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

1998

Delp, William W, Nance Matson, and Mark P Modera."Exterior Exposed Ductwork: Delivery Effectiveness and Efficiency."ASHRAE Transactions 104 (1998) 709-721.

Walker, Iain S, and Mark P Modera."Field Measurements of the Interactions between Furnaces and Forced Air Distribution Systems."ASHRAE Transactions 104 (1998) 1805-1816.

Walker, Iain S, and David J Wilson."Field Validation of Algebraic Equations for Stack and Wind Driven Air Infiltration Calculations."HVAC&R Research 4 (1998) 119-139.

Sherman, Max H."How Duct Tape Sealed My Place in History."Washington Post (1998) 1.

Akbari, Hashem."Introduction, energy savings of reflective roofs."ASHRAE Technical Data Bulletin 14 (1998).

Walker, Iain S, Max H Sherman, Mark P Modera, and Jeffrey A Siegel."Leakage Diagnostics, Sealant Longevity, Sizing and Technology Transfer in Residential Thermal Distribution Systems." (1998).

Parker, Danny S, Yu Joe Huang, Steven J Konopacki, Lisa M Gartland, John R Sherwin, and Lixing Gu."Measured and simulated performance of reflective roofing systems in residential buildings."ASHRAE Transactions 104 (1998).

Franconi, Ellen M."Measuring Advances in HVAC Distribution System Design."Proceedings of the 1998 ACEEE Summer Study on Energy and Efficiency in Buildings, Pacific Grove, CA 3 (1998) 153-165.

Matson, Nance, Dale A Sartor, and Richard C Diamond."Model Procurement Documents." (1998).

Rubin, Michael D, Rebecca Powles, and Klaus von Rottkay."Models for the Angle-Dependent Optical Properties of Coated Glazing Materials."Solar Energy 66 (1998) 267-276.

Payne, Christopher T."Organizational Dynamics and Energy Policy."1998 ACEEE Summer Study on Energy Efficiency in Buildings (1998).

Carrié, François Rémi, and Mark P Modera."Particle Deposition in a Two Dimensional Slot from a Transverse Stream."Aerosol Science and Technology 28 (1998) 235-246.

Bretz, Sarah E, Hashem Akbari, and Arthur H Rosenfeld."Practical issues for using solar-reflective materials to mitigate urban heat islands."Atmospheric Environment 32 (1998) 95-101. DOI

Matson, Nance, and Helmut E Feustel."Residential Ventilation Systems." (1998).

Walker, Iain S, Jeffrey A Siegel, Karl A Brown, and Max H Sherman."Saving Tons at the Register."Proceedings of the 1998 ACEEE Summer Study on Energy Effciency in Buildings, Pacific Grove, CA 1 (1998) 367-383.

Webber, Carrie A, and Richard E Brown."Savings Potential of ENERGY STAR Voluntary Labeling Programs."1998 ACEEE Summer Study on Energy Efficiency in Buildings 9 (1998) 9.271-9.282.

Konopacki, Steven J, and Hashem Akbari."Simulated impact of roof surface solar absorptance, attic, and duct insulation on cooling and heating energy use in single-family new residential buildings." (1998).

Walker, Iain S."Technical Background for Default Values used for Forced Air Systems in Proposed ASHRAE Standard 152P."ASHRAE Transactions 104.1A (1998) 1360-1375.

Haves, Philip, and Edward F Sowell."The application of Problem Reduction Techniques Based on Graph Theory to the Simulation of Non-Linear Continuous Systems."EUROSIM’98 (1998) pp. 203-207.

Lee, Eleanor S, Dennis L DiBartolomeo, and Stephen E Selkowitz."The Effect of Venetian Blinds on Daylight Photoelectric Control Performance."Journal of the Illuminating Engineering Society 28 (1998).

Dolin, Jennifer R, and Ned R Raynolds."The ENERGY STAR Purchasing Initiative."ACEEE Volume 7 (1998).

Finlayson, Elizabeth U, Robin Mitchell, Dariush K Arasteh, Charlie Huizenga, and Dragan C Curcija."THERM 2.0: a PC Program for Analyzing Two-Dimensional Heat Transfer through Building products." (1998).

Sullivan, Robert, and Frederick C Winkelmann."Validation studies of the DOE-2 Building Energy Simulation Program. Final Report." (1998).

Feustel, Helmut E, and Richard C Diamond."Ventilation in Highrise Apartments."Proceedings of the Room Vent 1998 Conference, Stockholm, Sweden (1998).

1997

Klems, Joseph H."Greenhouse Window U-Factors Under Field Conditions."ASHRAE Transactions 104, Part 1 (1997).