Abstract
The use of shallow geothermal energy instead of fossil fuels can lead to substantial reductions in CO2 emissions. However, the use of shallow geothermal energy in Denmark is limited compared to, e.g. Sweden and Germany and we still lack know-how and experience with its use in Denmark. In co-operation with research and industry partners, the Geological Survey of Denmark and Greenland is conducting a three-year project GeoEnergy, Tools for ground-source heating and cooling based on closed-loop boreholes (www.geoenergi.org). The objective of the project is to acquire knowledge and develop tools and best practice for the design and installation of shallow geothermal energy systems.
Highlights
The use of shallow geothermal energy instead of fossil fuels can lead to substantial reductions in CO2 emissions
The geothermal gradient in Denmark is 25–30°C per kilometre (Mathiesen et al 2009) with an upper zone of seasonal variations. The thickness of this zone has not been investigated in detail in Denmark, but a general thickness of 10–20 m may be expected (Fig. 1; Banks 2008)
The shallow geothermal energy is exploited in combination with heat pumps bringing the temperature to the desired operating temperature of the heating system
Summary
The use of shallow geothermal energy instead of fossil fuels can lead to substantial reductions in CO2 emissions. The use of shallow geothermal energy in Denmark is limited compared to, e.g. Sweden and Germany and we still lack know-how and experience with its use in Denmark. In co-operation with research and industry partners, the Geological Survey of Denmark and Greenland is conducting a three-year project GeoEnergy, Tools for ground-source heating and cooling based on closed-loop boreholes (www.geoenergi.org). The objective of the project is to acquire knowledge and develop tools and best practice for the design and installation of shallow geothermal energy systems
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