Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.1/165
Título: A new combined joules supercritical rankine cycle exergetic analysis and optimization
Autor: Sousa, Nelson Manuel Santos
Palavras-chave: Energia
Caldeiras
Data: 2005
Editora: Portalegre
Citação: 1st International Congress of Energy and Environment Engineering and Management (CIIEM). - Portalegre, May 2005. - 4 p
Resumo: The application of a supercritical Rankine cycle in combined cycles does not happen in today’s thermoelectric power stations. Nevertheless, the most recent development in gas turbines, that allows a high efficiency and high exhaust gases temperatures, and the improvement of high pressure and temperature alloys, makes this cycle possible. This study’s intent is to prove the viability of this combined cycle, since it can break the 60% efficiency barrier, which is the plafond in actual power stations. To attain this target, several configurations for this cycle have been simulated, optimized and analyzed [1]. The simulations were done with the computational program IPSEpro [2] and the optimizations were effectuated with software developed for the effect, using the DFP method [3]. In parallel with the optimization that claims the cycle’s efficiency maximization, an exergetic analysis was also made [4] to all the cycle components. In opposite to what happens in subcritical combined cycles, it was demonstrated that in supercritical combined cycles the higher efficiency takes place with a single steam pressure in the heat recovery steam generator (HRSG).
URI: http://hdl.handle.net/10400.1/165
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