Thermodynamic assessment of a lab-scale experimental copper-chlorine cycle for sustainable hydrogen production |
| |
| Affiliation: | 1. Clean Energy Research Laboratory, Faculty of Engineering and Applied Science, University of Ontario Institute of Technology, 2000 Simcoe Street North, Oshawa, Ontario, L1H 7K4, Canada;2. Faculty of Engineering and Applied Science, Memorial University of Newfoundland, 240 Prince Phillip Drive, St. John''s, Newfoundland and Labrador, A1B 3X5, Canada;1. Department of Chemical Engineering, National Cheng Kung University, Tainan 70101, Taiwan, ROC;2. Department of Greenergy, National University of Tainan, Tainan 70005, Taiwan, ROC;1. Memorial University of Newfoundland, St. John''s, Newfoundland, Canada;2. Atomic Energy of Canada Limited (AECL), Chalk River, Ontario, Canada;3. Argonne National Laboratory, Argonne, Illinois, USA;4. University of Ontario Institute of Technology (UOIT), Oshawa, Ontario, Canada;5. Pennsylvania State University, University Park, PA, USA;6. University of Toronto, Toronto, Ontario, Canada;1. Faculty of Engineering and Applied Science, Memorial University of Newfoundland, St. John''s, NL A1B 3X5, Canada;2. Hydrogen Isotopes Technology Branch, Atomic Energy of Canada Limited (AECL), Chalk River, Ontario K0J 1J0, Canada;3. Chemical Engineering Division, Argonne National Laboratory, 9700 S. Cass Ave., Argonne, IL 60439, United States;4. University of Ontario Institute of Technology (UOIT), 2000 Simcoe Street North, Oshawa, Ontario L1H 7K4, Canada;5. Lassonde School of Engineering, York University, Toronto, Ontario M3J 1P3, Canada;6. University of Toronto, Department of Chemical Engineering and Applied Chemistry, 200 College Street, Toronto, Ontario M5S 3E5, Canada |
| |
| Abstract: | An integrated lab-scale copper-chlorine (Cu-Cl) thermochemical cycle for hydrogen production at the University of Ontario Institute of Technology (UOIT) is presented and analyzed in this paper. In a practical operation of the Cu-Cl cycle, besides the main steps of hydrolysis, thermolysis, electrolysis and drying, the oxidized anolyte (consumed anolyte at the electrolyzer cell) needs to be recycled to be concentrated sufficiently for the electro-chemical process. Recycling of the oxidized anolyte through the separation processes is achieved by distillation of anolyte, drying unit, separation cell, pressure swing distillation and CuCl2 concentrator. This study examines the thermodynamic performance of all unit operations in the lab-scale Cu-Cl cycle. A process simulation model with Aspen Plus is used to assess the system by energy and exergy analyses. For the specific system design characteristics, the cycle is capable of producing 100 L/h of hydrogen. From the simulation results, the overall energy and exergy efficiencies of the lab-scale Cu-Cl cycle are determined to be 11.6% and 34.9%, respectively. Furthermore, after the thermolysis and hydrolysis reactors, the quench cell and CuCl2 concentrator have the highest exergy losses with thermal energy transferred through CuCl solidification and water vaporization phase-change processes at relatively high temperature. Additional results of the processes are presented and discussed. |
| |
| Keywords: | Cu-Cl cycle Hydrogen Energy Thermochemical cycle Exergy Efficiency |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
