Cascaded dual-loop organic Rankine cycle with alkanes and low global warming potential refrigerants as working fluids

dc.contributor.authorAbbas, Wameedh Khider Abbas
dc.contributor.authorVrabec, Jadran
dc.date.accessioned2022-02-07T14:15:59Z
dc.date.available2022-02-07T14:15:59Z
dc.date.issued2021-10-21
dc.description.abstractA cascaded dual-loop organic Rankine cycle (CD-ORC) consisting of a high-temperature ORC (HT-ORC) and a low-temperature ORC (LT-ORC) with a shared heat exchanger is studied. Thermal efficiency is investigated as a key indicator for system performance over a wide range of heat source temperature ranging from 170 °C to 330 °C. The relation between the thermal efficiency and the critical temperature of the working fluids is explored. For this purpose, six alkanes and 31 refrigerants with a low GWP (≤150) are considered as working fluids in the HT-ORC and the LT-ORC, respectively. Cyclohexane and cyclopentane are found to be suitable for the HT-ORC with a maximum thermal efficiency of 19.13% and 18.03%. The thermal efficiency of both loops is highly affected by the working fluids since it increases with the critical temperature. As a whole, the CD-ORC may achieve a total thermal efficiency of 25.24%, 24.88% and 24.60% when using the working fluid combinations cyclohexane-R1366mzz(Z), cyclohexane-R1233zd(E) or cyclohexane-butane. This indicates that low GWP refrigerants are well-suited for LT-ORC. Compared to regular ORC, CD-ORC systems may achieve a thermal efficiency that is better by around a quarter.en
dc.identifier.eissn1879-2227
dc.identifier.issn0196-8904
dc.identifier.urihttps://depositonce.tu-berlin.de/handle/11303/16302
dc.identifier.urihttp://dx.doi.org/10.14279/depositonce-15077
dc.language.isoenen
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.ddc660 Chemische Verfahrenstechnikde
dc.subject.othercascaded dual-loop ORCen
dc.subject.otherlow GWP refrigerantsen
dc.subject.otherthermal efficiencyen
dc.subject.othercritical temperature of working fluidsen
dc.titleCascaded dual-loop organic Rankine cycle with alkanes and low global warming potential refrigerants as working fluidsen
dc.typeArticleen
dc.type.versionacceptedVersionen
dcterms.bibliographicCitation.articlenumber114843en
dcterms.bibliographicCitation.doi10.1016/j.enconman.2021.114843en
dcterms.bibliographicCitation.journaltitleEnergy Conversion and Managementen
dcterms.bibliographicCitation.originalpublishernameElsevieren
dcterms.bibliographicCitation.originalpublisherplaceAmsterdamen
dcterms.bibliographicCitation.volume249en
tub.accessrights.dnbdomain*
tub.affiliationFak. 3 Prozesswissenschaften>Inst. Prozess- und Verfahrenstechnik>FG Thermodynamik und Thermische Verfahrenstechnikde
tub.affiliation.facultyFak. 3 Prozesswissenschaftende
tub.affiliation.groupFG Thermodynamik und Thermische Verfahrenstechnikde
tub.affiliation.instituteInst. Prozess- und Verfahrenstechnikde
tub.publisher.universityorinstitutionTechnische Universität Berlinen
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