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

2004

Linden, Paul F."Flow in an Underfloor Plenum."SimBuild 2004, Building Sustainability and Performance Through Simulation (2004).

Bazjanac, Vladimir, and Tobias Maile."IFC HVAC interface to EnergyPlus - A case of expanded interoperability for energy simulation."SimBuild 2004 (2004).

Bazjanac, Vladimir, and Tobias Maile."IFC HVAC Interface to EnergyPlus: A Case of Expanded Interoperability for Energy Simulation."SimBuild 2004, Building Sustainability and Performance Through Simulation (2004).

Chillar, Rahul, and Richard J Liesen."Improvement of the ASHRAE Secondary HVAC Toolkit Simple Cooling Coil Model for Simulation."SimBuild 2004, Building Sustainability and Performance Through Simulation (2004).

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).

Lee, Eleanor S, Stephen E Selkowitz, Glenn D Hughes, and David A Thurm."Market Transformation Opportunities for Emerging Dynamic Facade and Dimmable Lighting Control Systems."2004 ACEEE Summer Study on Energy Efficiency in Buildings (2004).

Long, Nicholas."Near Real-Time Weather Data Archive."SimBuild 2004, Building Sustainability and Performance Through Simulation (2004).

Xu, Peng, Philip Haves, Mary Ann Piette, and James E Braun."Peak Demand Reduction from Pre-Cooling with Zone Temperature Reset in an Office Building."2004 ACEEE Summer Study on Energy Efficiency in Buildings (2004).

Strand, Richard K, Richard J Liesen, and Michael J Witte."Resources for Teaching Building Energy Simulation."SimBuild 2004, Building Sustainability and Performance Through Simulation (2004).

Ellis, Peter G, Richard K Strand, and Kurt T Baumgartner."Simulation of Tubular Daylighting Devices and Daylighting Shelves in EnergyPlus."SimBuild 2004, Building Sustainability and Performance Through Simulation (2004).

Morrissey, Elmer, James O'Donnell, Marcus Keane, and Vladimir Bazjanac."Specification and Implementation of IFC Based Performance Metrics to Support Building Life Cycle Assessment of Hybrid Energy Systems."SimBuild 2004: Building Sustainability and Performance Through Simulation (2004).

Morrissey, Elmer, James O'Donnell, Marcus Keane, and Vladimir Bazjanac."Specification and Implementation of IFC Based Performance Metrics to Support Building Life Cycle Assessment of Hybrid Energy Systems."SimBuild 2004, Building Sustainability and Performance Through Simulation (2004).

Morrissey, Elmer, James O'Donnell, Marcus Keane, and Vladimir Bazjanac."Specification and Implementation of IFC-Based Performance Metrics to Support Building Life Cycle Assessment of Hybrid Energy Systems."SimBuild 2004, Building Sustainability and Performance Through Simulation (2004).

Morrissey, Elmer, James O'Donnell, Marcus Keane, and Vladimir Bazjanac."Specification of IFC Based Performance Metrics to Support Building Life Cycle Analysis of Hybrid Energy Systems."SimBuild 2004 1st International Conference of IBPSA-USA (2004).

Deringer, Joseph J, Maithili Iyer, and Yu Joe Huang."Transferred Just on Paper? Why Doesn't the Reality of Transferring/Adapting Energy Efficiency Codes and Standards Come Close to the Potential?."ACEEE Summer Study on Energy Efficiency in Buildings (2004).

Zhou, Nan, Weijun Gao, Chris Marnay, Masaru Nishida, and Toshio Ojima."Validation of the Thermal Effect of Roof-Spraying and Green Plants in an Insulated Building."SimBuild 2004, IBPSA-USA National Conference, August 4-6, 2004 (2004).

Liesen, Richard J, and Rahul Chillar."Variable Heat Recovery in Double Bundle Electric Chillers."SimBuild 2004, Building Sustainability and Performance Through Simulation (2004).

Matson, Nance, and Max H Sherman."Why We Ventilate Our Houses – An Historical Look."2004 ACEEE Summer Study on Energy Efficiency in Buildings, August 22-27, 2004 7 (2004) 241-250.

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).

Bhattacharya, Prajesh, S.K Saha, Ajay K Yadav, Patrick E Phelan, and Ravi S Prasher."Brownian Dynamics Simulation to Determine the Effective Thermal Conductivity of Nanofluids."Journal of Applied Physics 95.11 (2004) 6492–6494. DOI

Carroll, William L."RESEM-CA Final Project Report." (2004).

Roberson, Judy A, Carrie A Webber, Marla C McWhinney, Richard E Brown, Margaret J Pinckard, and John F Busch."After-hours Power Status of Office Equipment and Energy Use of Miscellaneous Plug-Load Equipment." (2004) 38.

Bourassa, Norman, Mary Ann Piette, and Naoya Motegi."An Evaluation of Savings and Measure Persistence from Retrocommissioning of Large Commercial Buildings."Proceedings of the 2004 ACEEE Summer Study on Energy Efficiency in Buildings (2004).

Bourassa, Norman, Mary Ann Piette, and Naoya Motegi."Evaluation of Retrocommissioning Persistence in Large Commercial Buildings."Proceedings of the 12th National Conference on Building Commissioning (2004).