Comprehensive assessment on a hybrid PEMFC multi-generation system integrated with solar-assisted methane cracking |
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| Affiliation: | 1. College of Mechanical Engineering, Hunan Institute of Science and Technology, Yueyang, 414006, China;2. State Key Laboratory of Multiphase Flow in Power Engineering, Xi''an Jiaotong University, Xi''an 710049, China;3. Shenzhen Gas Corporation Ltd., Shenzhen 518040, China;1. School of Energy and Power Engineering, Xi''an Jiaotong University, Xi''an 710049, China;2. Beijing PERIC Hydrogen Technologies Co., Ltd, Beijing 100037, China;1. School of Electronic and Information Engineering, Shanghai University of Electric Power, Shanghai, 201306, China;2. Department of Electrical Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, 200240 Shanghai, China;3. Shanghai Xinwei Semiconductor Co. Ltd, China;1. Institute of Thermal Engineering, Technische Universität Bergakademie Freiberg, Freiberg, Germany;2. Technical University of Darmstadt, Department of Mechanical Engineering, Simulation of Reactive Thermo-Fluid Systems, Otto-Berndt-Str. 2, 64287 Darmstadt, Germany |
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| Abstract: | A hybrid proton exchange membrane fuel cell (PEMFC) multi-generation system model integrated with solar-assisted methane cracking is established. The whole system mainly consists of a disc type solar Collector, PEMFC, Organic Rankine cycle (ORC). Methane cracking by solar energy to generate hydrogen, which provides both power and heat. The waste heat and hydrogen generated during the reaction are efficiently utilized to generate electricity power through ORC and PEMFC. The mapping relationships between thermodynamic parameters (collector temperature and separation ratio) and economic factors (methane and carbon price) on the hybrid system performance are investigated. The greenhouse gas (GHG) emission reductions and levelized cost of energy (LCOE) are applied to environmental and economic performance evaluation. The results indicate that the exergy utilization factor (EXUF) and energy efficiency of the novel system can reach 21.9% and 34.6%, respectively. The solar-chemical energy conversion efficiency reaches 40.3%. The LCOE is 0.0733 $/kWh when the carbon price is 0.725 $/kg. After operation period, the GHG emission reduction and recovered carbon can reach 4 × 107 g and 14,556 kg, respectively. This novel hybrid system provides a new pathway for the efficient utilization of solar and methane resources and promotes the popularization of PEMFC in zero energy building. |
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| Keywords: | PEMFC CCHP Hydrogen production Solar energy System efficiency |
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