November 2006: CBE Faculty to Head USGBC Research Committee
At the Greenbuild Conference in Denver, Prof. Gail Brager was elected Chair of the USGBC Research Committee. This committee, which consists of high-level representatives from leading research organizations, academia, NGO's, and industry, is working to identify and prioritize research needs in the building industry. USGBC members may sign up to receive information on the committee's events, on the USGBC website.
November 2006: POE Survey Workshops
CBE presented the Occupant IEQ Survey research in two workshops in Portland and Seattle, sponsored by BetterBricks and the USGBC Cascadia Chapter, November 1 and 2. View the presentation (pdf).
September 2006: Lighting Control Startup Scores Funding
Adura Technologies was one of five new companies to receive seed funding under California Clean Tech Open, a competition developed to spur investment in clean technologies. Organizers of the award program announced the five winners at an event at San Francisco's City Hall. Each winner received more than $100,000 worth of prizes, including $50,000 cash, legal and accounting services, public relations consulting, and office space.
Adura was founded in 2004 to commercialize the wireless lighting system originally developed at CBE by Research Specialist Charlie Huizenga. In pilot tests the system has shown energy savings of over 50%.
August 2006: Mixed-Mode Website and Article
CBE launched a unique mixed-mode building website, with eight detailed case studies and a database of basic characteristics of over 150 naturally ventilated and mixed-mode buildings. Visit the site >>
In conjunction with this website launch, Gail Brager's article on mixed-mode cooling appears in the August issue of ASHRAE Journal. The paper may also be viewed on the UC eRepository website (PDF).
June/July 2006: Guidelines for UFAD project design
Our UFAD technology transfer program has been active with two new papers by Tom Webster and Fred Bauman appearing in the June and July issues of HPAC Engineering. View the papers on-line:
Design Guidelines for Underfloor Plenums
Design Guidelines for Stratification in UFAD Systems
May/June 2006: More Lighting Control Press
California Magazine, published by the California Alumni Association, provides an overview of the lighting control technology development in an article by Catriona Stuart.
March 2006: New Recognition for Wireless Lighting Control System
The wireless lighting control system in development at CBE has garnered attention from several sources recently. In March, the founders of Adura Technologies, former UCB graduate student researchers who are now working to commercialize this technology, reached the finalist stage of the Global Social Venture Competition. In reaching this stage, Adura competed successfully against numerous entries from across the United States and abroad. In addition, Adura received recognition from the Flex Your Power program last fall. View the release (pdf)
November 2005: LEED Occupant Survey Study
Are occupants more satisfied in green buildings than in conventional ones? CBE has completed surveys in over 25 green buildings, including 16 LEED-certified buildings. CBE provided updated information on this research in a presentation at the USGBC Greenbuild conference in November. Also, see related research in Judith Heerwagen’s post occupancy evaluation of the Philip Merrill Environmental Center.
November2005: UFAD Article for Facility Managers
CBE Industry Partner Steven Spinazzola PE, Vice President with RTKL, has authored Air Distribution Turned Upside Down in the November issue of Building Operating Management. The article provides facility managers and decision makers with an overview of UFAD benefits, and explains the importance of integrated design and proper HVAC design, when considering UFAD systems.
September 2005: On-line UFAD Design Tips
In its on-line issue of e-News, Energy Design Resources has published Underfloor Air Distribution Systems: Four Tips for Success. The article summarizes design guidance from CBE's extensive research on UFAD systems.
July 2005: Recent Press for CBE Wireless Lighting System
A recent article, Spotlight on Systems Research in Architectural Record describes CBE's efforts to develop a low-cost wireless lighting control system. The system includes remotes that allow building occupants to control lights individually, and integrates light and motion sensors. A team of graduate students led by Research Specialist Charlie Huizenga is currently installing 40 of the individual control units in a pilot study in a UC building. Previous pilot studies showed that the system can save 40% on lighting electrical use.
May 2005: New Green Building Center at UCB
We created the Green Building Research Center at UC Berkeley to advance the University’s educational mission through green design, to promote green building practices on campus, and to broaden research on sustainable technologies at UC Berkeley. In May 2005 the GBRC received a grant from StopWaste.Org to study and promote green building operations in the Office of the President (UCOP) headquarters building. We are using the framework provided by the Leadership in Energy and Environmental Design rating system for Existing Buildings (LEED-EB).
January 2005: CBE Responds to UFAD Inaccuracies
A letter to the editor by CBE Research Specialist Fred Bauman P.E.,appears in the January issue of Consulting-Specifying Engineer. Mr. Bauman's letter addresses a number of inaccuracies from a roundtable discussion of UFAD that CSE published in October 2004. See links below for this response, and the original article:
The Real "Facts" on UFAD, January 2005
Above or Below?, October 2004
October 2004: Thermal Comfort Model Training
CBE provided a special training workshop to coincide with a new release of the UCB Advanced Thermal Comfort Model. This model is capable of modeling human physiological responses under various conditions, and predicting the level of comfort that would result under those conditions. (See below for recent news on the model's recent development). CBE has released a beta-version of the model for testing by its industry partners.
