Exergy-Based and Economic Evaluation of Liquefaction Processes for Cryogenics Energy Storage
dc.contributor.author | Hamdy, Sarah | |
dc.contributor.author | Moser, Francisco | |
dc.contributor.author | Morosuk, Tatiana | |
dc.contributor.author | Tsatsaronis, George | |
dc.date.accessioned | 2019-08-26T12:55:05Z | |
dc.date.available | 2019-08-26T12:55:05Z | |
dc.date.issued | 2019-02-04 | |
dc.date.updated | 2019-08-24T18:43:07Z | |
dc.description.abstract | Cryogenics-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.eissn | 1996-1073 | |
dc.identifier.uri | https://depositonce.tu-berlin.de/handle/11303/9895 | |
dc.identifier.uri | http://dx.doi.org/10.14279/depositonce-8907 | |
dc.language.iso | en | en |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | en |
dc.subject.ddc | 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten | de |
dc.subject.other | cryogenic energy storage | en |
dc.subject.other | air liquefaction | en |
dc.subject.other | exergy analysis | en |
dc.subject.other | economic analysis | en |
dc.subject.other | exergoeconomic analysis | en |
dc.title | Exergy-Based and Economic Evaluation of Liquefaction Processes for Cryogenics Energy Storage | en |
dc.type | Article | en |
dc.type.version | publishedVersion | en |
dcterms.bibliographicCitation.articlenumber | 493 | en |
dcterms.bibliographicCitation.doi | 10.3390/en12030493 | en |
dcterms.bibliographicCitation.issue | 3 | en |
dcterms.bibliographicCitation.journaltitle | Energies | en |
dcterms.bibliographicCitation.originalpublishername | MDPI | en |
dcterms.bibliographicCitation.originalpublisherplace | Basel | en |
dcterms.bibliographicCitation.volume | 12 | en |
tub.accessrights.dnb | free | en |
tub.affiliation | Fak. 3 Prozesswissenschaften>Inst. Energietechnik>FG Energietechnik und Umweltschutz | de |
tub.affiliation.faculty | Fak. 3 Prozesswissenschaften | de |
tub.affiliation.group | FG Energietechnik und Umweltschutz | de |
tub.affiliation.institute | Inst. Energietechnik | de |
tub.publisher.universityorinstitution | Technische Universität Berlin | en |
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