title: Thermodynamic analyses of a biomass-coal co-gasification power generation system.
abstract: A novel chemical looping power generation system is presented based on the biomass-coal co-gasification with steam. The effects of different key operation parameters including biomass mass fraction (Rb), steam to carbon mole ratio (Rsc), gasification temperature (Tg) and iron to fuel mole ratio (Rif) on the system performances like energy efficiency (ηe), total energy efficiency (ηte), exergy efficiency (ηex), total exergy efficiency (ηtex) and carbon capture rate (ηcc) are analyzed. A benchmark condition is set, under which ηte, ηtex and ηcc are found to be 39.9%, 37.6% and 96.0%, respectively. Furthermore, detailed energy Sankey diagram and exergy Grassmann diagram are drawn for the entire system operating under the benchmark condition. The energy and exergy efficiencies of the units composing the system are also predicted.
authors.affiliation: Department of Thermal Engineering, Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Tsinghua University, Beijing 100084, China.
authors.forename: Linbo
authors.initials: L
authors.lastname: Yan
authors.affiliation: Department of Thermal Engineering, Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Tsinghua University, Beijing 100084, China.
authors.forename: Guangxi
authors.initials: G
authors.lastname: Yue
authors.affiliation: Institute of Combustion and Thermal Systems, School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing 100044, China; Beijing Key Laboratory of Powertrain for New Energy Vehicle, Beijing Jiaotong University, Beijing 100044, China. Electronic address: hebs@bjtu.edu.cn.
authors.forename: Boshu
authors.initials: B
authors.lastname: He
mesh_terms: D018533:Biomass; D002244:Carbon; D003031:Coal; D004736:Energy-Generating Resources; D007501:Iron; D013227:Steam; D013696:Temperature; D013816:Thermodynamics
chemical_list: D003031:Coal; D013227:Steam; D002244:Carbon; D007501:Iron
keywords: Biomass; Chemical looping; Co-gasification; Coal; Solid oxide fuel cell (SOFC)