Issue link: http://read.dmtmag.com/i/197178
dards of the UC Davis Teaching and Research Winery, the first winery in the world certified LEED Platinum by the U.S. Green Building Council. The building is also ahead of the curve in meeting California's state energy policy goal that all newly constructed commercial buildings be net zero energy by 2030. To achieve this, a building must be constructed with energy-efficient features and generate renewable energy onsite to supply the building's total energy needs, or enough to offset utility energy used if the building is grid-connected. When fully operational, the Jackson Building and the winery building will operate independently from the campus and utility grid, and will capture and reuse all water onsite needed for winery operations. The building was constructed as a design-build project through a team effort of Northern California construction firms: Pankow Builders; Siegel & Strain Architects; and Guttman & Blaevoet Engineering. NET ZERO ENERGY DESIGN FEATURES The building's foam insulation materials provide super insulation values of R-60 in the walls and R-75 in the roof. The building shell was constructed to be airtight, with efficient seals around doors and windows, and was validated for a low air infiltration rate using a blower door test, more commonly used to test homes. Natural daylight from Solatube skylights and triple-paned windows provide daytime lighting without significant heat transfer, and without artificial lights that consume energy and add heat. The architectural design includes wide, overhanging roof eaves on the building's west, east and north sides to enhance shading and cooling of walls, and to shield the north wall windows from direct sunlight and radiation. The wide eaves also provide additional roof space for photovoltaic (PV) solar panels. The roof has 5 kilowatts (kW) of installed solar PV, enough to support net zero energy currently. Additional PV panels will be installed for a total capacity of 50 kW. Unlike some buildings designed for average temperature and climate conditions, Boulton said, "We designed it to operate for the worst heat event in summer, when temperatures reach 100 degrees or more for five days in a row, and to still maintain interior temperature at 78 degrees or less during such an event." The building utilizes night cooling ventilation, drawing air from a louver on the east wall using two low-power (1.2 kW), high-volume (3,000 cubic feet per second) fans that direct cool night air (usually 55°F-65°F. in summer), first through overhead ducts, then down vertical ducts along the interior wall that distribute cool air near floor level. AT A GLANCE + The Jess S. Jackson Sus- tainable Winery Building is designed to meet performance standards for net zero energy, water and carbon. + Nine identical spaces will test and monitor technologies for sustainable management of winery energy, water and waste. + Efficient design, insulation and night air ventilation enable the building to maintain temperatures below 78°F on the hottest days. + The facility will capture and filter rainwater onsite, and filter and reuse winery wash water to supply all water needed for winery operations. w w w. v w m m e d i a.com N ov - D ec 2013 | V INE YA RD & W INE RY M A N A G EM EN T 73