Energy and exergy analyses of a Zero emission coal system
作者： Linbo Yan , Boshu He , Xiaohui Pei , Xusheng Li , Chaojun Wang
DOI: 10.1016/J.ENERGY.2013.04.006
关键词: Efficient energy use 、 Solid oxide fuel cell 、 Environmental science 、 Waste management 、 Exergy efficiency 、 Exergy 、 Steam turbine 、 Energy flow 、 Nuclear engineering 、 Zero emission 、 Coal 、 General Energy 、 Pollution
摘要: Abstract Energy and exergy analyses are used to evaluate the Zero emission coal (ZEC) system. losses in each unit of system calculated depicted with Sankey diagrams energy flow when operates at a benchmark condition. Sensitivity analysis is carried out investigate effects different operating parameters including H2 recycling ratio (Rh), calcium carbon (Rctc) fuel utilization factor (Uf) on efficiency (Een), (Eex), total (Eten), (Etex) dioxide (CO2) sequestration (Rcs) this The loss steam turbine (ST) 35.2% which maximum among all units 37.0% occurs solid oxide cell (SOFC). Rh 0.75 Uf 0.8 recommended as optimum operation based sensitivity analysis. Rcs increases increasing Rctc. Rctc 1.5 maintain high CO2 acceptable economic penalty. With these optimized parameters, Een 36.2%, Eten 46.8%, Eex 35.7%, Etex 46.2% 87.4% can be achieved by proposed
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