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

Dumortier, Dominique, Ron C Kammerud, Bruce E Birdsall, Brandt Andersson, Joseph H Eto, William L Carroll, and Frederick C Winkelmann."Thermal Energy Storage System Sizing."IBPSA Building Simulation '89 (1989).

1988

Eto, Joseph H."On Using Degree-days to Account for the Effects of Weather on Annual Energy Use in Office Buildings."Energy and Buildings 12.2 (1988). DOI

Eto, Joseph H, and Cecile Meyer."The HVAC Costs of Fresh Air Ventilation."ASHRAE Journal (1988).

Eto, Joseph H, and Anibal T De Almeida."Saving Electricity in Commercial Buildings with Adjustable-Speed Drives."IEEE Transactions of Industry Applications 24.3 (1988). DOI

Eto, Joseph H, and Steven D Gates."Modeling Cogeneration Systems with DOE-2.1C."ASHRAE 1988 Winter Meeting (1988).

Eto, Joseph H, and Cecile Meyer."The HVAC Costs of Increased Fresh Air Ventilation Rates in Office Buildings."ASHRAE 1988 Annual Meeting (1988).

1985

Eto, Joseph H."A Comparison of Weather Normalization Techniques for Commercial Building Energy Use."DOE/ASHRAE/BTECC Conference on Thermal Performance of the Exterior Envelopes of Buildings III (1985).

Eto, Joseph H."Cooling Strategies Based on Indicators of Thermal Storage in Commercial Building Mass."Second Symposium on Improving Building Systems in Hot and Humid Climates (1985).

Eto, Joseph H, and Gay Powell."Implications of Office Building Thermal Mass and Multi-day Temperature Profiles for Cooling Strategies."ASME/AIChe National Heat Transfer Conference (1985).

Buhl, Walter F, Ender Erdem, Joseph H Eto, James J Hirsch, and Frederick C Winkelmann."New Features of the DOE-2.1c Energy Analysis Program."International Building Performance Simulation Association (1985).

Birdsall, Bruce E, Walter F Buhl, Richard B Curtis, Ender Erdem, Joseph H Eto, James J Hirsch, Karen H Olson, and Frederick C Winkelmann."The DOE-2 Computer Program for Thermal Simulation of Buildings."American Institute of Physics (AIP) 135 (1985). DOI

1984

Eto, Joseph H."Commercial Building Cogeneration Opportuntities."ACEEE Summer Study in Energy Efficient Buildings (1984).

Curtis, Richard B, Bruce E Birdsall, Walter F Buhl, Ender Erdem, Joseph H Eto, James J Hirsch, Karen H Olson, and Frederick C Winkelmann."The DOE-2 Building Energy Analysis Program."ASEAN Conference on Energy Conservation in Buildings (1984).

1983

Eto, Joseph H."Optimal Cogeneration Systems for High-Rise Office Buildings."18th Intersociety Energy Conversion Engineering Conference (1983).