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dc.contributor.author Baloyi, J
dc.contributor.author Bello-Ochende, T
dc.contributor.author Meyer, JP
dc.date.accessioned 2017-02-03T08:32:15Z
dc.date.available 2017-02-03T08:32:15Z
dc.date.issued 2016-07
dc.identifier.citation Baloyi, J., Bello-Ochende, T. and Meyer, J.P. 2016. Wall heat flux influence on the thermodynamic optimisation of irreversibilities of a circulating fluidised bed combustor. In: 12th International conference on Heat Transfer, Fluid mechanics and Thermodynamics, 11-13 July 2016, Malaga, Spain en_US
dc.identifier.isbn 978-1-77592-124-0
dc.identifier.uri https://www.researchgate.net/publication/305496216_Wall_heat_flux_influence_on_the_thermodynamic_optimisation_of_irreversibilities_of_a_circulating_fluidised_bed_combustor
dc.identifier.uri http://hdl.handle.net/10204/8920
dc.description 12th International conference on Heat Transfer, Fluid mechanics and Thermodynamics, 11-13 July 2016, Malaga, Spain en_US
dc.description.abstract In the study the comparison of irreversibilities was done when the wall condition of the combustor was changed from adiabatic to negative heat flux, for incoming air temperature of 400 K. The reactant mixture of solid pitch pine wood fuel and air was varied from a rich to a lean mixture. A non-adiabatic non-premixed combustion model of a numerical code (ANSYS FLUENT 16.2) was used to simulate the combustion process where the solid fuel was modelled by using the ultimate analysis data. The irreversibilities generated were arrived at by computing the entropy generation rates due to the combustion and frictional pressure drop processes. For the combustor where the wall condition was changed from adiabatic to negative heat flux (that is heat leaving the system) the minimum irreversibilities generated changed from occurring at an equivalence ratio of 1.67 for an adiabatic wall condition to 1.34 for a negative heat flux wall condition. It was also found that the penalty paid when deviating from the equivalence ratio of 1 at which minimum irreversibilities are generated is drastically increased due to less heat in the combustor resulting more unburnt fuel exiting the combustor. en_US
dc.language.iso en en_US
dc.relation.ispartofseries Wokflow;17501
dc.subject Irreversibilities comparison en_US
dc.subject Wall heat flux influence en_US
dc.subject Fluidised bed combustors en_US
dc.title Wall heat flux influence on the thermodynamic optimisation of irreversibilities of a circulating fluidised bed combustor en_US
dc.type Presentation en_US


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