M.Sc. J. Müller

Johannes Müller, M.Sc.

PhD student
Shallow geothermal working group

Chair of Geology
Henkestraße, 9-11
91054 Erlangen

Phone:+49 9131 85-23331
Fax:     +49 9131 85-29295

Mail: johannes.j.mueller(at)fau(dot)de


PhD thesis

Johannes Müller’s PhD thesis targets the improvement of shallow geothermal systems in strong collaboration with the European project: „Cheap-GSHPs: cheap and efficient application of reliable ground source heat exchangers and pumps“ at the Chair of Geology under supervision of Prof Dr Harald Stollhofen.


Cheap-GSHPs (CHeap and Efficient APplication of reliable Ground Source Heat exchanger and PumpS)

To reduce the total cost of low enthalpy geothermal systems by 20-30 % the project will improve actual drilling/installation technologies and designs of Ground Source Heat Exchangers (GSHE’s). This will be combined with a holistic approach for optimum selection, design and implementation of complete systems across different underground and climate conditions. The proposal will focus on one hand on the development of more efficient and safe shallow geothermal systems and the reduction of the installation costs. This will be realized by improving drastically an existing, innovative vertical borehole installation technology of coaxial steel GSHE and by developing a helix type GSHE with a new, innovative installation methodology. These GSHE’s will be installed to a depth of 40 – 50 meters ensuring improved safety and faster permitting. On the other hand, the proposal will develop a decision support (DSS) and other design tools covering the geological aspects, feasibility and economic evaluations based on different plant set-up options, selection, design, installation, commissioning and operation of low enthalpy geothermal systems. The developments will be demonstrated in six sites with different undergrounds in different climates whilst the tools will be applied to several virtual demo cases.


GEO4CIVHIC (Most Easy, Efficient and Low Cost Geothermal Systems for Retrofitting Civil and Historical Buildings)

The GEO4CIVHIC Project develops several solutions for shallow geothermal energy in the retrofit environment, adapted to the building types, the climate and the geological conditions of the underground, the geothermal system (drilling methodology, GSHE, grouting, etc). Special attention will be awarded to civil and historical buildings.The project’s main objectives are:

  • Identify and where missing develop building blocks solutions in drilling (machines and methods), GSHE types, heat pumps and other renewable energy/storage technologies, heating and cooling terminals with the focus on every type of built environment, civil and historical;

ü  Generate and demonstrate the easiest to install and cost-effective geothermal energy solutions using and improving existing and new tools.