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Title Modeling and Optimization of Biomass Gasification System
Author Carlassara, Luca
Supervisor Rokni, Masoud (Thermal Energy Systems, Department of Mechanical Engineering, Technical University of Denmark, DTU, DK-2800 Kgs. Lyngby, Denmark)
Institution Technical University of Denmark, DTU, DK-2800 Kgs. Lyngby, Denmark
Thesis level Master's thesis
Year 2009
Abstract Modeling and optimization of biomass gasification system by Luca Carlassara, supervisor Masoud Rokni, external supervisor Thomas Norman (B&W Vølund), Department of Mechanical Engineering, Technical University of Denmark, Lyngby, Denmark. Background: biomass gasification is an energy conversion method suitable for power production and is a sustaniable csolution thanks to its carbon neutrality. In this work a Biomass Integrated Gasification Combined Cycle plant (BIGCC) is studied. The fuel consist of wood chips. The top and bottom cycle are respectively a gas turbine and a Rankine cycle. The plant size is set to 5MW electrical power. The system modeled, using the software DNA, and optimized in order to achieve higher efficiency. Results: The optimization is carried out changing the bottom cycle parameters and proposing major improvements. The overall efficiency (LHV) of the first configuration, which uses a simple steam cycle, is equal to 40,3%. In the second configuartion reheating is implemented and the efficiency raises to 40,8%. Conclusions. The study expresses the advantages of this kind of plant: a small combined plant, carbon neutral, without need for external water supply and with high electrical efficiency, improved by the optimization.
Imprint Technical University of Denmark (DTU) : Kgs. Lyngby, Denmark
Keywords Biomass; gasification; integrated; Combined Cycle; wood chips; optimization; IBGCC; steam cycle
Fulltext
Original PDF Modeling_and_optimization_of_biomass_gasification_systems.pdf (1.68 MB)
Admin Creation date: 2009-09-17    Update date: 2009-11-04    Source: dtu    ID: 250141    Original MXD