<div class="csl-bib-body">
<div class="csl-entry">Adam, D., Markiewicz, R., Brunner, A. T., & Pistrol, J. (2022). Energy foundations and other energy geo-structures – geotechnical contributions to alleviate the global energy crisis. In Ivan Vaníček (Ed.), <i>Foundation Engineering Brno 2022</i> (pp. 9–9). http://hdl.handle.net/20.500.12708/142218</div>
</div>
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/142218
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dc.description.abstract
The subsurface of Earth contains an enormous potential of geothermal energy that can be used for heating and cooling purposes. With advances in the development of the ground-coupled heat pump, it is now economical to use this geothermal energy available in the ground.
Shallow and deep foundations of simple houses and modern high-rise buildings, concrete structures of cut-and-cover tunnels such as bored piles and diaphragm walls, and tunnel linings and anchors of NATM and TBM tunnels and even sewer systems can be used as absorber elements for geothermal heat exchange. The technology is based on absorber pipes laid in concrete structures and a heat transfer fluid circulating through the system. The heat is extracted from the ground or stored in the ground to heat or cool the buildings connected to it. This promising technology results in a significant reduction in fossil energy consumption with moderate installation and low operating costs.
This paper describes the fundamentals and design principles of this highly innovative technology and some of its applications in Austria, ranging from two test installations at the 15 km long Lainzer Tunnel to the Vienna U2 subway extension and the new Vienna Central Station. In addition, the results of a large-scale field test with thermally loaded energy piles focusing on load displacement behavior are presented.
Four of the stations on the U2 subway extension in Vienna, which opened in 2008, have been covering most of their heating and cooling needs from geothermal energy generated by energy diaphragm walls, energy piles, and energy slabs on the station buildings for nearly a decade and a half. As this was the world's first infrastructure building of this type and scale at the time of construction, one of the diaphragm walls of the Taborstraße station was equipped with numerous sensors to obtain data sets on the long-term thermo-mechanical behavior of these wall elements over a period of about 14 years of operation.
The foundation of the new Vienna Central Station serves as a geothermal heat exchanger. The basic heating and cooling needs of the station building are covered entirely by geothermal energy. Recent large-scale pile load tests on two energy test piles under coupled thermal and mechanical loading show that the thermal influence is clearly visible, but neither the load displacement behavior nor the bearing capacity is deteriorated by the thermal loading.
The presented projects – all from the last two decades – show promising and sustainable performance in terms of geothermal energy generation and energy storage potential as well as thermo-mechanical behavior of the energy foundations and energy geo-structures.
en
dc.language.iso
en
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dc.subject
environmental geotechnics
en
dc.subject
renewable energy
en
dc.subject
geothermal energy
en
dc.subject
energy geo-structures
en
dc.title
Energy foundations and other energy geo-structures – geotechnical contributions to alleviate the global energy crisis
en
dc.type
Inproceedings
en
dc.type
Konferenzbeitrag
de
dc.contributor.editoraffiliation
Czech Technical University in Prague
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dc.relation.isbn
978-80-87920-10-7
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dc.description.startpage
9
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dc.description.endpage
9
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dcterms.dateSubmitted
2022
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dc.type.category
Abstract Book Contribution
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tuw.booktitle
Foundation Engineering Brno 2022
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tuw.publication.invited
invited
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tuw.researchTopic.id
E3
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tuw.researchTopic.name
Climate Neutral, Renewable and Conventional Energy Supply Systems
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tuw.researchTopic.value
100
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tuw.publication.orgunit
E220-02 - Forschungsbereich Grundbau, Boden- und Felsmechanik
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dc.description.numberOfPages
1
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tuw.author.orcid
0000-0003-4262-2791
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tuw.event.name
50th Conference with international participation - Foundation Engineering Brno 2022
en
tuw.event.startdate
14-11-2022
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tuw.event.enddate
15-11-2022
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tuw.event.online
On Site
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tuw.event.type
Event for scientific audience
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tuw.event.place
Brno
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tuw.event.country
CZ
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tuw.event.institution
Czech Geotechnical Society of the Czech Institution of Civil Engineers
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tuw.event.presenter
Adam, Dietmar
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tuw.event.track
Single Track
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wb.sciencebranch
Bauingenieurwesen
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wb.sciencebranch
Ingenieurgeologie, Geotechnik
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wb.sciencebranch.oefos
2011
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wb.sciencebranch.oefos
2072
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wb.sciencebranch.value
50
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wb.sciencebranch.value
50
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item.openairecristype
http://purl.org/coar/resource_type/c_5794
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item.grantfulltext
none
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item.languageiso639-1
en
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item.openairetype
conference paper
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item.fulltext
no Fulltext
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item.cerifentitytype
Publications
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crisitem.author.dept
E220 - Institut für Geotechnik
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crisitem.author.dept
E220-02 - Forschungsbereich Grundbau, Boden- und Felsmechanik
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crisitem.author.dept
E220-02 - Forschungsbereich Grundbau, Boden- und Felsmechanik
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crisitem.author.dept
E220-02 - Forschungsbereich Grundbau, Boden- und Felsmechanik