Parametric Analysis and Optimization of a Trigeneration System Based on the Tubular Solid Oxide Fuel Cell

Document Type : Research Article

Authors

1 urmia university

2 Urmia university

Abstract

In this article, a new power, cooling and heating trigeneration system consisting of solid oxide fuel cell - gas turbine, a heat recovery steam generator, generator-absorber[1]heat exchange absorption refrigeration cycle and a heat exchanger for heat recovery has been studied from a parametric and optimization perspective. In the present research, in order to control the wasted heat, HRSG is located upstream of GAX, and then, the wasted heat at the system output is used at HR. Due to the important role of the fuel cell in the introduced system, the electrochemical analysis is complete for the fuel cell. Then, the influences of current density, fuel utilization factor, compressor pressure ratio and air utilization factor on the performance of the system are investigated. The optimization of the system is performed in the method of the genetic algorithm to determine the optimal functional points. After optimization and exergoeconomic analysis, the the minimum sum of the unit costs of products, the exergy destruction cost rate and exergoeconomic factor for the overall system is equal to 277.2$/GJ, 40.8$/h and 27.8%, respectively. Therefore, increase in the components’ capital costs can improve the exergoeconomic performance of the system.

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References

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Amirkabir Journal of Mechanical Engineering
Volume 52, Issue 2
May 2020
Pages 399-418

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