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Optimization of MHD generator based combined cycle efficiency

Saidi, M. H ; Sharif University of Technology | 2005

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  1. Type of Document: Article
  2. DOI: 10.1115/pwr2005-50113
  3. Publisher: American Society of Mechanical Engineers , 2005
  4. Abstract:
  5. Energy crisis has directed scientific efforts to increase the efficiency of power generation systems. Thermodynamic optimization of MHD (Magneto Hydrodynamic) generator based combined cycles due to their high operating temperatures may seriously reduce exergy destruction and improve the second law efficiency. In this research a combined cycle, comprising of MHD cycle as topping and gas turbine cycle as bottoming cycle has been simulated and analyzed and its pros and cons have been exposed. The first and second law efficiencies have been estimated from the operating pressures and temperatures of the system. To calculate the second law efficiency, the entropy generation of all components of the combined cycle has been parametrically calculated. Furthermore, the optimal pressure ratio and working temperature for both cycles are represented. The influence of pressure loss in pipeline and the effect of heat exchanger performance on the cycle efficiency have been considered as well. Copyright © 2005 by ASME
  6. Keywords:
  7. Gas turbines ; Heat exchangers ; Magnetohydrodynamics ; Combined cycle efficiency ; Energy crisis ; Pressure loss ; Combined cycle power plants
  8. Source: 2005 ASME Power Conference, Chicago, IL, 5 April 2005 through 7 April 2005 ; Volume PART B , 2005 , Pages 1209-1214 ; 0791841820 (ISBN); 9780791841822 (ISBN)
  9. URL: https://asmedigitalcollection.asme.org/POWER/proceedings-abstract/POWER2005/41820/1209/312001