John W. Olver Transit Center by Charles Rose Architects serves as the new central bus station for the city of Greenfield in Massachusetts. The 24,000 sq ft, two-story building also features government offices on the top floor and is expected to serve as the future train depot. Highly innovative in terms of design and construction, the transit center is also respectful of the city’s historic roots. Using brick, copper and locally-sourced stone, the building’s design is a nod to the city’s downtown architecture. The western facade features a computer generated screen that minimizes direct solar heat gain, while windows were been optimally placed to maximize heat, shade and daylighting.
Other strategies to further reduce energy consumption include occupancy sensors, low energy lighting, air preheating with a solar wall and geothermal system and energy heat recovery. Working closely with mechanical and electrical engineers during the design phase, Charles Rose Architects ensured they could reduce energy use and make the building net zero energy. The building utilizes 22 geothermal wells for efficient heating and cooling and a 750 MBH wood pellet boiler for additional heating. A 98 kW ground-mounted photovoltaic array supplies the additional electricity needed by the facility.
“Zero-net-energy design has revolutionized the way we work, “ Charles Rose says. “We are creating buildings that are highly integrated. In other words, the only way to get to net-zero is by integrating mechanical and electrical engineering into the conceptual design phase. It’s a fundamentally different way of designing a building. Our mechanical engineers are serious collaborators now. That’s very important.”
Images ©Charles Rose Architects