The use of biomass due to the reduction in greenhouse gas emissions and environmental impacts has attracted many researchers�\nattention in the recent years. Access to an energy conversion system which is able to have the optimum performance for applying\nvaluable low heating value fuels has been considered by many practitioners and scholars. This paper focuses on the accurate\nmodeling of biomass gasification process and the optimal design of a multigeneration system (heating, cooling, electrical power,\nand hydrogen as energy carrier) to take the advantage of this clean energy. In the process of gasification modeling, a thermodynamic\nequilibrium model based on Gibbs energy minimization is used. Also, in the present study, a detailed parametric analysis of\nmultigeneration system for undersigning the behavior of objective functions with changing design parameters and obtaining the\noptimal design parameters of the system is done as well. The results show that with exergy efficiency as an objective function this\nparameter can increase from19.6% in base case to 21.89% in the optimized case. Also, for the total cost rate of system as an objective\nfunction it can decrease from 154.4 $/h to 145.1 $/h.
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