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ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
THE EFFECTS OF BURNING ALCOHOL FUELS IN FUEL FLEXIBLE ANNULAR GAS TURBINE COMBUSTORS ON THE OVERALL OPERATING CONDITIONS
Submission Author:
Washington Orlando Irrazabal Bohorquez , MG
Co-Authors:
Washington Orlando Irrazabal Bohorquez, João Pedro Dutra, Carlos Martinez-Bazan, FERNANDO CRUZ-PERAGÓN, Cándido Gutiérrez-Montes
Presenter: Washington Orlando Irrazabal Bohorquez
doi://10.26678/ABCM.ENCIT2020.CIT20-0485
Abstract
Renewable fuels, emissions and fuel flexibility are being subject of research these days, with high priority given to these topics. Much research is being carried out in this field, aiming at the design and development of gas turbine combustors to successfully burn conventional and renewable fuels. In particular, in this work the overall operating conditions and performance characteristics of an annular gas turbine combustor using ethanol and methanol fuels were calculated numerically using in-house developed computer codes, based on direct fuel injection, diffusion flames, stability loops, reaction mechanisms and combustor loading parameter. The main characteristics of the annular combustor, the flammability curves for ethanol and methanol fuels, the temperature distribution and combustion efficiency along the length of the combustor, the stability loops for the combustor loading parameter and some combustion products at combustor exhaust are predicted and analyzed. The work indicates that air mass flow rate, fuel mass flow rate, pressure, combustion volume and type of used fuel have a paramount effect on the stability of the combustion process and combustion advancement in the combustor zones. It is also shown that the equivalence ratio in the primary zone has important influence on the stability performance of the gas turbine combustion chamber.
Keywords
Gas Turbine, Annular combustor, Alternative fuels, Loading parameter
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