Seattle’s Greenfire campus, a mixed-use development, was honored by ASHRAE for its energy-efficient design. 

The project, designed by construction firm WSP Parsons Brinckerhoff, received a second-place 2015 technology award in the American Society of Heating, Refrigerating and Air-Conditioning Engineers’ commercial buildings category.

The Greenfire Campus is made up of a four-story 27,300-square-foot office/retail building and a six-story 23,400-square-foot apartment building with a large commons area between them and parking structure below. 

The ASHRAE Technology Awards recognize outstanding achievements by members who have successfully applied innovative building design in the areas of occupant comfort, indoor air quality and energy conservation. Their designs incorporate ASHRAE standards for effective energy management and indoor air quality.

 “For our project team, the principle of ‘sensible sustainability’ provided a guiding hand for setting high-performance strategies,” said Tom Marseille, senior vice president at WSP Parsons Brinckerhoff and managing director of the Seattle office. “This project was ultimately completed using an integrated, highly collaborative effort throughout design and construction that is on track to achieve a LEED v3 (Leadership in Energy and Environmental Design version three) platinum certification.”

Design strategies such as a “right-sized” geothermal HVAC loop that was shared by both buildings through water-to-water heat pumps, radiant heating in residential units, mixed-mode passive cooling in office spaces with back-up chilled beams, heat recovery ventilation, rainwater harvesting for irrigation, low-flow plumbing fixtures and appropriate renewable energy strategies ultimately led to the success of the project, the firm said.

The design energy model for the apartment building anticipated it would use 42 percent less energy than a comparable building, while energy for heating and domestic hot water production was anticipated to use only about 30 percent of the total energy consumed. The energy model for the office portions of the office/retail building anticipated a 70 percent reduction in energy use compared with a typical building.