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

2002

Walker, Iain S, and Max H Sherman."An Easier Way to Measure Duct Leaks."Home Energy Magazine 19.5 September/October (2002).

Wray, Craig P, Iain S Walker, and Max H Sherman."Accuracy of flow hoods in residential applications."Proceedings of the ACEEE Summer Study on Energy Efficiency in Buildings, August 18-23, 2002 1 (2002) 339-350.

Siegel, Jeffrey A, Iain S Walker, and Max H Sherman."Dirty air conditioners: Energy implications of coil fouling."Proceedings of the ACEEE Summer Study on Energy Efficiency in Buildings, August 18-12, 2002 (2002).

Walker, Iain S, Darryl J Dickerhoff, and Max H Sherman."The Delta Q method of testing the air leakage of ducts."Proceedings of the ACEEE Summer Study on Energy Efficiency in Buildings, August 18-23, 2002 1 (2002) 327-338.

Abushakra, Bass, Iain S Walker, Darryl J Dickerhoff, and Max H Sherman."Laboratory Study of Pressure Losses in Residential Air Distribution Systems." (2002).

Sherman, Max H, and Iain S Walker."Residential HVAC and Distribution Research Implementation: Final Report." (2002).

Abushakra, Bass, Iain S Walker, and Max H Sherman."A study of pressure losses in residential air distribution systems."Proceedings of the ACEEE Summer Study on Energy Efficiency in Buildings, Pacific Grove, CA 1 (2002) 1-14.

Siegel, Jeffrey A, Jennifer A McWilliams, and Iain S Walker."Comparison between predicted duct effectiveness from proposed ASHRAE standard 152P and measured field data for residential forced air cooling systems."ASHRAE Transactions 109 (2002).

Matson, Nance, Craig P Wray, Iain S Walker, and Max H Sherman."Potential Benefits of Commissioning California Homes." (2002).

2001

Siegel, Jeffrey A, and Iain S Walker."Deposition of Biological Aerosols on HVAC Heat Exchangers." (2001).

Walker, Iain S."Sensitivity of forced air distribution system efficiency to climate, duct location, air leakage and insulation." (2001).

Piette, Mary Ann, Joseph H Eto, Iain S Walker, Stephen E Selkowitz, Craig P Wray, Bruce Nordman, Alan K Meier, Philip Haves, Richard C Diamond, Jeffrey P Harris, Mithra M Moezzi, Christopher T Payne, and Jonathan G Koomey."Demand-Responsive and Efficient Building Systems as a Resource for Electricity Reliability." (2001).

Walker, Iain S, Max H Sherman, Jacob Wempen, Duo Wang, Jennifer A McWilliams, and Darryl J Dickerhoff."Development of a New Duct leakage Test: Delta Q." (2001).

Walker, Iain S, Craig P Wray, Darryl J Dickerhoff, and Max H Sherman."Evaluation of flow hood measurements for residential register flows." (2001).

Sherman, Max H, and Iain S Walker."Heat Recovery in Building Envelopes."Proceedings of the ASHRAE/DOE/BTECC Thermal Performance of Exterior Envelopes of Buildings VIII, Clearwater Beach, FL (2001).

TenWolde, Anton, and Iain S Walker."Interior Moisture Design Loads for Residences."Proceedings of the ASHRAE/DOE/BTECC Thermal Performance of Exterior Envelopes of Whole Buildings VIII, Clearwater Beach, FL (2001).

Walker, Iain S, Jeffrey A Siegel, and Gwladys Degenetais."Simulation of Residential HVAC System Performance."Proceedings of the ESIM 2001 Conference, Ontario, Canada (2001) 43-50.

2000

Walker, Iain S, and Max H Sherman."Assessing the Longevity of Residential Duct Sealants."Durability of Building and Construction Sealants, (A.T. Wolf Ed.) (2000) 71-86.

Walker, Iain S."Assessing the longevity of residential duct sealants."Proceedings of the RILEM 3rd International Symposium, France (2000) 71-86.

Siegel, Jeffrey A, Iain S Walker, and Max H Sherman."Delivering Tons to the Register: Energy Efficient Design and Operation of Residential Cooling System."Proceedings of the ACEEE Summer Study 2000, Pacific Grove, CA 1 (2000) 295-306.

Walker, Iain S, Max H Sherman, Jeffrey A Siegel, and Mark P Modera."Effects of Duct Improvement and ENERGYSTAR Equipment on Comfort and Energy Efficiency." (2000).

Sherman, Max H, Iain S Walker, and Darryl J Dickerhoff."Stopping Duct Quacks: Longevity of Residential Duct Sealants."Proceedings of the ACEEE 2000 Summer Study on Energy Efficiency in Buildings, Pacific Grove, CA 1 (2000) 273-284.

Walker, Iain S."What Does Duct Cleaning Do?."Home Energy Magazine 17.2 March/April (2000).

1999

Walker, Iain S."Distribution System Leakage Impacts on Apartment Building Ventilation Rates."ASHRAE Transactions 105 (1999) 943-950.

Walker, Iain S, Max H Sherman, Jeffrey A Siegel, Duo Wang, Christopher R Buchanan, and Mark P Modera."Leakage Diagnostics, Sealant Longevity, Sizing and Technology Transfer in Residential Thermal Distribution Systems; Part II." (1999).