California Winery to Attain Net Zero Energy with breakthrough sustainability technologies

Jennifer Wagner

University of California, Davis’ new Jess S Jackson Sustainable Winery Building (JSWB) is expected to be the first building at any university to be certified Net Zero Energy under the Living Building Challenge, a rigorous building performance rating system. This building uses various green services to provide sustainable resources, such as water harvesting and filtration and power production and conservation, to adjacent Teaching and Research Winery and August A Busch III Brewery and Food Science Laboratory.

Looking to reduce its energy usage and carbon footprint, the JSWB design team relied on building orientation and each of its suppliers to provide high impact solutions for the building envelope. The project used more than 2500 concrete masonry units (CMU) made using carbon sequestration technology, which permanently stores waste carbon dioxide into the units. Lowcarbon block, combined with the first use of low CO2, 90% cement replacement mix grout, makes this one of the lowest-carbon CMU walls built to date. Fifty percent cement replacement was achieved in slab and foundations.

The well-insulated envelope and large roof overhangs together minimize heat gain. The CMU wall has been incorporated to introduce mass to the interior space inboard of the insulation. Grouted solid, the wall plays an important role in the mechanical system functionality, as its ability to store and release heat over time helps to normalize the interior air temperature, to a comfortable 72°, in a climate region with some of the greatest daily temperature swings in the country. An added bonus is the durability the CMU wall lends to the industrial facility.

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