August 2004: New Grant Awarded
CBE has received a grant from the California Energy Commission (CEC) for the development of a flexible, low-cost lighting control system that could provide commercial building owners with more satisfied tenants and significant energy savings. The system will utilize miniature, low-power radio technology currently being developed at UC Berkeley. By using a wireless network instead of traditional wiring, CBE’s research team aims to greatly reduce installation costs for the new system, and to make it cost effective for retrofits in existing buildings. See more details in UC Berkeley's press release>>
The new funding was awarded to CBE through the Energy Innovations Small Grant Program, part of CEC’s Public Interest Energy Research PIER) program. Go to CEC press release>>
August 2004: LEED Buildings Wanted
The rapidly growing number of LEED certified buildings is evidence of LEED's success in transforming the building industry. However there is still a shortage of information about the real performance of these buildings in terms of energy savings, occupant comfort, and productivity.
CBE is starting a new campaign to use our Occupant IEQ Satisfaction Survey to evaluate the performance of LEED buildings, and to compare them to non-rated buildings. CBE has offered to implement the survey on all LEED buildings free of charge, and will give design teams and owners access to survey results using a reporting tool that allows users to filter and view results in detail. (Each CBE member firm is already entitled to 4 surveys per year, free of charge.) If you know of a LEED building that would be a candidate for our survey, please send an email as soon as possible to cbe-survey@berkeley.edu
July 2004: Press for Thermal Comfort Model
CBE’s Thermal Comfort Model has been highlighted in recent print and online articles. Kathleen Maclay of UC Berkeley Media Relations, describes the development of the comfort model, and the recent ASHRAE award: UC Berkeley researcher wins award for work on human thermal comfort model
Garance Burke, a writer for the Sacramento Bee, interviewed CBE staff in his piece on comfort in automobiles on hot summer days: Keep a cool head when your car sizzles.
June 2004: New Acoustical Analysis
CBE researchers have completed a report based on new analysis of data collected from over 80 non-residential buildings using CBE’s Occupant IEQ Surveys. The analysis reveals that occupants in private offices are significantly more satisfied with acoustics than occupants in cubicles, and that over 60% of occupants in open plan cubicles think acoustics interfere with their ability to get their jobs done. Results of this analysis have been submitted for publication, and are expected this fall. More details>>
June 2004: Adaptive Comfort in Naturally Ventilated Buildings
Research led by Prof. Gail Brager has determined that people with access to operable windows tolerate a wider range of temperatures and air velocities. The final report on this three-year research effort was presented at the 2004 ASHRAE Annual Meeting, in Nashville, June 26-30. Click here for an overview of the project and the research findings>>
March 2004: Presentations
Building occupants are a valuable source of information about how a building is performing. A recent presentation by CBE's Leah Zagreus and David Lehrer, "Using Information Technology and Occupant Feedback to Improve Building Operations," describes two CBE projects that can help building operators to collect and analyze feedback from occupants to identify and diagnose problems. The presentation, given at the National Facilities Management and Technology (NFM&T) Conference in Baltimore on March 10th, may be downloaded by clicking here. (PDF, 3.4 MB)
February 2004: ASHRAE Award for CBE Researcher
CBE research specialist Dr. Zhang Hui has been awarded the ASHRAE Ralph Nevins Physiology and Human Environment Award. This award is presented each year for significant accomplishment in the study of human responses to the environment. Hui’s PhD dissertation study, “Local Thermal Comfort in Asymmetrical and Transient Environments,” was funded by the National Renewable Energy Laboratory (NREL). In the study, Hui conducted over 100 individual human subject tests in CBE’s thermal test chamber. Test data were used to quantify human sensation and comfort in non-uniform, changing thermal environments, and to develop mathematical models for predicting thermal comfort for segments of the body, and for overall comfort. The results of this study have now been incorporated into the UCB Advanced Thermal Comfort Model. This tool now has the capability to allow building designers and researchers to predict physiological responses and comfort sensations under a wide variety of realistic conditions.
January 2004: UFAD Design Guide Available
The Underfloor Air Distribution (UFAD) Design Guide is now available from the ASHRAE. This guide, authored by CBE Research Specialist Fred Bauman and Allan Daly of Taylor Engineering, is the product of collaborative research and documentation by CBE and its industry members. The guide has been developed to assist engineers, architects, owners, facility managers, manufacturers, installers, and other users of underfloor air distribution technology. To purchase the guide please go to the online ASHRAE Bookstore.