The Prospective Economics and Thermal Efficiency of Large Scale Open Cycle M.H.D. Stations

The overall thermal efficiency of several different fossil fuelled power stations is discussed using an m.h.d. generator and the conventional method of preheating the combustion with exhaust gases from the generator. Air preheat temperatures of between 1300 and 1700 degrees C are considered when ove...

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Bibliographic Details
Published in:Philosophical transactions of the Royal Society of London. Series A: Mathematical and physical sciences 1967-07, Vol.261 (1123), p.394-400
Main Authors: Kirillin, V. A., Rossievskii, G. I., Styrikovitch, M. A., Scheindlin, A. E.
Format: Article
Language:English
Subjects:
Capital costs
Cost efficiency
High temperature
Inlet temperature
Inlets
M.H.D. Cycles and Large Scale Experiments
Oxygen
Stagnation temperature
Steam
Steam turbines
Thermodynamic efficiency
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Summary:The overall thermal efficiency of several different fossil fuelled power stations is discussed using an m.h.d. generator and the conventional method of preheating the combustion with exhaust gases from the generator. Air preheat temperatures of between 1300 and 1700 degrees C are considered when over-all efficiencies of 51 and 61% may be attained. If the generator length is to be restricted to between 10 and 15 m in order to limit duct heat losses magnetic fields of 4 to 6 Wb/m$^{2}$ are required. The use of oxygen enrichment is found at present to be uneconomic but reacting methane with steam (an endothermic reaction) to give the fuel to be burnt is an attractive alternative process although not as good thermodynamically as air preheating. Economic considerations indicate that m.h.d. may only be useful for high cost fuels.
ISSN:1364-503X
0080-4614
1471-2962
DOI:10.1098/rsta.1967.0009