Technology 4 (1987) 347-379.

Sweitzer, Glenn, Dariush K Arasteh, and Stephen E Selkowitz."Effects of Low-E Glazing on Energy Use Patterns in Nonresidential Daylighting Buildings."ASHRAE Transactions 93 (1987) 1553-1566.

Arasteh, Dariush K, John Hartmann, and Michael D Rubin."Experimental Verification of a Model of Heat Transfer Through Windows."ASHRAE Transactions 93 (1987).

Yu, Phillip C, and Carl M Lampert."In-Situ Spectroscopic Studies of Electrochromic Hydrated Nickel Oxide Films."Proceedings of the (1987) 834.

Rubin, Michael D."Progress Report FY 1987: Development of TiN Low-E Coatings." (1987).

Rubin, Michael D."Progress Report: Optical Properties of Thermochromic VO2 Coatings for Windows." (1987).

Sullivan, Robert, and Stephen E Selkowitz."Residential Heating and Cooling Energy Cost Implications Associated with Window Types."ASHRAE Transactions 93 (1987) 1525-1539.

Papamichael, Konstantinos M, and Stephen E Selkowitz."Simulating the Luminous and Thermal Performance of Fenestration Systems."Lighting Design + Application (1987).

Lampert, Carl M."Stability and Durability of Electrochromic Switching Films for Glazings." (1987).

Hartmann, John, Michael D Rubin, and Dariush K Arasteh."Thermal and Solar-Optical Properties of Silica Aerogel for Use in Insulated Windows."12th National Passive Solar Conference (1987).