Exergy-Based and Economic Evaluation of Liquefaction Processes for Cryogenics Energy Storage

dc.contributor.authorHamdy, Sarah
dc.contributor.authorMoser, Francisco
dc.contributor.authorMorosuk, Tatiana
dc.contributor.authorTsatsaronis, George
dc.date.accessioned2019-08-26T12:55:05Z
dc.date.available2019-08-26T12:55:05Z
dc.date.issued2019-02-04
dc.date.updated2019-08-24T18:43:07Z
dc.description.abstractCryogenics-based energy storage (CES) is a thermo-electric bulk-energy storage technology, which stores electricity in the form of a liquefied gas at cryogenic temperatures. The charging process is an energy-intensive gas liquefaction process and the limiting factor to CES round trip efficiency (RTE). During discharge, the liquefied gas is pressurized, evaporated and then super-heated to drive a gas turbine. The cold released during evaporation can be stored and supplied to the subsequent charging process. In this research, exergy-based methods are applied to quantify the effect of cold storage on the thermodynamic performance of six liquefaction processes and to identify the most cost-efficient process. For all liquefaction processes assessed, the integration of cold storage was shown to multiply the liquid yield, reduce the specific power requirement by 50–70% and increase the exergetic efficiency by 30–100%. The Claude-based liquefaction processes reached the highest exergetic efficiencies (76–82%). The processes reached their maximum efficiency at different liquefaction pressures. The Heylandt process reaches the highest RTE (50%) and the lowest specific power requirement (1021 kJ/kg). The lowest production cost of liquid air (18.4 €/ton) and the lowest specific investment cost (<700 €/kWchar) were achieved by the Kapitza process.en
dc.identifier.eissn1996-1073
dc.identifier.urihttps://depositonce.tu-berlin.de/handle/11303/9895
dc.identifier.urihttp://dx.doi.org/10.14279/depositonce-8907
dc.language.isoenen
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en
dc.subject.ddc620 Ingenieurwissenschaften und zugeordnete Tätigkeitende
dc.subject.othercryogenic energy storageen
dc.subject.otherair liquefactionen
dc.subject.otherexergy analysisen
dc.subject.othereconomic analysisen
dc.subject.otherexergoeconomic analysisen
dc.titleExergy-Based and Economic Evaluation of Liquefaction Processes for Cryogenics Energy Storageen
dc.typeArticleen
dc.type.versionpublishedVersionen
dcterms.bibliographicCitation.articlenumber493en
dcterms.bibliographicCitation.doi10.3390/en12030493en
dcterms.bibliographicCitation.issue3en
dcterms.bibliographicCitation.journaltitleEnergiesen
dcterms.bibliographicCitation.originalpublishernameMDPIen
dcterms.bibliographicCitation.originalpublisherplaceBaselen
dcterms.bibliographicCitation.volume12en
tub.accessrights.dnbfreeen
tub.affiliationFak. 3 Prozesswissenschaften>Inst. Energietechnik>FG Energietechnik und Umweltschutzde
tub.affiliation.facultyFak. 3 Prozesswissenschaftende
tub.affiliation.groupFG Energietechnik und Umweltschutzde
tub.affiliation.instituteInst. Energietechnikde
tub.publisher.universityorinstitutionTechnische Universität Berlinen
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