Design Analysis of 10kW Magnetohydrodynamic Generator using Off-gas Plasma

Abstract

The design variables of plasma based magnetohydrodynamic(MHD) generator is analyzed to produce electricity directly using the off-gas which is made by the thermal power generator. In the thermal power generator, the combustion gas is used for the making electricity through the gas-turbine system. The off-gas comes out after the 1st electric production, and this gas is used for generating 2nd electricity through the MHD generator. The plasma state off-gas is used to make electric conductivity at fluid, and its conductivity is increased to add the alkali metal seed. The magnetic field from the external magnet is applied to off-gas, and electricity is generated due to its conductivity and velocity. The magnetic flux density from magnet, electric conductivity from plasma and temperature are analyzed in terms of enthalpy extraction rate at the electric production condition of 10 kW.