AffaldVarme Aarhus – Water can remotely cool larger buildings in Aarhus

Date: 09/03/2021

Many larger buildings are in need of cooling. AffaldVarme Aarhus will now examine the demand for climate-friendly, reliable and competitive district cooling in Aarhus.
With the help of heat pumps, which for example can be supplied with seawater, wastewater or groundwater, larger buildings in Aarhus can be cooled directly into the house. By utilizing the same concept that we know from district heating, the cold water is led through pipes out to the buildings for cooling.

“We are exploring the need for district cooling in Aarhus because it is reliable, climate-friendly and competitive. We would very much like to offer this to our large corporate customers if the market's willingness to participate is present, ”says Bjarne Munk Jensen, Director, AffaldVarme Aarhus.

Heat and cold are good together
The reason why AffaldVarme Aarhus looks at district cooling must also be found in a paradox. Funnily enough, cooling plays really well with heat. The hot side of the cooling production is in fact introduced into the district heating system as surplus heat and thus the energy resources are better utilized.

Thus, there are gains for both the economy and the climate. For AffaldVarme Aarhus, it is about making a business that on the one hand helps to create low heat prices for customers, and at the same time supports the journey towards a more climate-friendly district heating.

“We have many decades of experience in making large-scale solutions within district heating. We are now taking that experience further at the same time as we utilize new technologies to create green and reliable solutions, ”says Bjarne Munk Jensen, Director, AffaldVarme Aarhus.

In Copenhagen, district cooling is already a long way off. Over the last 10 years, HOFOR has built up a system which, among other things using seawater, supplies district cooling to, among others, Copenhagen City Hall, Tivoli, the National Museum and the University of Copenhagen.

Great need globally
There is a great need for cooling, and that need will only increase in the future. Globally, the consumption of refrigeration is expected to triple by 2050. Part of the need is being solved today with the help of refrigeration systems in the buildings.

With district cooling, you can solve new and existing needs for cooling without overloading the electrical system and emitting harmful greenhouse gases.

In Aarhus, AffaldVarme Aarhus initially looked specifically at three geographical areas. These areas are in Skejby, Katrinebjerg and Aarhus C. In the long term, the intention is to roll out district cooling to more people.

If the market's willingness to participate is present in Aarhus, AffaldVarme Aarhus hopes to be able to roll out district cooling to its large customers from 2023 on an ongoing basis.