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Título
Seasonal thermodynamic prediction of the performance of a hybrid solar gas-turbine power plant
Autor(es)
Materia
Hybrid plants
Thermodynamic model
Variable solar irradiance
Global plant performance
Thermal energy engineering
Thermosolar gas-turbines
Fecha de publicación
2015-07
Resumen
[EN] An entirely thermodynamic model is developed for predicting the performance records of a solar hybrid gas turbine power plant with variable irradiance and ambient temperature conditions. The model considers a serial solar hybridization in those periods when solar irradiance is high enough. A combustion
chamber allows to maintain an approximately constant inlet temperature in the turbine ensuring a stable
power output. The overall plant thermal efficiency is written as a combination of the thermal efficiencies
of the involved subsystems and the required heat exchangers. Numerical values of model input parameters are taken from a central tower installation recently developed near Seville, Spain. Real data for irradiance
and external temperature are taken in hourly terms. The curves of several variables are obtained for representative days of all seasons: overall plant efficiency, solar subsystem efficiency, solar share, fuel
conversion rate, and power output. The fuel consumption assuming natural gas fueling is calculated and
the reduction in greenhouse emissions is discussed. The model can be applied to predict the daily and
seasonal evolution of the performance of real installations in terms of a reduced set of parameters.
URI
DOI
10.1016/j.enconman.2016.02.019
Colecciones
- GIOETFE. Artículos [53]