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Integration of Evaporative Gas Turbine with Oxy-Fuel Combustion for Carbon Dioxide Capture
KTH.
Mälardalen University, School of Sustainable Development of Society and Technology.ORCID iD: 0000-0003-0300-0762
2010 (English)In: International Journal of Green Energy, ISSN 1543-5075, E-ISSN 1543-5083, Vol. 7, no 6, p. 615-631Article in journal (Refereed) Published
Abstract [en]

This paper studied the integration of Evaporative Gas Turbine (EvGT) cycle with oxy-fuel combustion for CO2 capture. The impact of key parameters on system electrical efficiency, such as the oxygen purity, Water/Gas ratio (W/G) has been investigated concerning thermal efficiency. The performance of dry recycle and wet recycle also has be analyzed and compared. Simulation results shows that: (1) 97% can be considered as the optimum oxygen purity taking into account the trade-off between the air separation unit (ASU) consumption penalty of producing higher-purity oxygen and electrical efficiency; (2) there exists an optimum point of W/G for both EvGT and EvGT combined with oxy-fuel combustion CO2 capture technology; (3) dry recycle has a considerably higher electrical efficiency comparing with wet recycle, but more cooled water can be saved in the wet recycle. The performance of EvGT cycle was also compared to the combined cycle (CC) when CO2 capture was considered. The comparison shows that CC has a higher net power output and electrical efficiency than the EvGT cycle no matter if combined with oxy-fuel combustion CO2 capture technology or not.

Place, publisher, year, edition, pages
2010. Vol. 7, no 6, p. 615-631
Keywords [en]
Evaporative gas turbine, Humid air turbines, CO2 capture, Oxy-fuel combustion, Electrical efficiency
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:mdh:diva-20218DOI: 10.1080/15435075.2010.529405ISI: 000285198400004Scopus ID: 2-s2.0-78650217949OAI: oai:DiVA.org:mdh-20218DiVA, id: diva2:638462
Available from: 2013-07-30 Created: 2013-07-05 Last updated: 2017-12-06Bibliographically approved

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CiteExportLink to record
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  • apa
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