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Your search keyword '"Papadopoulos, Athanasios I."' showing total 6 results
Start Over Author "Papadopoulos, Athanasios I." Journal industrial & engineering chemistry research
6 results on '"Papadopoulos, Athanasios I."'

3. Phase-Change Solvents and Processes for Postcombustion CO2Capture: A Detailed Review

Author

Papadopoulos, Athanasios I., Tzirakis, Fragkiskos, Tsivintzelis, Ioannis, and Seferlis, Panos

Abstract

This work reviews research activities in the development of phase-change CO2capture solvents and processes. The focus is on liquid–liquid phase-change solvents in which the CO2-lean phase can be recycled to the absorber prior to regeneration hence the energy demands may be substantially decreased compared to nonphase change processes. The review briefly provides the basic chemical and physical principles required to understand the phase-change behavior in postcombustion CO2capture systems. The reviewed work is further organized per different solvent type into major sections including experimental property measurement studies, experimental pilot plant studies, thermodynamic and kinetic modeling studies, as well as process modeling and technoeconomic assessment studies. In all sections we provide details regarding experimental approaches, operating conditions of pilot plants, implementations in different industries, and performance data. Key findings include operating observations and performance indicators regarding the investigated solvents and processes as well as a substantiated estimation of their technology readiness level.

Published
2019
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4. Toward Optimum Working Fluid Mixtures for Organic Rankine Cycles using Molecular Design and Sensitivity Analysis

Author

Papadopoulos, Athanasios I., Stijepović, Mirko, Linke, Patrick, Seferlis, Panos, Voutetakis, Spyros, Papadopoulos, Athanasios I., Stijepović, Mirko, Linke, Patrick, Seferlis, Panos, and Voutetakis, Spyros

Abstract

This work presents a Computer-Aided Molecular Design (CAMD) method for the synthesis and selection of binary working fluid mixtures used in Organic Rankine Cycles (ORC). The method consists of two stages, initially seeking optimum mixture performance targets by designing molecules acting as the first component of the binaries. The identified targets are subsequently approached by designing the required matching molecules and selecting the optimum mixture concentration. A multiobjective formulation of the CAMD-optimization problem enables the identification of numerous mixture candidates, evaluated using an ORC process model in the course of molecular mixture design. A nonlinear sensitivity analysis method is employed to address model-related uncertainties in the mixture selection procedure. The proposed approach remains generic and independent of the considered mixture design application. Mixtures of high performance are identified simultaneously with their sensitivity characteristics regardless of the employed property prediction method.

Published
2013

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