Power Efficiency Characteristics of Magnetohydrodynamic Thermodynamic Gas Cycle
Authors: Mahmoud Huleihil
In this study, the performance of a thermodynamic gas cycle of magnetohydrodynamic (MHD) power generation is considered and presented in terms of power efficiency curves. The dissipation mechanisms considered include: fluid friction modeled by means of the isentropic efficiency of the compressor, heat transfer leakage directly from the hot reservoir to the cold heat reservoir, and constant velocity of the MHD generator. The study demonstrates that power and efficiency vanish at the extremes of both slow and fast operating conditions. These points are demonstrated on power efficiency curves and the locus of efficiency at maximum power and the locus of maximum efficiency. Qualitatively, the considered loss mechanisms have a similar effect on the efficiency at maximum power operation and on maximum efficiency operation, thus these efficiencies are reduced, even for small values of the loss mechanisms.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.3299711Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 389
 Ajith Krishnan, R. and Jinshah, B.S. (2013): Magnetohydrodynamic Power Generation, IJSRP. 3(6): 1-11.
 Sutton, G. W. (1962): The theory of magnetohydrodynamic power generators, Armed Services Technical Information Agency. Accession No. 296430: 1-215.
 Sheindlin, A. E., et al. (1979): Magneto hydrodynamic power generation, Nat. Resour. Forum. 3(2):133-145.
 Brogan, T. R. (1964): MHD power generation. IEEE Spectr. 1(2): 58-65.
 El Haj Assad, M. (2015): Thermodynamic Analysis of MHD Power Cycle, J Robot Mech Eng Resr 1(1).
 Fung; T. K., et al. (1980): An Alternate Approach to the Application of MHD Power Generation Technology in a Utility Environment. IEEE Transactions on Power Apparatus and Systems., PAS-99(3): 1306-1312.
 Smith, J. L. (1984): Magnetohydrodynamic Power Generation. NASA Technical Report NASA-TP-2331, NAS 1.60:2331. 1-31.
 Gordon, J.M/ and Huleihil, M. (1991): On optimizing maximum-power heat engines. J. Appl. Phys., 69(1): 1–7.
 Gordon, J.M. and Huleihil, M. (1992): General performance characteristics of real heat engines. J. Appl. Phys., 72(3): 829–837.
 Spring, K. H. (ed.) (1965). Direct generation of electricity. London; New York: Academic Press.
 Curzon, F.L. and Ahlborn, B. (1975): Efficiency of a Carnot engine at maximum power output. Am. J. Phys. 43(1): 22–24.
 Leff, H. S (1987): Thermal efficiency at maximum work output: New results for old heat engines. Am. J. Phys. 55(7): 603-610.