Thermonet in Mageloese housing association, DK
5G network
Picture credits: Søren Skjold Andersen
Facts at one glance
Status of the project:
Commercially operating
Operation mode:
Heating network
Geothermal source:
Shallow / Ambient Geothermal
Max heat capacity:
< 1MW
Network generation:
5G
Year of operation start:
2019
Contact:
kontakt@termonet.dk
Description of the project
The thermonet at Mageloese housing association is a way for the private construction project to extract heat from remedial pumping. Remedial drillings were made to avoid pollution from previous military activities, reaching the nearby water wells. As large amounts of groundwater is being pumped through a water treatment plant, the residents are using the heat from the groundwater to their advantage for heating of the houses.
The Mageloese housing association consists of 29 private semi-detached houses of 90-180 square meters, and one 350 square meter communal house. The project started in 2018, and the thermonet started operating in november 2019.
The thermonet of 2x200 meters, runs like a two-string system in the settlement, supplying individual heat pumps in each house. A heat exchanger is placed in the water treatment plant. Water of eight to ten degrees Celsius is hereby sent to the residences, where the energy for heating is dithdrawn from the water by the heat pumps.
Highlights of the project
In spite of the solution involving relatively many units with its 30 heat pumps, thus being more expensive than fewer and larger heat pumps, this design would have still been chosen even with the knowledge of a year later, to avoid too high a complexitivity.
The Municipality of Furesø will include the heating solution at Mageløse housing association in an idea catalogue for the heating plan of the municipality. They are looking into whether they can use heat sources from bodies of water in the same manner as Mageløse has in the thermonet.
The biggest challenges / obstacles
The housing association discovered that the heat pump industry has yet to qualify for and offer alternatives to individual standard solutions.
It can be difficult to get developers on board to the idea, as the economic profit lies mainly in the operational costs, rather than the costs of construction.
Further supervision of the installation of the heat pumps and plumbing could reduce the challanges experienced by the housing association regarding connection errors.
Detailed characteristic of the project
Site description
Address
Tårnet, 3500 Værløse, Denmark
Status of the project
Commercially operating
Year of operation start
2019
Type of geothermal Heating / Cooling network
Heating network
Type of geothermal technologies involved
Shallow / Ambient Geothermal
Are heat pumps used within this project?
yes - located at the clients
Heating network generation
5G
Involved companies
Owner / operator
Bofællesskabet Mageløse
Planner / installer
Klimadan
Types of used geothermal sources
Source
Depth range
Temperature range
Purpose
Soil/rock - closed loop
< 20 meters
< 20°C
Heat extraction
Shallow groundwater - open loop
20 - 400 meters
< 20°C
Heat extraction
System design
Heat sources included in the network
Monovalent - geothermal energy is the only heat source
Max heating capacity supplied by geothermal energy
< 1MW
Share of geothermal energy
60% - 70%
Annual operation hours for heating
2000 hours - 4000 hours
Annual heating production
< 1 GWh
Annual heating production share
60% - 70%
Energy conversion factor linked to the use of geothermal energy
< 5
Heat source for peak load supply
Geothermal
Has backup system?
Yes
Backup system
Electricity
Share of fossil fuels for annual gross heat production
0 %