Comparative Evaluation of Coal Synthesized Gas Combustion MHD • Gas Turbine • Steam Turbine Combined Power Plants

Carbon Dioxide Emission Free Power Generation System

“…= isentropic efficiency of MHD generator L MHD = heat loss in MHD generator T MHDin = inlet temperature of MHD generator T MHDout = outlet temperature of MHD generator L MHD = heat loss in MHD generator P MHDin = inlet pressure of MHD generator P MHDout = outlet pressure of MHD generator n = number of oxygen compressors C po = specific heat of oxygen at constant pressure T in = inlet temperature of oxygen compressor T out = outlet temperature of oxygen compressor P in = inlet pressure of oxygen compressor P out = outlet pressure of oxygen compressor ṁ o = mass flow rate of oxygen Q eo2 = electric power of oxygen compressors h 1 = inlet enthalpy of CO 2 compressors h 2 = outlet enthalpy of CO 2 compressors Q eco2 = electric power of CO 2 compressors Q in = combution energy of methane C p = specific heat of combustion gas at constant pressure γ o = adiabatic constant of oxygen η a = adiavatic efficiency of compressors η c = mechanical efficiency of compressors Q eGT = electric power generation of gas turbine η eGT = gas turbine efficiency η aGT = adiabatic efficiency of gas turbine L GT = heat loss in gas turbine γ = adiabatic constant of methane η c = mechanical efficiency of compressor T 0 = initial temperature of methane T = adiabatic flame temperature ṁ co2in = mass flow rate of injection CO 2 ṁ co2out = mass flow rate of flood CO 2 η e = energy efficiency of CO 2 EOR system η co2 = trapping ratio of CO 2 in the oil reservoior η t = adiabatic efficiency of combustor…”

“…The enthalpy extraction rate of the MHD generator is derived from Ref. (1). In this estimation, the temperature dependence on the enthalpy extraction of MHD generator is assumed the linearly approximation from these data.…”