Exergy analysis of combined cycle of gas turbine and solid oxide fuel cell in different compression ratios

  • Abstract
  • Keywords
  • References
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  • Abstract

    Due to the growing trend of energy consumption in the world uses of methods and new energy production systems with high efficiency and low emissions have been prioritized. Today, with the development of different systems of energy production, different techniques such as the use of solar energy, wind energy, fuel cells, micro turbines and diesel generators in cogeneration have been considered, each of these methods has its own advantages and disadvantages. Having a reliable energy generation system, inexpensive and availability the use of fuel cells as a major candidate has been introduced. Fuel cells converting chemical energy to electrical energy that today are one as a new technology in energy production are considered. In this paper fuel cell compression ratios 4, 4.1 and 4.2 at an ambient temperature of 298 K have been simulated and ultimately optimum ratio 4.1 for modeling has been selected. All components of cycle, including the stack of fuel cell, combustion chamber, air compressors, recuperator and gas turbine was evaluated from the viewpoint of exergy and exergy destruction rate was calculated by EES software.

  • Keywords

    Solid Oxide Fuel Cell; Gas Turbine; Combined Cycle; Exergy; Compression Ratio.

  • References

      [1] Veyo, Stephen E., et al. "Tubular Solid Oxide Fuel Cell/Gas Turbine Hybrid Cycle Power Systems—Status." ASME Turbo Expo 2000: Power for Land, Sea, and Air. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/2000-gt-0550.

      [2] Massardo, A. F., and F. Lubelli. "Internal reforming solid oxide fuel cell-gas turbine combined cycles (IRSOFC-GT): Part a—Cell model and cycle thermodynamic analysis." ASME 1998 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/98-gt-577.

      [3] Campanari, S., and E. Macchi. "Thermodynamic analysis of advanced power cycles based upon solid oxide fuel cells, gas turbines and rankine bottoming cycles." ASME 1998 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/98-gt-585.

      [4] Costamagna, P., L. Magistri, and A. F. Massardo. "Design and part-load performance of a hybrid system based on a solid oxide fuel cell reactor and a micro gas turbine." Journal of Power Sources 96.2 (2001): 352-368. http://dx.doi.org/10.1016/S0378-7753(00)00668-6.

      [5] Yang, W. J., et al. "Design performance analysis of pressurized solid oxide fuel cell/gas turbine hybrid systems considering temperature constraints." Journal of Power Sources 160.1 (2006): 462-473. http://dx.doi.org/10.1016/j.jpowsour.2006.01.018.

      [6] Araki, Takuto, et al. "Cycle analysis of planar SOFC power generation with serial connection of low and high temperature SOFCs." Journal of Power Sources 158.1 (2006): 52-59. http://dx.doi.org/10.1016/j.jpowsour.2005.09.003.

      [7] Granovskii, Mikhail, Ibrahim Dincer, and Marc A. Rosen. "Performance comparison of two combined SOFC–gas turbine systems." Journal of Power Sources 165.1 (2007): 307-314. http://dx.doi.org/10.1016/j.jpowsour.2006.11.069.

      [8] Haseli, Y., I. Dincer, and G. F. Naterer. "Thermodynamic modeling of a gas turbine cycle combined with a solid oxide fuel cell." International Journal of Hydrogen Energy 33.20 (2008): 5811-5822. http://dx.doi.org/10.1016/j.ijhydene.2008.05.036.

      [9] Cohen, Henry, et al., Gas turbine theory, (1987).

      [10] Shapiro H.N., Moran M.J, Fundamental of Engineering Thermodynamics, John Wiley & Sons. Motahar, S, (2006).




Article ID: 6520
DOI: 10.14419/ijsw.v4i2.6520

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