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District energy

District heating

Heat pumps

+1

Power Plant Uses Heat From the Sea to Warm up Houses in Aarhus

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By State of Green | [email protected]
13 September 2017

Heat from seawater
The power plant will profit from its close proximity to Aarhus Bay by extracting energy from the seawater.

The seawater is collected from the dock and transported to the power plant through an underground pipeline. When the power plant’s heatpump has absorbed the energy from the water, the cooled water is led back out into the harbour.

Besides a heat exchanger, the power plant will include a heat pump that gathers heat from Aarhus Bay. The pump will supplement heat when the electricity price is low, and it is able to produce 4.0 MWh heat for each MWh electricity it uses.

The power plant replaces the two oil-fired district heating stations that, during the coldest days of the year, provide Aarhus East with heat.

-Related News: Danes Sort Waste Like Never Before

More than just heat
The plant will not only be supplying heat to the area, it will also constitute an attraction for passers-by. The plant will be part of the streetscape, and the plan is that citizens in the area will be able to use the outer part of the building for eg. sport activities.

-The new power plant in Aarhus East will contribute with more than just district heating. The building will be an attraction for local citizens, but it will also be a display window for technical experts from the world’s major cities who are looking for possibilities within the green transition, says Kristian Würtz, member of the Department for Technology and Environmental Issues in Aarhus municipality.

The power plant will be a building that interacts with its surroundings. It is located close to recreational areas and high profile architecture. The building will therefore be equipped with a large window section with a view to the power plant, in order for Aarhus Waste Incineration (AffaldVarme Aarhus) to be able to use the exterior of the building to explain the knowhow of district heating.

-Related News: Hot Waste Water for District Heating

The cost of the heat supply to Aarhus East is EUR 23 million and is budgeted through Aarhus Waste Incineration's investment plan. Hereof, EUR 403,000 are from EU funding to the development project for the ocean heat pump.

- Source: Energy-supply DK

- Photo: Århus Kommune

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