Assembly of 15,000 meters of high-density polyethylene (HDPE) pipe with a diameter of 1.6 meters, welded by fusion and deployed to the bottom of the lake, up to 83 meters deep.
Heat exchange plant, including 36 large heat exchangers. Connective valve chambers to the cooling station.
Water drawn from Lake Ontario for the city’s potable water supply is now pumped from a deeper source, allowing its cooler and more stable temperature to be utilized for air conditioning before being added to the municipal water supply.
The City of Toronto DLWC system employs three intake pipe lines, each five kilometers in length, laid on the bed of Lake Ontario. This $100 million system took over two and half years to complete, but now supplies an extensive list of downtown Toronto businesses and buildings with an alternative to conventional air cooling—one that is sustainable, cost-effective and efficient.
GENERAL INFORMATION
- Location: Ontario, Canada.
- Client: The City of Toronto and Enwave Energy Corp.
- Contract type: General Contractor, responsible for procurement; construction of intake pipelines, heat exchange plant, heat exchangers and valve chambers; equipment installation, testing and commissioning of the project.
- Infrastructure: Enwave’s Deep Lake Water Cooling system.
- Year of project completion: 2004
WHY IS THIS PROJECT IMPORTANT
ACCIONA’s participation on the DLWC system in the City of Toronto is a prime example of the proud partnerships we seek and another way to demonstrate our commitment to sustainable development. This DLWC system is a revolutionary cooling solution and by far the largest DLWC system in the world. At its capacity, the DLWC will provide enough cooling for 100 commercial towers in downtown Toronto, saving the city money and providing an effective, efficient and sustainable solution to air cooling. It is estimated that the DLWC system can reduce energy consumption by up to 90 percent in contrast to conventional air conditioning.