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

2009

Trcka, Marija, Michael Wetter, and Jan Hensen."An implementation of co-simulation for performance prediction of innovative integrated HVAC systems in buildings."Proceedings of the 11th IBPSA Conference (2009) 724-731.

Kumar, V, Bettina Frohnapfel, Jovan Jovanović, Michael Breuer, Wangda Zuo, Ibrahim Hadzić, and Richard Lechner."Anisotropy invariant Reynolds stress model of turbulence (AIRSM) and its application on attached and separated wall-bounded flows."Flow, Turbulence and Combustion 83.1 (2009) 81-103. DOI

Barringer, Felicity."By Degrees: White Roofs Catch On as Energy Cost Cutters."The New York Times (2009).

Aden, Nathaniel T, David Fridley, Nina Zheng, and Nina Khanna."China’s Coal: Demand, Constraints, and Externalities." (2009) 41.

Cho, Young-Hum, Mingsheng Liu, and Xiufeng Pang."Improving Control and Operation of a Single Duct VAV System through CCLEP."ASHRAE Transactions 115.2 (2009) 760-768.

Zhou, Nan, Michael A McNeil, and Mark D Levine."Energy for 500 million Homes: Drivers and Outlook for Residential Energy Consumption in China." (2009).

Sherman, Max H, Iain S Walker, and Darryl J Dickerhoff."Final Report on Residential Integrated Ventilation Energy Controller."Energy Innovations Small Grant 55044A (2009).

Akbari, Hashem, Surabi Menon, and Arthur H Rosenfeld."Global cooling: increasing world-wide urban albedos to offset CO₂."Climatic Change 94.3-4 (2009) 275-286. DOI

Granderson, Jessica, Mary Ann Piette, Girish Ghatikar, and Phillip N Price."Preliminary Findings from an Analysis of Building Energy Information System Technologies."2009 National Conference on Building Commissioning, June 3-5, 2009 (2009).

Letschert, Virginie E, Michael A McNeil, and Nan Zhou."Residential Electricity Demand in China -- Can Efficiency Reverse the Growth?." (2009).

Konstantoglou, Maria, Jacob C Jonsson, and Eleanor S Lee."Simulating Complex Window Systems Using BSDF Data."26th Conference on Passive and Low Energy Architecture (PLEA), June-22-24 (2009).

Petithuguenin, Thomas D.P, and Max H Sherman."Air Distribution Effectiveness for Residential Mechanical Ventilation: Simulation and Comparison of Normalized Exposures." (2009).

Zhou, Nan, and Michael A McNeil."Assessment of Historic Trend in Mobility and Energy Use in India Transportation Sector Using Bottom-up Approach." (2009).

Levine, Mark D, Nan Zhou, and Lynn K Price."The Greening of the Middle Kingdom: The Story of Energy Efficiency in China." (2009).

Jonsson, Jacob C, Michael D Rubin, Annica M Nilsson, Andreas Jonsson, and Arne Roos."Optical characterization of fritted glass for architectural applications."Optical Materials 31.6 (2009) 949 - 958. DOI

Keenan, Christina R, Regine Goth-Goldstein, Donald Lucas, and David L Sedlak."Oxidative Stress Induced by Zero-Valent Iron Nanoparticles and Fe(II) in Human Bronchial Epithelial Cells."Environmental Science & Technology 43.12 (2009) 4555-4560. DOI

Akbari, Hashem, and Arthur H Rosenfeld."Cool roofs could save money, save planet."KGO-TV (abc7news) (2009).

Rubinstein, Francis M, Girish Ghatikar, Jessica Granderson, David S Watson, Paul Haugen, and Carlos Romero."Barrier Immune Radio Communications for Demand Response." (2009).

Hong, Tianzhen."A close look at the China design standard for energy efficiency of public buildings."Energy and Buildings 41.4 (2009) 426-435. DOI

Liu, Xiaobing, and Tianzhen Hong."Comparison of energy efficiency between variable refrigerant flow systems and ground source heat pump systems."Energy and Buildings 42.5 (2009) 584-589. DOI

Wang, Liping, and Nyuk Hien Wong."Coupled simulations for naturally ventilated rooms between building simulation (BS) and computational fluid dynamics (CFD) for better prediction of indoor thermal environment."Building and Environment 44.1 (2009) 95-112.

Sherman, Max H."Infiltration in ASHRAE’s Residential Ventilation Standards."ASHRAE Transactions 115 (2009) 887-896.

Walker, Iain S."Ozone Reductions Using Residential Building Envelopes."INIVE EEIG 30 (2009).

Shen, Eric, and Tianzhen Hong."Simulation-based assessment of the energy savings benefits of integrated control in office buildings."Building Simulation 2.4 (2009) 239-251. DOI

Xu, Tengfang T, Chuang Wang, Tianzhen Hong, and Mark D Levine."Technical Assistance to Beichuan Reconstruction: Creating and Designing Low- to Zero-carbon Communities in New Beichuan." (2009).