DocumentCode :
2567120
Title :
OMACON liquid-metal MHD natural-gas-fired systems
Author :
Pierson, E.S. ; Berry, G.F.
Author_Institution :
Purdue Univ., Hammond, IN, USA
fYear :
1989
fDate :
6-11 Aug 1989
Firstpage :
1045
Abstract :
The results of an assessment of liquid-metal MHD (magnetohydrodynamics) for high-pressure offshore natural gas fields are presented. The optimized magnetohydrodynamic conversion (OMACON) system was selected for this study. Preliminary screening analyses for five OMACON cycles were conducted by computer simulations employing a lumped-component model of the OMACON MHD conversion module. The analyses identified the most attractive cycles and the parameter ranges of interest. A detailed model of the OMACON module was developed and used for limited analysis of three selected cycles. Preliminary capital cost estimates were generated. Of the three cycles, the OMACON pass through Brayton cycle has an efficiency approaching 80% because the expansion of the gas occurs with a relatively low temperature drop, and no gas compression is required. The efficiencies of the other two cycles are essentially comparable at approximately 41% at a temperature of 1200°F. The efficiencies of all three cycles could be improved by raising the top cycle temperatures by changing to higher quality materials. The performance and costs indicate that a combination of the pass through cycle and a dual-turbine Rankine open cycle should be attractive. It has a projected efficiency of 51% at 70 MWe output. The total power output can range up to approximately 525 MWe, consuming a total gas flow of 109 Sm3/yr, and the efficiency at that point is approximately 40%
Keywords :
heat engines; magnetohydrodynamic convertors; magnetohydrodynamic power plants; 1200 degF; 41 percent; 51 percent; 70 MW; Brayton cycle; OMACON MHD conversion; Rankine open cycle; computer simulations; costs; efficiency; heat engines; liquid-metal MHD natural-gas-fired systems; model; offshore natural gas fields; performance; Computer simulation; Costs; Magnetic analysis; Magnetohydrodynamic power generation; Modular construction; Natural gas; Particle separators; Performance loss; Power system economics; Power system reliability;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Energy Conversion Engineering Conference, 1989. IECEC-89., Proceedings of the 24th Intersociety
Conference_Location :
Washington, DC
Type :
conf
DOI :
10.1109/IECEC.1989.74596
Filename :
74596
Link To Document :
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