In this paper, an advanced zero emission plant using oxy-fuel combustion is presented and compared with a reference plant (a) without capture and (b) with capture via chemical absorption. A variation of the oxy-fuel plant with a lower capture percentage (85%) is also presented, in order to (1) evaluate the influence of capture on the overall performance and cost of the plant and (2) enable comparison at the plant-level with the conventional method for capture: chemical absorption with monoethanolamine. Selected results of an advanced exergetic analysis are also briefly presented to provide an overview of further development of evaluation methodologies, as well as deeper insight into power plant design. When compared with the reference case, the oxy-fuel plants with 100% and 85% captures suffer only a relatively small decrease in efficiency, essentially due to their more efficient combustion processes that make up for the additional thermodynamic inefficiencies and energy requirements. Investment cost estimates show that the membrane used for the oxygen production in the oxy-fuel plants is the most expensive component. If less expensive materials can be used for the mixed conducting membrane reactor used in the plants, the overall plant expenditures can be significantly reduced. Using the results of the exergoeconomic analysis, the components with the higher influence on the overall plant are revealed and possible changes to improve the plants are suggested. Design modifications that can lead to further decreases in the costs of electricity and capture, are discussed in detail. Overall, the calculated cost of electricity and the cost of avoided from the oxy-fuel plants are calculated to be competitive with those of chemical absorption.
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November 2011
Research Papers
Exergoeconomic Analysis of an Advanced Zero Emission Plant
Fontina Petrakopoulou,
Fontina Petrakopoulou
Institute for Energy Engineering,
e-mail: f.petrakopoulou@iet.tu-berlin.de
Technische Universität Berlin
, Marchstraße 18, Berlin 10587, Germany
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George Tsatsaronis,
George Tsatsaronis
Institute for Energy Engineering,
Technische Universität Berlin
, Marchstraße 18, Berlin 10587, Germany
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Tatiana Morosuk
Tatiana Morosuk
Institute for Energy Engineering,
Technische Universität Berlin
, Marchstraße 18, Berlin 10587, Germany
Search for other works by this author on:
Fontina Petrakopoulou
Institute for Energy Engineering,
Technische Universität Berlin
, Marchstraße 18, Berlin 10587, Germanye-mail: f.petrakopoulou@iet.tu-berlin.de
George Tsatsaronis
Institute for Energy Engineering,
Technische Universität Berlin
, Marchstraße 18, Berlin 10587, Germany
Tatiana Morosuk
Institute for Energy Engineering,
Technische Universität Berlin
, Marchstraße 18, Berlin 10587, GermanyJ. Eng. Gas Turbines Power. Nov 2011, 133(11): 113001 (12 pages)
Published Online: May 13, 2011
Article history
Received:
May 4, 2010
Revised:
January 12, 2011
Online:
May 13, 2011
Published:
May 13, 2011
Citation
Petrakopoulou, F., Tsatsaronis, G., and Morosuk, T. (May 13, 2011). "Exergoeconomic Analysis of an Advanced Zero Emission Plant." ASME. J. Eng. Gas Turbines Power. November 2011; 133(11): 113001. https://doi.org/10.1115/1.4003641
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