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dc.contributor.advisorHaugen, Nils Erland L
dc.contributor.advisorDitaranto, Mario
dc.contributor.authorGrabinski, Krzysztof Adam
dc.date.created2016-06-30
dc.date.issued2016
dc.identifierntnudaim:15962
dc.identifier.urihttp://hdl.handle.net/11250/2411561
dc.description.abstractWithin the scope of the work, selected chemical kinetics and combustion issues were investigated. The first part contains a study of high temperature plasma and its po- tential usage as a working fluid in the magnetohydrodynamic generator. The well established GRI 3.0 mechanism for methane combustion has been ex- tended to include electrons and ions from literature in order to evaluate the effect of oxy-fuel combustion on the production of these, hence their potential to generate a high enough conductivity for MHD applications. The results show, however, that it is highly unlikely to obtain, in the industrial environ- ment, naturally ionized plasma that could be applied as a working fluid in the effective MHD generator. Electron and ion concentration that defines electrical conductivity of the fluid is simply not high enough. In other words - without additional seeding that increases electrical conductivity, it would be very problematic (and expensive) for the MHD generator to function with naturally ionized combustion gasses. The pressure and temperature required to obtain naturally ionized plasma characterized by adequate parameters for the magnetohydrodynamic power plant are beyond the present industrial possibilities. The second part describes a chemiluminescence study of the excited species in various flame types. In this section of the work the previous mechanism has been further extended to include chemiluminescence reactions for OH*, CH* and CO 2 * from different literature sources. The mechanism has been validated against experiments in both premixed and diffusion flame config- urations. The obtained mechanism can be used to assess the potential for monitoring flames in oxy-fuel conditions. Conducted measurements proves the accuracy of the created mechanism in case of OH*, CH* and provides a groundwork for the future studies of chemiluminescence phenomena. The second part describes a chemiluminescence study of the excited species in various flame types. Many different variants of combustion mechanisms involving excited species were investigated, resulting in one, consistent set of reactions for chemically excited CH , OH and CO2. Conducted measurements prove the accuracy of the created mechanism and provides a groundwork for the future studies of chemiluminescence phenomena.
dc.languageeng
dc.publisherNTNU
dc.subjectEnergi og miljø, Termisk energi
dc.titleExperimental and numerical kinetic study on charged and excited species in oxyfuel combustion for CO2 capture
dc.typeMaster thesis


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