An Award-Winning Barn

The mission of the Center for Agroecology & Sustainable Food Systems (CASFS or the Center) at the University of California, Santa Cruz (UCSC) is to research, develop, and advance sustainable food and agricultural systems that are environmentally sound, economically viable, socially responsible, nonexploitative, and that serve as a foundation for future generations.

On the UCSC campus, the Center manages the UCSC Farm and the Alan Chadwick Garden, both internationally known sites for training and research in organic horticulture and agriculture. These facilities are organically certified in accordance with the California Organic Foods Act of 1990. Students, faculty, and researchers use both the Farm and Garden as research and teaching sites.

The Cowell Ranch Hay Barn

The newest CASFS facility is the historic Cowell Ranch Hay Barn, which opened in the spring of 2016 after a complete reconstruction effort. Located near the UCSC campus entrance at the edge of the UCSC Farm, the Hay Barn provides office space, a reception area and visitors center, a new entrance to the Farm, and campus and public meeting and event space.

The restored Cowell Ranch Hay Barn continues to reap recognition and awards, the latest from professionals in the field of building systems design.

The barn won technology awards from the Golden Gate Chapter and Region X of ASHRAE (the American Society of Heating, Refrigerating, and Air-Conditioning Engineers), a 56,000-member organization that represents heating, ventilation, air conditioning, and refrigeration professionals. The project also received an honorable mention in the national ASHRAE competition. A certified LEED-2009 Gold building, the Hay Barn has previously received honors from architects, preservationists, and woodworkers.

The restoration of the dilapidated historic structure incorporated period construction techniques from the 1860s. Now home to the CASFS headquarters, the barn is a multi-use facility that has become a popular site for campus and community gatherings, weddings, and special events.

Efficient Systems

The ASHRAE awards recognize the Hay Barn’s energy-conservation systems, which include a passive natural ventilation cooling strategy rather than air conditioning. In addition, the building’s well-insulated “envelope”—the roof, walls, and floor—was constructed to minimize the flow of air, water, and heat; skylights and windows were placed strategically; and a highly efficient heating-only ventilation system was installed. Other notable features include:

  • A zone-controlled, in-slab, all-electric radiant heating system that circulates hot water through the exposed concrete floor.
  • Highly insulated roofs, walls, and windows that lower heat loss.
  • Large barn doors, windows, and skylights that provide cross ventilation and give occupants hands-on control of the indoor environment, while also minimizing repair and maintenance costs.
  • A high-efficiency, occupant-controlled LED lighting system, modeled and specified by Assistant Energy Manager Sarah Gilchrist, that provides quality lighting with minimal energy.

“The Hay Barn project is a perfect blend of innovation and restraint,” says Patrick Testoni, campus energy manager. “We integrated simple but reliable systems into this historic structure, but we were restrained, too—avoiding big, complicated systems in favor of taking advantage of our mild climate.”

Leveraging local wind and weather patterns meant designers could rely on simpler heating and ventilation systems, which also blend in with the site ecology.

The Hay Barn’s energy systems have earned rave reviews from users, as well.

“Whether we have a small group of staff working in the office or a very large wedding party, there’s great air flow, and it’s relatively easy to get the place warm or cool, as circumstances dictate,” says CASFS Executive Director Daniel Press. “The energy systems operate very much in the background, out of sight and quietly, so we can focus on our work and the beautiful aesthetics of the barn itself.”

The goals of the renovation of the Hay Barn were to maintain the historic nature of the building, dramatically increase its comfort, and reduce energy use to the point that its consumption could be offset by a new central campus photovoltaic array.

After two years of operation, the barn uses only about one-fifth the average energy typically used by 50 university buildings in the state, according to the campus’ ASHRAE award submission. An added benefit of the simple mechanical systems that were used is that the cost was only $25 per square foot—about half of the normal industry standard in the region, according to the campus award submission.

See more about the UCSC Cowell Ranch Hay Barn at cowellhaybarn.ucsc.edu.

This article originally appeared in the College Planning & Management June 2018 issue of Spaces4Learning.

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