Closed Cycle MHD for Central Station Power with Fossil or Nuclear Fuels.
Technical information series rept.,
GENERAL ELECTRIC CO PHILADELPHIA PA SPACE DIV
Pagination or Media Count:
A closed cycle MHD generator using a noble gas with alkali metal vapor as the working fluid, when used as a topping unit for a conventional steam plant, can yield cycle efficiencies in excess of 60 at peak stagnation temperature of 3000F. While high enough for substantial gains in thermodynamic efficiency, this temperature is relatively low for an electrically conducting gas and conductivity is achieved by decoupling electron temperature from gas temperature. A ceramic regenerative heat exchanger supplies thermal energy to the working fluid. The latter can be any clean fossil fuel, preferably low BTU about 150 BTUSCF coal gas. With multi-stage combustion, pulverized coal is also a possible fuel. On a long range basis, closed cycle MHD is ideally suited for high temperature gas cooled fission reactors and probably also to fusion reactors. The closed cycle MHD generator is adaptable to the Brayton cycle, the regenerative Brayton cycle and eventually the Rankine cycle. Author
- Electric Power Production and Distribution
- Plasma Physics and Magnetohydrodynamics