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

2020

Haves, Philip, Baptiste Ravache, and Mehry Yazdanian."Accuracy of HVAC Load Predictions: Validation of EnergyPlus and DOE-2 using FLEXLAB Measurements." (2020). DOI

2015

Yazdanian, Mehry, D. Charlie Curcija, Christian Kohler, Dragan Vidanovic, Robert Hart, and Stephen Czarnecki."Control algorithms for dynamic windows for residential buildings."Energy and Buildings 109 (2015). DOI

2011

Selkowitz, Stephen E., Robin Mitchell, Maurya McClintock, Daniel McQuillen, Andrew McNeil, and Mehry Yazdanian."COMFEN 3.0: Evolution of an Early Design Tool for Commercial Façades and Fenestration Systems."Building Enclosure Sustainability Symposium (BESS), April 29-30, 2011 (2011).

2009

Lee, Eleanor S., Stephen E. Selkowitz, Dennis L. DiBartolomeo, Joseph H. Klems, Robert D. Clear, Kyle S. Konis, Robert J. Hitchcock, Mehry Yazdanian, Robin Mitchell, and Maria Konstantoglou."High Performance Building Facade Solutions: PIER Final Project Report." (2009).

Hong, Tianzhen, Stephen E. Selkowitz, and Mehry Yazdanian."Assessment of Energy Impact of Window Technologies for Commercial Buildings." (2009).

Lee, Eleanor S., Dennis L. DiBartolomeo, Joseph H. Klems, Robert D. Clear, Kyle S. Konis, Mehry Yazdanian, and Byoung-Chul Park."Field Measurements of Innovative Indoor Shading Systems in a Full-Scale Office Testbed."ASHRAE Transactions 115.2 (2009) 706-728.

2008

Hong, Tianzhen, Dale A. Sartor, Paul A. Mathew, and Mehry Yazdanian."Comparisons of HVAC Simulations between EnergyPlus and DOE-2.2 for data centers."ASHRAE Conference 115 Part 1 (2008).

2006

Lee, Eleanor S., Dennis L. DiBartolomeo, Joseph H. Klems, Mehry Yazdanian, and Stephen E. Selkowitz."Monitored Energy Performance of Electrochromic Windows Controlled for Daylight and Visual Comfort."2006 ASHRAE Annual Meeting 112 Issue 2 (2006).

Lee, Eleanor S., Stephen E. Selkowitz, Robert D. Clear, Dennis L. DiBartolomeo, Joseph H. Klems, Luis L. Fernandes, Gregory J. Ward, Vorapat Inkarojrit, and Mehry Yazdanian."Advancement of Electrochromic Windows." (2006).

Lee, Eleanor S., Stephen E. Selkowitz, Robert D. Clear, Dennis L. DiBartolomeo, Joseph H. Klems, Luis L. Fernandes, Gregory J. Ward, Vorapat Inkarojrit, and Mehry Yazdanian."A Design Guide for Early-Market Electrochromic Windows." (2006).

2004

Lee, Eleanor S., Mehry Yazdanian, and Stephen E. Selkowitz."The Energy-Savings Potential of Electrochromic Windows in the US Commercial Buildings Sector." (2004).

2003

Rubinstein, Francis M., Mehry Yazdanian, and Jim Galvin."Draft Photosensor Characterization Report." (2003).

2002

Lee, Eleanor S., L. Zhou, Mehry Yazdanian, Vorapat Inkarojrit, Jonathan L. Slack, Michael D. Rubin, and Stephen E. Selkowitz."Energy Performance Analysis of Electrochromic Windows in New York Commercial Office Buildings." (2002).

2000

Driscoll, Debbie A., Mehry Yazdanian, and Michael J. Siminovitch."Structural Stability Analysis of a Quartz Fiber Optic Coupler Under Thermal Loading."Journal of the Illuminating Engineering Society 29.1 (2000) 59-65. DOI

1997

Griffith, Brent T., Elizabeth U. Finlayson, Mehry Yazdanian, and Dariush K. Arasteh."The Significance of Bolts in the Thermal Performance of Curtain-Wall Frames for Glazed Façades."ASHRAE Transactions 104, Part 1 (1997).

1996

Frost, Karl J., Joseph H Eto, Dariush K. Arasteh, and Mehry Yazdanian."The National Energy Requirements of Residential Windows in the U.S.: Today and Tomorrow."ACEEE 1996 Summer Study on Energy Efficiency in Buildings: Profiting from Energy Efficiency (1996).

1995

Klems, Joseph H., Mehry Yazdanian, and Guy O. Kelley."Measured Performance of Selective Glazings."Thermal Performance of the Exterior Envelopes of Buildings VI Conference (1995).

1993

Yazdanian, Mehry, and Joseph H. Klems."Measurement of the Exterior Convective Film Coefficient for Windows in Low-Rise Buildings."ASHRAE Transactions 100, Part 1 (1993).

1991

Yazdanian, Mehry, J. Randy Michelson, and Guy O. Kelley."A Complex Multitasked Data Acquisition and Control System for Measuring Window Thermal Efficiency, or How TSX+ Saved Our Project When It Outgrew RT-11."U.S. DECUS Spring 1991 Symposium, May 6-10, 1991 (1991).