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Papers by mahsa rajabi
Applied Energy, 2019
Chemical looping combustion method is used to prevent CO 2 emission. • Integration of chemical lo... more Chemical looping combustion method is used to prevent CO 2 emission. • Integration of chemical looping technology in CHP and CCHP systems is studied. • Structure of the processes integrated to chemical looping unit is discussed. • Layout of the integrated processes are classified and explained.
International Journal of Hydrogen Energy, 2017
This study was aimed at proposing a novel integrated process for co-production of hydrogen and el... more This study was aimed at proposing a novel integrated process for co-production of hydrogen and electricity through integrating biomass gasification, chemical looping combustion, and electrical power generation cycle with CO 2 capture. Syngas obtained from biomass gasification was used as fuel for chemical looping combustion process. Calcium oxide metal oxide was used as oxygen carrier in the chemical looping system. The effluent stream of the chemical looping system was then transferred through a bottoming power generation cycle with carbon capture capability. The products achieved through the proposed process were highly-pure hydrogen and electricity generated by chemical looping and power generation cycle, respectively. Moreover, LNG cold energy was used as heat sink to improve the electrical power generation efficiency of the process. Sensitivity analysis was also carried out to scrutinize the effects of influential parameters, i.e., carbonator temperature, steam/biomass ratio, gasification temperature, gas turbine inlet stream temperature, and liquefied natural gas (LNG) flow rate on the plant performance. Overall, the optimum heat integration was achieved among the subsystems of the plant while a high energy efficiency and zero CO 2 emission were also accomplished. The findings of the present study could assist future investigations in analyzing the performance of integrated processes and in investigating optimal operating conditions of such systems.
Journal of Energy Storage
Applied Energy, 2019
Chemical looping combustion method is used to prevent CO 2 emission. • Integration of chemical lo... more Chemical looping combustion method is used to prevent CO 2 emission. • Integration of chemical looping technology in CHP and CCHP systems is studied. • Structure of the processes integrated to chemical looping unit is discussed. • Layout of the integrated processes are classified and explained.
International Journal of Hydrogen Energy, 2017
This study was aimed at proposing a novel integrated process for co-production of hydrogen and el... more This study was aimed at proposing a novel integrated process for co-production of hydrogen and electricity through integrating biomass gasification, chemical looping combustion, and electrical power generation cycle with CO 2 capture. Syngas obtained from biomass gasification was used as fuel for chemical looping combustion process. Calcium oxide metal oxide was used as oxygen carrier in the chemical looping system. The effluent stream of the chemical looping system was then transferred through a bottoming power generation cycle with carbon capture capability. The products achieved through the proposed process were highly-pure hydrogen and electricity generated by chemical looping and power generation cycle, respectively. Moreover, LNG cold energy was used as heat sink to improve the electrical power generation efficiency of the process. Sensitivity analysis was also carried out to scrutinize the effects of influential parameters, i.e., carbonator temperature, steam/biomass ratio, gasification temperature, gas turbine inlet stream temperature, and liquefied natural gas (LNG) flow rate on the plant performance. Overall, the optimum heat integration was achieved among the subsystems of the plant while a high energy efficiency and zero CO 2 emission were also accomplished. The findings of the present study could assist future investigations in analyzing the performance of integrated processes and in investigating optimal operating conditions of such systems.
Journal of Energy Storage