NDLI: Thermodynamic and Economic Investigation of an Improved Graz Cycle Power Plant for CO2 Capture

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Sanz, W. Jericha, H. Moser, M. Heitmeir, F.
Copyright Year	2004
Abstract	Introduction of closed cycle gas turbines with their capability of retaining combustion generated CO2 can offer a valuable contribution to the Kyoto goal and to future power generation. Therefore research and development at Graz University of Technology since the 90’s has lead to the Graz Cycle, a zero emission power cycle of highest efficiency. It burns fossil fuels with pure oxygen which enables the cost-effective separation of the combustion CO2 by condensation. The efforts for the oxygen supply in an air separation plant are partly compensated by cycle efficiencies far higher than 60%. In this work a further development, the S-Graz Cycle is presented, which works with a cycle fluid of high steam content. Thermodynamic investigations show efficiencies up to 70% and a net efficiency of 60% including the oxygen supply. For a 100 MW prototype plant the layout of the main turbo-machinery is performed to show the feasibility of all components. Finally, an economic analysis of a S-Graz Cycle power plant is performed showing very low CO2 mitigation costs in the range of 10 $/ton CO2 captured, making this zero emission power plant a promising technology in the case of a future CO2 tax.
Sponsorship	International Gas Turbine Institute
Starting Page	409
Ending Page	418
Page Count	10
File Format	PDF
ISBN	0791841723
DOI	10.1115/GT2004-53722
e-ISBN	0791837394
Volume Number	Volume 7: Turbo Expo 2004
Conference Proceedings	ASME Turbo Expo 2004: Power for Land, Sea, and Air
Language	English
Publisher Date	2004-06-14
Publisher Place	Vienna, Austria
Access Restriction	Subscribed
Subject Keyword	Cycles Economic analysis Oxygen Carbon dioxide Closed-cycle gas turbines Thermodynamic power cycles Turbomachinery Combustion Fossil fuels Separation (technology) Condensation Emissions Fluids Industrial research Steam Energy generation Power stations Carbon capture and storage Engineering prototypes
Content Type	Text
Resource Type	Article

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