What if a building wasn’t just sustainable, but actually benefitted the environment? It’s a lofty goal, but the University of British Columbia is trying to achieve it with the construction of what they believe will be the greenest building in North America.
Right now, the Centre for Interactive Research on Sustainability (CIRS) is a two-story shell of a building: there are no doors, the stairs are rough, and rebar and plywood are the main decor instead of office furniture and potted plants. But by the time it’s completed this June, CIRS will be more than just a stylish campus building: it will meet both the LEED Platinum and Living Building Challenge standards, and give back more than it’s taking in air, water and energy, upping the productivity and happiness of the people who inhabit it.
CIRS relies on a series of heating systems, including 16 geothermal rods, solar hot water, and a heater exchange connected to the adjacent Earth and Ocean Sciences Building.
In a climate where the amount of heating in winter matches the cooling in summer, geothermal rods could successfully mine the earth’s cooling and hot air to operate a building like CIRS.
But in a place like Vancouver, where the amount of heat required is three times the cooling, a geothermal system runs the risk of taking out too much heat and cooling the earth, causing a system decline over time. To avoid this, CIRS takes as much heat out of the ground as it does cool air, and relies on heat exchangers capturing wasted air from a nearby building to warm up the rest.
“(Earth and Ocean Science Building) consumes 1,600 megawatt hours a year of steam from the steam plant, and 990 goes through the roof, the fume hoods. So that building, by law, that’s 10 air changes in hour in every fume hood, and that’s 990 megawatt hours through the roof,” says John Robinson, executive director of the Sustainability Initiative.
“We’re taking all of that heat, bringing it into CIRS, we only need 300, we’re giving 600 back to that building. So we’re reducing their steam use by 600, which reduces natural gas burning by 860 at the steam plant — that’s 150 times a year. So the net affect of adding this building is to reduce natural gas burning at UBC.”
CIRS’s John Robinson
John Robinson, Sustainability Initiative director: “The new sustainability agenda is about making people’s lives better.”
Robinson hopes building symbiosis models such as this will not only inspire future construction to rely on existing systems and improve them, but will inspire others to think of sustainability as being about more than just one building.
“Sustainability is not a building scale phenomenon, it’s an actual neighbourhood or community scale,” he says.
Read the whole article:
http://thetyee.ca/News/2011/03/28/EarthBuilding/
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