Abstract:
The present work aims to evaluate the thermal efficiency variation of a combined potency cycle (gas-steam), when the enrichment of oxidant current with oxygen, by nitrogen adsorption remotion, in PSA system (Pressure Swing Adsorption). As a main result, it was found that the thermal efficiency of the combined cycle increases 7,5% when the oxygen concentration in the comburent gas increases from 21% to 50%, while the available energy for cogeneration is reduced for approximately 32%. The thermal efficiency variation is due to the effects on potence generation systems, where the gas system has a reduction of approximately 9% in the potence developed while the steam potency system has an increase of around 100%. The increase of steam potency system is mainly due to elevated works pressure reached in superheated steam due to high energy supplied by the gases leaving the steam turbine. However, it is observed that the necessary potency required to water pumping in the steam cycle increases in level of 400%, resulting from pumping up to higher pressures.
Reference:
ARAUJO, Albério Belarmino de; ALDEIA, Wagner. Análise de ciclo combinado gás-vapor empregando metano com comburente enriquecido com oxigênio. Revista IPT, Tecnologia e Inovação, v.6, n.21, p.37-74, dez., 2022.
Access to the article on the Journal’s website:
http://revista.ipt.br/index.php/revistaIPT/article/view/145/201
The present work aims to evaluate the thermal efficiency variation of a combined potency cycle (gas-steam), when the enrichment of oxidant current with oxygen, by nitrogen adsorption remotion, in PSA system (Pressure Swing Adsorption). As a main result, it was found that the thermal efficiency of the combined cycle increases 7,5% when the oxygen concentration in the comburent gas increases from 21% to 50%, while the available energy for cogeneration is reduced for approximately 32%. The thermal efficiency variation is due to the effects on potence generation systems, where the gas system has a reduction of approximately 9% in the potence developed while the steam potency system has an increase of around 100%. The increase of steam potency system is mainly due to elevated works pressure reached in superheated steam due to high energy supplied by the gases leaving the steam turbine. However, it is observed that the necessary potency required to water pumping in the steam cycle increases in level of 400%, resulting from pumping up to higher pressures.
Reference:
ARAUJO, Albério Belarmino de; ALDEIA, Wagner. Análise de ciclo combinado gás-vapor empregando metano com comburente enriquecido com oxigênio. Revista IPT, Tecnologia e Inovação, v.6, n.21, p.37-74, dez., 2022.
Access to the article on the Journal’s website:
http://revista.ipt.br/index.php/revistaIPT/article/view/145/201
