Cooling From Waste Heat

As heat is an inevitable byproduct of waste incineration and electricity production, waste heat has traditionally been used for district heating. However, in the warmer months when heating is no longer needed, Wien Energie uses waste heat to provide district cooling. By using waste heat instead of electricity to power absorption refrigeration machines, Wien Energie is able to provide cooling either through a connected district cooling network, or through a district cooling centre installed directly in a customer’s building. Compared to conventional air-conditioning units, district cooling uses 4 to 10 times less primary energy.

Stadt Wien - WasserwerkeHochstrahlbrunnen im Rathauspark

This solution was featured in Keeping it Cool market of the 2018 Global Opportunity Report, and was selected based on the criteria of that report. 

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