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dc.contributor.author
Meggers, Forrest
dc.contributor.author
Baldini, Luca
dc.contributor.author
Leibundgut, Hansjürg
dc.date.accessioned
2019-06-18T15:35:27Z
dc.date.available
2017-06-10T08:36:17Z
dc.date.available
2019-06-18T15:35:27Z
dc.date.issued
2012-08
dc.identifier.other
10.3390/en5083149
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/55247
dc.identifier.doi
10.3929/ethz-b-000055247
dc.description.abstract
Ground heat is a renewable resource that is readily available for buildings in cool climates, but its relatively low temperature requires the use of a heat pump to extract it for heating. We developed a system that uses low temperature ground heat directly in a building wall to reduce transmission heat losses. The Active Low Exergy Geothermal Insulation Systems (ALEGIS) minimizes exergy demand and maximizes the use of renewable geothermal heat from the ground. A fluid is pumped into a small pipe network in an external layer of a wall construction that is linked to a ground heat source. This decouples the building from the outside temperature, therefore eliminating large peak demands and reducing the primary energy demand. Our steady-state analysis shows that at a design temperature of −10 °C the 6 cm thick active insulation system has equivalent performance to 11 cm of passive insulation. Our comparison of heating performance of a building with our active insulation system versus a building with static insulation of the same thickness shows a 15% reduction in annual electricity demand, and thus exergy input. We present an overview of the operation and analysis of our low exergy concept and its modeled performance.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
MDPI
en_US
dc.rights.uri
http://creativecommons.org/licenses/by-nc-sa/3.0/
dc.subject
Buildings
en_US
dc.subject
Insulation
en_US
dc.subject
Geothermal
en_US
dc.subject
Ground heat
en_US
dc.subject
Heat pumps
en_US
dc.subject
Exergy
en_US
dc.title
An Innovative Use of Renewable Ground Heat for Insulation in Low Exergy Building Systems
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported
dc.date.published
2012-08-20
ethz.journal.title
Energies
ethz.journal.volume
5
en_US
ethz.journal.issue
8
en_US
ethz.pages.start
3149
en_US
ethz.pages.end
3166
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.publication.place
Basel
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
03724 - Leibundgut, Hansjürg
en_US
ethz.leitzahl.certified
03724 - Leibundgut, Hansjürg
ethz.date.deposited
2017-06-10T08:37:42Z
ethz.source
ECIT
ethz.identifier.importid
imp59364fba06eb265557
ethz.ecitpid
pub:89055
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2017-07-18T10:51:05Z
ethz.rosetta.lastUpdated
2019-06-18T15:35:38Z
ethz.rosetta.exportRequired
true
ethz.rosetta.versionExported
true
ethz.COinS
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