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Optimal coupling of waste and concentrated solar for the constant production of electricity over a year
Author(s) -
Fuente Ester,
Martín Mariano
Publication year - 2019
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.16559
Subject(s) - brayton cycle , flue gas , rankine cycle , waste management , combined cycle , electricity generation , biogas , process engineering , degree rankine , electricity , environmental science , power station , engineering , turbine , environmental engineering , power (physics) , mechanical engineering , electrical engineering , thermodynamics , physics
In this article, a biogas‐based Brayton cycle is integrated with a concentrated solar power facility. The gas turbine hot flue gas and the molten salts are used to generate steam for the regenerative Rankine cycle. The process model is solved as a nonlinear optimization problem within a multiperiod scheme to decide on the contribution of the energy resources and the operating conditions of the facility to meet a certain demand of power over a year mitigating the absence of solar availability. The steam turbine is responsible for power production while the gas turbine works mainly as a combustion chamber. In the South of Spain, an excess of biogas is available during summer yielding a production cost of electricity of 0.17 €/kWh with an investment of 380 M€ for a production facility of 25 MW. This plant is not yet economic.