Performance assessment of a hybrid fuel cell and micro gas turbine power system

Authors

  • Ahmad Sedaghat Department of Mechanical Engineering, Isfahan, University of Technology, Isfahan 84156-83111, I.R. of Iran
  • Ahmad Tahmasebi Islamic Azad University, Najafabad Branch, Najafabad, I.R. of Iran
  • Mahdi Moghimi Zand School of Mechanical Engineering, College of Engineering, University of Tehran, Tehran, Iran
  • Rasool Kalbasi Islamic Azad University, Najafabad Branch, Najafabad, I.R. of Iran
Abstract:

In this paper, a hybrid solid oxide fuel cell (SOFC) and micro gas turbine (MGT) power system is parametrically studied to evaluate the effect of different operating conditions. The SOFC/MGT power system includes SOFC reactor, combustion chamber, compressor and turbine units, and two heat exchangers. The effects of fuel utilization, temperature, and pressure are assessed on performance of the hybrid SOFC/MGT power system using energy and exergy analyses. This study reveals that the main exergy loss occurs in the external reformer and the maximum achievable output power is about 7kW for the hybrid system. Finally, the promising first law thermal efficiency of up to 83% is achieved when the second law efficiency enhances to 65% for the hybrid system.

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Journal title

volume 1  issue 1

pages  59- 74

publication date 2013-07-01

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