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A Comparative Analysis of Two Competing Mid-size Oxy-fuel Combustion Cycles

Författare och institution:
Egill Thorbergsson (Institutionen för tillämpad mekanik, Strömningslära); Tomas Grönstedt (Institutionen för tillämpad mekanik, Strömningslära); Majed Sammak (-); Magnus Genrup (-)
Publicerad i:
Proceedings of ASME Turbo Expo 2012: Power for Land, Sea and Air. June 11-15, 2012, Copenhagen, Denmark,
Publikationstyp:
Konferensbidrag, refereegranskat
Publiceringsår:
2012
Språk:
engelska
Fulltextlänk:
Fulltextlänk (lokalt arkiv):
Sammanfattning (abstract):
Conceptual turbine and compressor designs have been established for the semi-closed oxy-fuel combustion combined cycle and the Graz cycle. Real gas effects are addressed by extending cycle and conceptual design tools with a fluid thermodynamic and transport property database. Maximum compressor efficiencies are established by determining optimal values for stage loading, degree of reaction and number of compressor stages. Turbine designs are established based on estimates on achievable blade root stress levels and state of the art design parameters. The work indicates that a twin shaft geared compressor is needed to keep stage numbers to a feasible level. The Graz cycle is expected to be able to deliver around 3% net efficiency benefit over the semi-closed oxy-fuel combustion combined cycle at the expense of a more complex realization of the cycle.
Ämne (baseras på Högskoleverkets indelning av forskningsämnen):
TEKNIK OCH TEKNOLOGIER ->
Maskinteknik ->
Energiteknik
TEKNIK OCH TEKNOLOGIER ->
Maskinteknik ->
Strömningsmekanik och akustik ->
Strömningsmekanik
Nyckelord:
turbomachinery design, combined cycles, oxy-fuel combustion, carbon capture and storage, Graz cycle, Semi-closed Oxy-fuel Combustion Combined Cycle
Chalmers styrkeområden:
Energi
Postens nummer:
155979
Ingår i post nr:
Posten skapad:
2012-03-17 14:29
Posten ändrad:
2013-08-30 09:26

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