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

Wetter, Michael, and Jonathan A Wright."A comparison of deterministic and probabilistic optimization algorithms for nonsmooth simulation-based optimization ."Building and Environment 39.8 (2004) 989-999. DOI

O'Donnell, James, Elmer Morrissey, Marcus Keane, and Vladimir Bazjanac."BuildingPI: A Future Tool for Building Life Cycle Analysis."SimBuild 2004 1st International Conference of IBPSA-USA (2004).

Chantrasrisalai, Chanvit, and Daniel E Fisher."Comparative Analysis of One-Dimensional Slat-Type Blind Models."SimBuild 2004, Building Sustainability and Performance Through Simulation (2004).

Huang, Yu Joe, Robin Mitchell, and Stephen E Selkowitz."Development of Trade-Off Equations for EnergyStar Windows."SimBuild 2004, Building Sustainability and Performance Through Simulation (2004).

Crawley, Drury B, Linda K Lawrie, Curtis O Pedersen, Frederick C Winkelmann, Michael J Witte, Richard K Strand, Richard J Liesen, Walter F Buhl, Yu Joe Huang, Robert H Henninger, Jason Glazer, Daniel E Fisher, Don B Shirley, Brent T Griffith, Peter G Ellis, and Lixing Gu."EnergyPlus: An Update."SimBuild 2004, Building Sustainability and Performance Through Simulation (2004).

Witte, Michael J, Robert H Henninger, and Drury B Crawley."Experience Testing EnergyPlus With the ASHRAE 1052-RP Building Fabric Analytical Tests."SimBuild 2004, Building Sustainability and Performance Through Simulation (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).

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).

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

Griffith, Brent T, and Qingyan Chen."Framework for Coupling Room Air Models to Heat Balance Model Load and Energy Calculations (RP-1222)."HVAC&R Research (ASHRAE) 10.2 (2004).

Sowell, Edward F, Michael A Moshier, Philip Haves, and Dimitri Curtil."Graph-Theoretic Methods in Simulation Using SPARK."High Performance Computing Symposium of the Advanced Simulation Technologies Conference (Society for Modeling Simulation International) (2004).

Sowell, Edward F, Michael A Moshier, and Philip Haves."Graph-theoretic Methods in Simulation Using SPARK."High Performance Computing Symposium of the Advanced Simulation Technologies Conference (2004).

Bhattacharya, Prajesh, Patrick E Phelan, and Ravi S Prasher."Determining the Effective Viscosity of a Nanofluid Using Brownian Dynamics Simulation."1st International Symposium on Micro & Nano Technology (2004).