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

Akbari, Hashem, Steven J Konopacki, Danny S Parker, Bruce A Wilcox, Charles N Eley, and Martha G VanGeem."Calculations in support of SSP 90.1 for reflective roofs."ASHRAE Transactions 104.1A (1998) 984-995.

Spitler, Jeffrey D, Simon J Rees, and Philip Haves."Comparison of North American and U.K. Cooling Load Calculation Procedures - Methodology."ASHRAE Transactions 104.2 (1998) 47-61.

Rees, Simon J, Jeffrey D Spitler, and Philip Haves."Comparison of North American and U.K. Cooling Load Calculation Procedures - Results."ASHRAE Transactions 104.2 (1998) 36-46.

Rosenfeld, Arthur H, Hashem Akbari, Joseph J Romm, and Melvin Pomerantz."Cool communities: strategies for heat island mitigation and smog reduction."Energy and Buildings 28 (1998) 51-62. DOI

Piette, Mary Ann, Lisa M Gartland, Satkartar T Khalsa, Peter Rumsey, Eng Lock Lee, Anthony Sebald, and Christine Shockman."Development and Testing of an Information Monitoring and Diagnostics System for Large Commercial Buildings."Proceedings of the 1998 ACEEE Summer Study on Energy Efficiency in Buildings (1998).

Webster, Thomas L, and Peter Benenson."Duty Cycling Controllers Revisited: FEMP Technology Assessment Report." (1998).

Michalak, Franck, Klaus von Rottkay, Thomas J Richardson, Jonathan L Slack, and Michael D Rubin."Electrochromic Lithium Nickel Oxide Thin Films by RF-Sputtering from a LiNiO₂ Target."Electrochimica Acta 44 (1998) 3085-3092.

Isidorsson, Jan, Claes G Granqvist, Klaus von Rottkay, and Michael D Rubin."Ellipsometry on Sputter Deposited Tin Oxide Films: Optical Constants Versus Stoichiometry Hydrogen Content, and Amount of Electrochemically Intercalated Lithium."Applied Optics 37 (1998) 7734-7741.

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).