Thermonet at Vibereden in Vorbasse, DK
5G network
Picture credits: GeoDrilling
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:
2021
Contact:
kontakt@termonet.dk
Description of the project
The thermonet of Vibereden in Vorbasse, DK, is a country estate used for holiday appartments.
It is an example of how a thermonet can be implemented at a smaller scale, as in this case where it is supplying just a house, as well as a nearby workshop, with heating and domestic hot water.
The thermonet consists of horizontal PE-pipes and a total of five vertical drillings in varying depth. Two 120 meter depth drillings, as well as one of each 100 meters, 80 meters and 60 meters depth respectively.
The thermonet at Vibereden was established in 2021. Already in 2014, as the main house had a heat pump installed, the drillings were made, and the heat pump connected to these. Mostly as a test, the 13 kW heat pump were connected to one of the drillings of 120 meters depth, and was then in operation until 2021.
Additionally the thermonet is capable of supplying a third heat pump if neccessary, as well as providing cooling.
Highlights of the project
The first heat pump connected back in 2014, would usually require a drilling of 325 meters depth. It does however function on a drilling of 1/3rd the normal depth, due to a large and constant flow of water in the underground at the drillings. This was not initially foreseen, but provides the insight that certain underground properties leaves the drillings with larger capacity, and thus makes the investment costs more affordable, as well as sharable.
The biggest challenges / obstacles
Regarding sharing the thermonet, it is advised to have a third party involved in the project, who has the responsibility of the distribution of goods, economy etc., for the sake of the future cooporation of the thermonet.
Detailed characteristic of the project
Site description
Address
Oxlundvej, 6623 Vorbasse, Denmark
Status of the project
Commercially operating
Year of operation start
2021
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
Number of clients supplied
< 10
Depth range
1-120
Involved companies
Owner / operator
GeoDrilling
Planner / installer
Klimadan
Driller
GeoDrilling
Types of used geothermal sources
Source
Depth range
Temperature range
Purpose
Soil/rock - closed loop
< 20 meters
< 20°C
Heat extraction
Soil/rock - closed 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 %