مهندسی مکانیک شریف (May 2019)
OPTIMIZATION, THERMODYNAMIC ANALYSIS AND INTEGRATION INCLUDING MOLTEN CARBONATE FUEL CELL HYBRID SYSTEM AND THE STIRLING ENGINE
Abstract
Due to rising fuel prices and environmental concerns fuel cells as an alternative to conventional power plants will be considered. Among the produced molten carbonate fuel cell MCFC fuel cell as a fuel cell Operating temperature and high power applications where high heat is removed from Be considered. Stirling engine as well as a high efficiency reciprocating engine because the engine operating quietly and economically attention. The hybrid system consists of molten carbonate fuel cell and Stirling engine. Its works that The anode molten carbonate fuel cell, hydrogen reacts with carbonate and electrons and produces water and carbon dioxide That carbon dioxide is transferred to the cathode through a cycle where the air reacts with oxygen and generate carbonate produced at the anode to the cathode, electrons are transported and generate electricity This reaction produces heat that as heat source for the Stirling engine use Stirling engine work and begin to produce mechanical work. The hybrid system consists of molten carbonate fuel cell and Stirling engine has been recently put more emphasis on it and somehow it can be regarded as clean energy and new. In this paper, MATLAB software was used to optimize the genetic algorithm that yields the highest percentage of hybrid systems is 84.71\%. Following the first review of the work and efficiency of irreversible and reversible work and the efficiency of the hybrid system and each of its components described above. And then the molten carbonate fuel cell voltage in a state of irreversible and reversible pay. 87.60\% efficiency hybrid system in its irreversible and reversible mode with a maximum working reversible molten carbonate fuel cell is 94.21\% and that the returns in terms of temperature between the temperature of 800 K to 1100 K hybrid systems for molten carbonate fuel cell integration mode and a certain uniformity.
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