Shallow Geothermal: a promising renewable resource for heating and cooling

September 3, 2020 10:15 - 11:45

Location: Virtual Room 3


A major obstacle to the decarbonisation in the building sector is the low share of new construction and of deep renovation in existing buildings. In addition, integration of Renewable Energy Sources like shallow geothermal
for heating and cooling in existing and in particular older and historical buildings faces even more specific problems than in newly constructed buildings.
Shallow geothermal technologies have contributed substantially to decarbonisation in new construction and good examples of refurbished buildings using geothermal energy also exist. However, as market statistics demonstrate, shallow geothermal continues to face barriers in new constructions and even more in deep renovations of existing buildings, mostly due to the built environment. Therefore, to realize a wider deployment in existing buildings, in particular in historical ones, the technologies need to be developed further and innovative ideas must be tested and brought to market.
The workshop relies on the results obtained in two EU funded projects: Cheap-GSHPs and GEO4CIVHIC.
Project Cheap-GSHPs has recently been concluded, with significant results in the domains: mapping geothermal resources, new & innovative drilling and GSHE technologies (co-axial & basket type), software tools for design of GSHP systems, training manuals, regulatory aspects. The training program included 12 training events in 9 countries.
Project GEO4CIVHIC, tackles the main barriers for ground source heat pumps and heat exchangers in existing buildings: installation of ground heat exchangers under constrained site conditions (like drilling in courtyards, gardens, basements etc.); adapting the heat pumps to supply the temperatures needed for older heating and cooling systems that cannot be easily replaced, realizing small size heat pumps for deep renovations, optimizing dual source heat pumps to reduce overall borehole length; providing engineering and decision support tools and overcoming various non-technical barriers.

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