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ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
SENSITIVITY OF THE BRAYTON CYCLE EFFICIENCY AND EMISSION PARAMETERS TO THE REGENERATOR EFFECTIVENESS THROUGH A NUMERICAL MODEL BASED ON EQUILIBRIUM CONSTANTS
Submission Author:
Augusto Bornschlegell , MS
Co-Authors:
André Henrique Ávila de Souza, Ricardo Ramos, Augusto Bornschlegell
Presenter: André Henrique Ávila de Souza
doi://10.26678/ABCM.ENCIT2020.CIT20-0375
Abstract
In a simple Brayton cycle, the combustion gases leave the turbine towards the atmosphere at high temperature, wasting energy that could be used. Thus, it is usual to implement mechanisms to take advantage of part of the energy that would be lost, improving the thermal efficiency of the cycle. The present work proposes a numerical model of a thermoelectric plant operating the Brayton cycle with recuperator and also considering combustion. The combustion products are modelled through chemical equilibrium. Computational modelling is implemented through Scilab © routines using real input data. Based on the results, a comparative study is carried out between the simple Brayton cycle and the recuperated Brayton cycle. Then, the sensitivity of the cycle thermal efficiency by varying the recuperator’s effectiveness is discussed, as well as the variation in the emission of pollutant gases.
Keywords
Brayton Cycle, regeneration, Thermodynamics, Combustion
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