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Lake Zurich could provide city cooling

SWITZERLAND: The city of Zurich is considering extending its use of the water from Lake Zurich to provide heating in winter and cooling in summer.

The CHF100m (€92m) Coolcity project has been under investigation for around 18 months with sustainable energy supply company EWZ, it is reported by the Swiss media.

The water in Lake Zurich is said to remain constant at 5ºC all year round. In summer the water is suitable for cooling and in winter enough heat can still be extracted with a heat exchanger to heat buildings. The results of the investigation should be available in March.

Some buildings in the city centre, including the ZKB bank headquarters, already use water from Lake Zurich for heating and cooling.

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