Recent progress of the CFAR (Compact Fusion Advanced Rankine) cycle concept for a D-T tokamak reactor is presented with emphasis on how an enthalpy extraction can be achieved with a nonequilibrium disk-type MHD (magnetohydrodynamic) generator. For the gas stagnation temperatures of 3000 K, enthalpy extraction in excess of 50% is found to be achievable, leading to a 40% overall plant efficiency when a recuperative heat cycle and recently advanced thermoelectric converters are adopted. About a 6-ton/s mercury flow is required to remove fusion energy while achieving the 3000-K gas stagnation temperature prior to the MHD generator. Studies of plasma parameters in the steady-state operation regime subject to plasma physics constraints, the minimum power in the start-up phase required for ignition, effects of the MHD magnet on the plasma-confining magnetic fields, neutron and microwave superheat, and mercury corrosion test of ceramic rods for 2000 h are also described.
|Number of pages||4|
|Publication status||Published - 1989|
|Event||Proceedings - IEEE Thirteenth Symposium on Fusion Engineering Part 2 (of 2) - Knoxville, TN, USA|
Duration: 1989 Oct 2 → 1989 Oct 6
|Conference||Proceedings - IEEE Thirteenth Symposium on Fusion Engineering Part 2 (of 2)|
|City||Knoxville, TN, USA|
|Period||89/10/2 → 89/10/6|