Speaker
Dr
Joerg PRESTOR
(Geological Survey of Slovenia)
Description
In Slovenia, production of geothermal energy from thermal water (T > 20 °C) is actually 635,9 TJ (176,6 GWht (15,19 ktoe). It increases and the potential enables achieving the objectives 2020 (20 ktoe) by the development of additional geothermal resources, better efficiency of existing wells and activation of unused existing wells.
The objective for the contribution from geothermal (ground-source) heat pumps is expected to increase more significantly where the objective is five times greater contribution in 2020 than actual. It is estimated that the actual market growth of geothermal heat pumps applications in Slovenia is in the range from 13 % to 18 %. The quick market growth, not lower than 22 %, would enable to achieve the objective 2020 (38 ktoe) for the contribution of shallow geothermal energy. To foster the market growth, larger geothermal heat pump installations (systems) are very important because they have higher ability to introduce advanced technology, to make quicker steps in the energy contribution and especially in public procurement to be attractive demonstration cases. There are several larger geothermal heat pumps units presented showing that advanced geothermal heat collectors and heat pumps are making good use of shallow geothermal energy potential in different geological and climate conditions characteristic also for the Adriatic region (e. g. Thermal deep foundations piles for the blocks of flats of the Settlement 15. maj in Koper, Ground heat storage and borehole heat exchangers (BHEs) field in the Pipistrel research centre in Ajdovščina, Groundwater well system at the elderly home in Idrija, small BHE field at BIA Separations Co. in Ajdovščina, greater BHE field at the Olmo elderly home blocks in Koper…).
It is assessed that 37 - 74 bigger geothermal heat pumps systems yearly (of > 30 - 200 kW installed capacities) and 650 – 960 minor geothermal heat pump units (approx. 10 kW installed capacity) per year could lead to significant share (till 7 %) of shallow geothermal energy in the renewable energy sources for heating and cooling and to reach the objectives for 2020.
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J. PRESTOR
![J. PRESTOR][9]
[9]: https://indico.cern.ch/event/263557/picture/42.jpg
D. RAJVER
![D. RAJVER][10]
[10]: https://indico.cern.ch/event/263557/picture/43.jpg
Author
Dr
Dušan RAJVER
(Geological Survey of Slovenia)
Co-authors
Dr
Joerg PRESTOR
(Geological Survey of Slovenia)
Dr
Simona PESTOTNIK
(Geological Survey of Slovenia)
