| Building Technology and Urban Systems

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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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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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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.

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2005

Xu, Tengfang T."Best Practice for Energy Efficient Cleanrooms: Cooling tower and condenser water optimization." (2005).

Xu, Tengfang T."Best Practice for Energy Efficient Cleanrooms: Fan/Filter Units." (2005).

Xu, Tengfang T."Best Practice for Energy Efficient Cleanrooms: Minienvironments." (2005).

Xu, Tengfang T."Best Practice for Energy Efficient Cleanrooms: Variable speed pumping." (2005).

Xu, Tengfang T."Best Practice for Energy Efficient Cleanrooms: Variable-speed-drive chiller." (2005).

Frenze, David, Steve E Greenberg, Paul A Mathew, Michael Morehead, Dale A Sartor, and William Starr Jr."Minimizing Reheat Energy Use in Laboratories." (2005).

Xu, Tengfang T."Opportunities for Sustainable Design and Operation of Clean Spaces: A Study on Minienvironment System Performance." (2005).

Frenze, David, Steve E Greenberg, Paul A Mathew, Dale A Sartor, and William Starr Jr."Right-Sizing Laboratory Equipment Loads." (2005).

2004

Payne, Christopher T, and Beverly Dyer."Federal participation in LEED."Greenbuild 2004 (2004).

Xu, Tengfang T, and Ming-Shan Jeng."Laboratory Evaluation of Fan-Filter Units Aerodynamic and Energy Performance."Journal of the Illuminating Engineering Society 47.1 (2004) 5. DOI

Payne, Christopher T, and Alan K Meier."Many small consumers, one growing problem: Achieving energy savings for electronic equipment operating in low power modes."2004 ACEEE Summer Study on Energy Efficiency in Buildings (2004).

Jeng, Ming-Shan, Tengfang T Xu, and Chao-Ho Lan."Towards Green Systems for Cleanrooms: Energy-Efficient Fan Filter Units."SEMI Technology Symposium: Innovations in Semiconductor Manufacturing (2004) 73-77.

Webster, Thomas L."Alternative Air Conditioning Technologies: Underfloor Air Distribution (UFAD)." (2004).

Yee, Gaymond, and Thomas L Webster."Trends in Energy Management Technology - Part 3: State of Practice of Energy Management, Control, and Information Systems." (2004).

Yee, Gaymond, and Thomas L Webster."Trends in Energy Management Technology - Part 4: Review of Advanced Applications in Energy Management, Control, and Information Systems." (2004).

Coleman, Philip, and Jeffrey P Harris."Public Sector Leadership: Government Purchasing of Energy-efficient Products to Save Energy and “Pull” the Market."Kuwait ASST Workshop on Energy Conservation in Buildings (2004).

Xu, Tengfang T."Considerations for Efficient Airflow Design in Cleanrooms."Journal of the IEST 1 (2004) 24-28.

Tschudi, William F, Tengfang T Xu, Dale A Sartor, Jonathan G Koomey, Bruce Nordman, and Osman Sezgen."Energy Efficient Data Centers." (2004).

Tschudi, William F, Tengfang T Xu, Dale A Sartor, and Jay Stein."High-Performance Data Centers: A Research Roadmap." (2004).

Xu, Tengfang T."Introducing a Standard Testing Method for Fan-Filter Units."Advancing Application in Contamination Control 7 (2004) 23-25.

2003

Xu, Tengfang T."Efficient Airflow Design for Cleanrooms Improves Business Bottom Lines."ESTECH 2003 (2003) 108-116.

Wenzel, Thomas P."Use of remote sensing measurements to evaluate vehicle emission monitoring programs: results from Phoenix, Arizona."Transportation Research Part D 6.2 (2003). DOI

Xu, Tengfang T."Performance Evaluation of Cleanroom Environmental Systems."Journal of the Illuminating Engineering Society 46 (2003) 66-73.

2002

Xu, Tengfang T."Airflow Design for Cleanrooms and Its Economic Implications."5th China International Academic Forum and Products Exposition on Contamination Control Technology, Construction Sub-Council of China Council for the Promotion of International Trade and Chinese Contamination Control Society (2002).

Mauritz, Donald, E. E Thomas Morehouse Jr, and John Shugars."A Public Work in Progress: Incorporating Energy Efficiency Into Guide Specifications for New Federal Construction."2002 ACEEE Summer Study on Energy Efficiency in Buildings (2002).