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AuthorBhosale, Rahul R.
AuthorKumar, Anand
AuthorAlMomani, Fares
AuthorGhosh, Ujjal
AuthorDardor, Dareen
AuthorBouabidi, Zineb
AuthorAli, Manar
AuthorYousefi, Shiva
AuthorAlNouss, Ahmed
AuthorAnis, Mohammad Saad
AuthorUsmani, Mohammad Hamza
AuthorAli, Moustafa H.
AuthorAzzam, Reem S.
AuthorBanu, Aliya
Available date2021-04-08T09:00:45Z
Publication Date2016
Publication NameEnergy Conversion and Management
ResourceScopus
ISSN1968904
URIhttp://dx.doi.org/10.1016/j.enconman.2016.01.032
URIhttp://hdl.handle.net/10576/18106
AbstractThis paper reports the thermodynamic analysis of the solar methanothermal reduction of Sm2O3 for the co-production of Sm and syngas in (a) Sm-Syngas open cycle, and (b) Sm-Syngas closed cycle. As per the chemical thermodynamic equilibrium modeling, the conversion of Sm2O3 into Sm increase with the increase in the CH4/Sm2O3 ratio and 100% conversion is possible at 2528 K if CH4/Sm2O3 ratio is equal to 3 is used. Exergy efficiency analysis of both open and closed cycles indicate that the QSm2O3-reduction, Qsolar, Qre-radiation, and Qquench increases with the increase in the CH4/Sm2O3 ratio. Likewise, WFC-Ideal-1, QFC-Ideal-1, and HHVsyngas-1 also increases with the upsurge in the CH4/Sm2O3 ratio. Similar observations were realized in case of Sm-Syngas closed cycle. The ?exergy (33.91%) and ?solar-to-fuel (45.93%) of the Sm-Syngas open cycle was observed to be maximum in case of CH4/Sm2O3 ratio = 3. As one of the applications, Sm was utilized toward splitting of H2O and CO2 together for the production of syngas via Sm-Syngas closed cycle. At similar operating conditions, the ?exergy-closed (45.22%) and ?solar-to-fuel-closed (61.24%) of the Sm-Syngas closed cycle was observed to be higher as compared to the Sm-Syngas open cycle. Furthermore, it was observed that, these efficiency values can be increased significantly due to the utilization of higher values of C and recycling of the heat rejected by the quench unit and H2O/CO2 splitting reactor.
SponsorThe authors gratefully acknowledge the financial support provided by the Qatar University Internal Grant ( QUUG-CENG-CHE-14 ? 15-10 ).
Languageen
PublisherElsevier Ltd
SubjectExergy analysis
Methanothermal reduction
Samarium
Samarium sesquioxide
Solar energy
Syngas
Thermodynamics
TitleSolar co-production of samarium and syngas via methanothermal reduction of samarium sesquioxide
TypeArticle
Pagination413-422
Volume Number112
dc.accessType Abstract Only


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