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Item type:Publication, Access status: with files , Untersuchung der Teillastfahrweise von Oxyfuel-Kraftwerken(2025); This PhD thesis investigates the part load behaviour of oxyfuel power plants. With simulations the behaviour of the overall process for part load is analysed using the example of a hard coal fired oxyfuel power plant. The thesis focuses on the influences of the major plant components air separation unit, steam generator, two variants of the flue gas treatment unit and ingress of air.Publicationtype: Doctoral Thesis27 27 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: with files , Evaluation and comparison of the part load behaviour of the CO₂ capture technologies oxyfuel and post-combustionThe rising share of fluctuating renewable energies increasingly demand flexible and part load operation of fossil-fuelled power plants with and without CCS. In this work the part load behaviour of the Oxyfuel and the post-combustion CO₂capture processes are evaluated and compared. The net efficiency of the conventional hard-coal-fired power plant decreases from 45.2% at full load to 41.6% at 40% load. The net efficiency with post-combustion CO₂capture using 7 m MEA as solvent decreases to 34.7% at full load and 30.2% at 40% load. The Oxyfuel process reaches in turn a net efficiency of 36.6% at full load and 32.3% at 40% load and shows therefore a benefit of 1.9%-points at full load compared to the postcombustion CO₂capture with MEA. The efficiency advantage of the Oxyfuel process compared to the post-combustion CO₂capture process remains constant at part load.Publicationtype: Conference PaperScopus© Citations 8 304 283 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: with files , Semi-empirical model for the direct simulation of power plant with integrated post-combustion CO₂ capture processes by wet chemical absorptionIn this work, a semi-empirical column model is developed to represent post-combustion CO2capture processes with chemical solvents in coal-fired steam power plants. The solvents are represented by empirical correlations on the basis of fundamental measurement data (CO2 solubility, heat capacity, density). The model of a CO2 capture process including the column model is coupled to detailed models of a hard-coal-fired steam power plant and of a CO2 compressor to evaluate and compare the impact of CO2 capture on the overall power plant process using six different solvents.Publicationtype: Conference PaperScopus© Citations 11 322 418