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Título
Thermodynamic simulation of a multi-step externally fired gas turbine powered by biomass
Autor(es)
Materia
Externally fired gas turbine
Thermal energy engineering
Open Brayton cycle
Solid biomass fuel
High temperature heat exchanger
Fecha de publicación
2017
Editor
Elsevier Science Publishers (Amsterdam, Países Bajos)
Citación
Durante, A; Pena-Vergara, G; Curto-Risso, P.L; Medina, A; Calvo Hernández, A. (2017). Thermodynamic simulation of a multi-step externally fired gas turbine powered by biomass. Energy Conversion and Management,140, pp. 182-191
Resumen
[EN]A thermodynamic model for a realistic Brayton cycle, working as an ex-
ternally red gas turbine fueled with biomass is presented. The use of an
external combustion chamber, allows to burn dirty fuels to preheat pure air,
which is the working
uid for the turbine. It also avoids direct contact of
ashes with the turbine blades, resulting in a higher life cycle for the turbine.
The model incorporates a high temperature heat exchanger and an arbitrary
number of turbines and compressors, with the corresponding number of in-
tercoolers and reheaters. It considers irreversibilities such as non-isentropic
compressions and expansions, and pressure losses in heat input and release.
The composition and temperature of the combustion gases, as well as the
variable
ow rate of air and combustion gases, are calculated for speci c
biomasses. The numerical model for a single stage con guration has been
validated by comparing its predictions with the data sheets of two commer-
cial turbines. Results are in good agreement. Curves on the dependence
of thermal e ciency and power output with the overall pressure ratio will
be shown for several plant con gurations with variable number of compres-
sion/expansion stages. Also the in
uence of di erent types of biomasses and
their moisture will be analyzed on parameters such as fuel consumption and
exhaust gases temperature.
URI
ISSN
0196-8904
DOI
10.1016/j.enconman.2017.02.050
Versión del editor
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- GIOETFE. Artículos [48]