Investigating the effect of channel angle of a subsonic MHD (Magneto-Hydro-Dynamic) generator on optimum efficiency of a triple combined cycle

An Enhanced Solar Hybrid Brayton and Rankine Cycles with Integrated Magnetohydrodynamic Conversion System for Electrical Power Generation

“…The net powers obtained were respectively 3.8 MWe, 11.6 MWe and 11.8 MWe, with an efficiency rate of 30.43%. It can be argued that the Laval nozzle generator shape created different structural positions for the magnets, which had affected the distribution of the magnetic flux density in the generator channel (Khalili et al 2015). It could also be due to the velocity magnitude in the current study which is increased in three-fold.…”

“…In both studies, an MHD generator unit is coupled to a triple combined cycle plant. The major difference is that a linear MHD is incorporated as a bottom unit in the current study, while a de Laval nozzle shape was incorporated as a topping unit by Khalili et al (2015). When comparing the two systems, the power output is significantly higher in the present study.…”

“…The MHD generator modelling results obtained in the present study are compared to those reported by Khalili et al (2015). In both studies, an MHD generator unit is coupled to a triple combined cycle plant.…”

“…In the present study, the generator is linear (inlet velocity of 2131 m/s, Mach number of 2.44, conductivity of 10 S/m, magnetic field of 2.5 T) and produces a net power of 71 MWe with a conversion efficiency rate of 50%. In Khalili et al (2015), the generator was analysed with an inlet velocity of 701.71 m/s (Mach number = 0.7), a conductivity of 20 S/m and a magnetic field of 4 T at three diverging angles (0 o , 2.85 o and 5.70 o ). The net powers obtained were respectively 3.8 MWe, 11.6 MWe and 11.8 MWe, with an efficiency rate of 30.43%.…”

Performance evaluation of a mercury-steam combined-energy-generation system (MES)

“…Zeyghami asserted that the efficiencies of the binary geothermal‐power cycles could be increased up to 0.48 with R‐152a, 0.55 with Butane, and 0.58 with Cis‐butane. Khalili et al simulated subsonic flow in a magneto hydrodynamic generator and investigated the influences of it on the power output and efficiency of a combined cycle, which has triple stage. The magneto hydrodynamic generator increased the efficiency up to 71.32%.…”