Thermodynamic evaluation and optimization of a cogeneration energy system integrated with steam network
نویسندگان
1 Department of Energy Engineering, Faculty of Natural Resource and Environment, Science and Research Branch, Islamic Azad University, Tehran, Iran
2 bDepartment of Energy Systems Engineering, Faculty of Mechanical Engineering, K. N. Toosi University of Technology, No. 15, Pardis St., Molasadra Ave., Vanak Sq., Tehran, Iran
3 Energy and Environment Faculty, Niroo Research Institute (NRI), Tehran, Iran
4 Department of Energy Engineering, Faculty of Natural Resource and Environment, Science and Research Branch, Islamic Azad University, Tehran, Iran
doi
10.22108/gpj.2021.126419.1096چکیده
Cogeneration energy systems are one of the most promising clean, efficient technologies for satisfying industrial energy needs. In this study, a cogeneration system consisting of a solid oxide fuel cell, a gasification unit, a gas turbine cycle, and a steam network module is proposed. This topping system is integrated with a steam network that provides steam for different utilities by recovering steam. Also, biomass –as renewable energy– is used to address the problems of fossil fuels, such as scarcity of resources and environmental issues. The system is evaluated from an energy perspective to ascertain the feasibility of the system. Based on the results, the efficiency attained from this system is 54.35%. An optimization study based on a genetic algorithm is performed to find the best conditions, which indicates an efficiency improvement to 65.06%. Moreover, a parametric study on different steam network pressure levels is taken place, which shows the importance of the VHP header on system performance.
