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Combined Oxy-fuel Magnetohydrodynamic Power Cycle

Oxy-fuel carbon capture in power plants is a relatively new concept aiming at reducing carbon dioxide emissions from the plants. This is achieved by burning the fossil fuel using oxygen as oxidizer with no nitrogen, thereby rendering the exhaust gases very rich in carbon dioxide (after condensing water vapor by cooling), which facilitates its capture for environmental or commercial purposes. Despite the worldwide interest in oxy-fuel carbon capture, its progress is at risk given the large energy needed to separate oxygen from air in order to provide the oxidizer, thereby hindering further progress of this concept toward large-scale applications. This paper focuses on alleviating this drawback of oxy-fuel combustion by making it more attractive through combining it with another concept, namely magnetohydrodynamic (MHD) power generators. The end product is a power plant operating on a combined cycle composed of a topping MHD ultra-high-temperature cycle with direct electricity extraction from plasma, followed by a bottoming steam cycle with conventional turbo-generators. Different design aspects and simplified technical analysis for the MHD generator are presented.
MHD, carbon capture, power plant, FOS: Physical sciences, Physics - Applied Physics, Applied Physics (physics.app-ph), 65Z05, oxy-fuel, magnetohydrodynamics, plasma
MHD, carbon capture, power plant, FOS: Physical sciences, Physics - Applied Physics, Applied Physics (physics.app-ph), 65Z05, oxy-fuel, magnetohydrodynamics, plasma
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