Deep Lake Water Cooling

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Toronto (Canada)
Toronto
Toronto

The Deep Lake Water Cooling , or DLWC for short , is a project that uses cold water from Lake Ontario to supply various buildings in Toronto with environmentally friendly cold for cooling . Water at a temperature of 4 ° C is taken from Lake Ontario at a depth of around 83 meters and pumped through a pipeline system into the city's district cooling plant. The cold water is collected in the district cooling plant, treated and then fed as district cooling through an underground pipeline network to the individual cooling consumers. In the buildings connected to the cooling network, the excess heat of the building to be cooled is transferred to the water in a heat exchanger, thus cooling the room air. The water heated in this way is used in part to supply the buildings with drinking water . The remainder that is not required is returned to Lake Ontario via the pipeline network.

This project will reduce the electricity required to cool the buildings by 75%. The system went into operation in spring 2004 and supplies, for example, the Steam Whistle brewery, the Air Canada Center and some office buildings .

The plant is operated by the City of Toronto Water Supply Division together with the local energy supplier Enwave.

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