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Part Load Behavior of a Micro Gas Turbine Fed With Different Fuels
- Source :
- ASME Turbo Expo 2014: Turbine Technical Conference and Exposition GT2014, Düsseldorf, Germany, June 16-20, 2014, info:cnr-pdr/source/autori:R. Calabria, F. Chiariello, P. Massoli, F. Reale/congresso_nome:ASME Turbo Expo 2014: Turbine Technical Conference and Exposition GT2014/congresso_luogo:Düsseldorf, Germany/congresso_data:June 16-20, 2014/anno:2014/pagina_da:/pagina_a:/intervallo_pagine
- Publication Year :
- 2014
- Publisher :
- American Society of Mechanical Engineers, 2014.
-
Abstract
- The performance of a micro gas turbine in terms of global efficiency and exhaust emissions at different loads and methane-hydrogen blends has been experimentally studied. The load was varied from full load down to half load. A critical comparison between experimental data and results of the 3D CFD analysis of the combustor is discussed in order to study the effects of part load operation. Additional objective of the present study is to extend the numerical analysis of the combustor in order to describe the influence of a wider range of hydrogen concentrations in the fuel gas mixture. Numerical simulations were performed through the commercial code ANSYS CFX 14.5. Turbulence model adopted was the RSM RANS model, which ensures a good evaluation of effects of swirled turbulent flows in the combustion chamber. The oxidation of methane is simulated by using multistep kinetics models. They assure a better reproduction of CO emissions with load. Boundary and initial conditions were defined by using experimental data, when available, and results of numerical matching analysis, which assumes importance in case of absence of specific measurements at combustor inlet. Discussion of results is mainly focused on the variation in terms of exhaust gaseous emissions and temperature distributions in the combustor by varying load and fuel. A numerical evaluation of the MGT combustor behavior in critical conditions is also presented.Copyright © 2014 by ASME
- Subjects :
- Engineering
Turbulence
business.industry
Nuclear engineering
Mechanical engineering
Computational fluid dynamics
Methane
Experimental
chemistry.chemical_compound
Fuel gas
chemistry
Emissions
Range (aeronautics)
3D CFD
methane-hydrogen
Combustor
Combustion chamber
Reynolds-averaged Navier–Stokes equations
business
MICRO GAS TURBINE
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- Volume 1B: Marine; Microturbines, Turbochargers and Small Turbomachines; Steam Turbines
- Accession number :
- edsair.doi.dedup.....4df805ebe152f038938e2ac2e258c305