Toronto's lake cooling system to cut carbon dioxide emissions

08/30/2005 | Washington Post (tiered subscription model), The

Toronto's lake-source cooling system, the largest of its kind, began operating last summer. The system taps cold water from the bottom of Lake Ontario and transfers the coldness of the water to a separate water supply that circles downtown Toronto. The system will eliminate 40,000 tons a year of carbon dioxide emissions that conventional air conditioning would produce. Thirty-five buildings are participating in the system, and next year several legislative buildings will be added to the network.

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