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The GRETA project is co-financed by the European Regional Development Fund through the Interreg Alpine Space programme.
Open‐loop potential
estimation for
energy planning
07th November 2017 – F. Böttcher – TUMGRETA Midterm conference, Salzburg
GERMANY/Sonthofen
07/11/20172
See more at www.alpine-space.eu/projects/greta
+ Monitoring of two geothermal railway switch heating systems
+ Installation of sensors for soil temperature profile measurement
+ Numerical modelling of a geothermal railway switch to study performance optimization options
+ Detailed hydraulic conductivity evaluation of 38 pumping tests in the area of Sonthofen
+ Economic feasibility study on geothermal systems for kindergartens in the Oberallgäu
+ Heat pump user interviews to reveal practical experiences
+ Training course on shallow geothermal energy for local energy consultants
+ Geologic 3D-modelling of the hole Upper Iller valley
+ Reference date measurement of all available wells in the Upper Iller valley aquifer
Case study actions
Actions to foster shallow geothermal energy in the Oberallgäu / Sonthofen:
07/11/20173
See more at www.alpine-space.eu/projects/greta
State of the art in Bavaria
Shallow geothermal energy information platform:
+ Detailed potential maps for closed loop systems
+ Drilling risks
+ Lithology
+ Extraction values
No information for groundwater heat pumps!
07/11/20174
See more at www.alpine-space.eu/projects/greta
Upper Iller Valley - Sonthofen
07/11/20175
See more at www.alpine-space.eu/projects/greta
The steps towards Open-loop potentials
1. Basic hydrogeological questions
2. Questions in open loop potential assessment+ How large can we design groundwater heat
pumps (GWHP)?
+ How densely can we install sustainable GWHP-systems?
07/11/20176
See more at www.alpine-space.eu/projects/greta
The geology
Input data for the geologic 3D-Modell:
+ Three detailed diploma mapping campaigns
+ Geological cross sections
+ Huge amount of borehole logs
+ Seismic refraction traverses
07/11/20177
See more at www.alpine-space.eu/projects/greta
The geology
07/11/20178
See more at www.alpine-space.eu/projects/greta
Groundwatertable
Aquifer thickness
Groundwatertemperature
07/11/20179
See more at www.alpine-space.eu/projects/greta
Volume flux potential
07/11/201710
See more at www.alpine-space.eu/projects/greta
Thermal potential
07/11/201711
See more at www.alpine-space.eu/projects/greta
Outlook: The practical need
Future development areas in Sonthofen:• Am Illerdamm / Tennis Courts• Hirnbeinstr. / Hindelanger Str. • Promenadestr. • Stadionweg• Grüntenkaserne• Jörgwiese• Jägerkaserne
Ongoing exchange with the city of Sonthofen to use the new data in future building projects!
See more at www.alpine-space.eu/projects/gretaFind us on ________
Follow us on ________Send us an email at contact@greta-alpinespace.eu
Thank you!
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