جستجوی مقالات مرتبط با کلیدواژه « پیل سوختی کربنات مذاب » در نشریات گروه « مکانیک »

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.

Fuel cells have attracted considerable interest during the recent years. Among the different types, high temperature fuel cells are very promising because of their high efficiency, fuel flexibility and high temperature of the exhaust heat which can be used for cogeneration. Among the high temperature fuel cells, Molten Carbonate Fuel Cell (MCFC) has several advantages but is studied less than others. Co2 capturing and internal reforming are its benefits. Internal reforming eliminates the need for external reformers and increases the overall efficiency of the system. In order to better understand the performance of MCFC, in this study, the model of MCFC with indirect internal reforming is developed step by step. The model is developed in a way that has a proper response speed and accuracy. Given that MCFC is a developing technology particularly in our country, evaluating the performance of this technology under different condition could be useful in further progress of MCFC. In order to evaluate the parameters of molten carbonate fuel cell, the impact of parameters such as pressure, fuel cell inlet temperature, steam to carbon ratio, utilization factor of fuel and utilization factor of air and carbon dioxide on the efficiency of the fuel cell is examined. Given that MCFC is a developing technology, particularly in our country, evaluating the performance of this technology under different conditions could be useful in further progress of MCFC. According to the sensitivity analysis conducted, parameters such as pressure, steam to carbon ration, fuel cell inlet temperature and utilization factor of fuel have the most impact on the efficiency of MCFC. With increasing pressure, efficiency is reduced from 56% to 42%. Also, increasing steam to carbon ratio, fuel cell inlet temperature and utilization factor of fuel increases the efficiency by 6.2%, 7.5% and 14.3%, respectively. On the other hand, the utilization factor of air and carbon dioxide have the least impact on the efficiency of MCFC.