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Decarbonising a district heat project in Denmark

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ABB is to supply plant for what is claimed to be the world’s largest seawater heat pump, using carbon dioxide as a refrigerant, in Esbjerg, Denmark. The heat pump will use renewable electricity from a local wind farm and extract heat from seawater for use in the Esbjerg district heating system.

The company’s electrical instrumentation and control technology is to be deployed, with packaged motors and variable speed drives for the seawater heat pump. The system from MAN Energy Solutions converts electrical energy to thermal energy using CO2 as a refrigerant for the entire system cycle.

As part of its 2030 strategy to utilise 100% fossil-free heat production, Danish company DIN Forsyning is developing new hybrid renewable district heat plant to replace heat currently supplied by the Esbjerg coal-fired combined heat and power (CHP) plant. The system currently produces about half the district heating for the city, and is due to be decommissioned in April 2023. 

It is
estimated that deployment of alternative heat sources for the district heating will reduce primary energy consumption by 50%. Ultimately, there is a plan for the entire heating network to be powered by renewables, distributed to the Esbjerg plant via infrastructure linked to offshore wind turbines located in the North Sea.

The Esbjerg district heating system will use wind turbines to power the seawater heat pump
Photo: DIN Forsning

News Item details

Journal title: Energy World

Countries: Denmark -

Subjects: District heating Wind farms

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