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Research Papers: Energy Systems Analysis

Assessment of a Power Plant With CO2 Capture Using an Advanced Exergoenvironmental Analysis

[+] Author and Article Information
Fontina Petrakopoulou

Unit of Environmental Science and Technology,
Zographou Campus,
Iroon Politechneiou 9,
11573 Athens,
National Technical University of Athens,
Athens, Greece;
School of Production Engineering and Management,
University Campus,
73100 Chania,
National Technical University of Crete,
Crete, Greece
e-mail: f.petrakopoulou@chemeng.ntua.gr

George Tsatsaronis, Tatiana Morosuk

Institute for Energy Engineering,
Marchstr. 18,
Technische Universität Berlin,
Berlin 10587, Germany

1Corresponding author.

Contributed by the Advanced Energy Systems Division of ASME for publication in the JOURNAL OF ENERGY RESOURCES TECHNOLOGY. Manuscript received August 21, 2013; final manuscript received September 19, 2013; published online November 26, 2013. Editor: Hameed Metghalchi.

J. Energy Resour. Technol 136(2), 022001 (Nov 26, 2013) (7 pages) Paper No: JERT-13-1248; doi: 10.1115/1.4025715 History: Received August 21, 2013; Revised September 19, 2013

This paper presents an evaluation of the environmental performance of an advanced zero emission plant (AZEP) including CO2 capture. The evaluation is conducted with the aid of an advanced exergoenvironmental analysis. The results are compared with those of a reference combined-cycle power plant without CO2 capture. Advanced exergy-based methods are used to (a) quantify the potential for improving individual components or overall systems, and (b) reveal detailed interactions among components—two features not present in conventional analyses, but very useful, particularly when evaluating complex systems. In an advanced exergoenvironmental analysis, the environmental impacts calculated in a conventional exergoenvironmental analysis are split into avoidable/unavoidable (to evaluate the potential for component improvement) and endogenous/exogenous (to understand the interactions among components) parts. As in the reference plant, the potential for reducing the environmental impact of the AZEP has been found to be limited by the relatively low avoidable environmental impact associated with the thermodynamic inefficiencies of several of its components. However, although the environmental impacts for the majority of the components of the plant are related mainly to internal inefficiencies and component interactions are of secondary importance, there are strong interactions between the reactor and some other components.

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Figures

Grahic Jump Location
Fig. 1

Structure of the AZEP 85

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