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dc.contributor.author
Becattini, Viola
dc.contributor.author
Haselbacher, Andreas
dc.date.accessioned
2019-05-06T10:03:54Z
dc.date.available
2019-05-04T01:12:25Z
dc.date.available
2019-05-06T10:03:54Z
dc.date.issued
2019-08-01
dc.identifier.issn
0306-2619
dc.identifier.issn
1872-9118
dc.identifier.other
10.1016/j.apenergy.2019.03.022
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/340637
dc.identifier.doi
10.3929/ethz-b-000340637
dc.description.abstract
Placing an encapsulated phase-change material (PCM) on top of a packed bed of sensible filler material is an effective way of reducing the drop in the heat-transfer fluid (HTF) outflow temperature during discharging associated with a sensible thermal-energy storage (TES). So far, the literature lacks guidelines for the design of a combined sensible/latent TES. This study aims at developing a new method for the design of combined TES based on non-dimensional analysis. The method will provide a designer with non-dimensional plots, produced from quasi-steady-state results of simulations with a one-dimensional model, that relate performance parameters to geometrical, thermophysical, and operational parameters of the combined TES. In this paper, a simplified version of the method is demonstrated that allows the selection of a metallic PCM and its amount such that a specified drop in the HTF outflow temperature is attained during discharging, assuming a fixed sensible section of natural rocks and air as HTF. The plots show that the drop in the outflow temperature during discharging is minimized by selecting a PCM with a melting temperature equal to 98% of the HTF inflow temperature during charging. The plots also show that the heat of fusion, provided it exceeds a threshold, has a subordinate effect on the drop in the outflow temperature. Finally, the plots show that a smaller heat of fusion can be compensated with a larger height of the latent section. The method is illustrated with a specific example.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Elsevier
en_US
dc.rights.uri
http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject
Thermal-energy storage
en_US
dc.subject
Sensible storage
en_US
dc.subject
Latent storage
en_US
dc.subject
Phase-change material
en_US
dc.subject
Design
en_US
dc.subject
Simulation
en_US
dc.title
Toward a new method for the design of combined sensible/latent thermal-energy storage using non-dimensional analysis
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
dc.date.published
2019-04-17
ethz.journal.title
Applied Energy
ethz.journal.volume
247
en_US
ethz.journal.abbreviated
Appl. Energy
ethz.pages.start
322
en_US
ethz.pages.end
334
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.grant
Design and Optimization of High-Temperature Combined Sensible/Latent-Heat Storage
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
New York, NY
en_US
ethz.publication.status
published
en_US
ethz.grant.agreementno
153776
ethz.grant.fundername
SNF
ethz.grant.funderDoi
10.13039/501100001711
ethz.grant.program
NFP 70: Gesuch
ethz.date.deposited
2019-05-04T01:12:42Z
ethz.source
SCOPUS
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2019-05-06T10:04:07Z
ethz.rosetta.lastUpdated
2021-02-15T04:28:49Z
ethz.rosetta.versionExported
true
ethz.COinS
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