Hydrogen Generation Optimization in a Hybrid Photovoltaic-Electrolyzer Using Intelligent Techniques

2012 ◽  
Author(s):  
Azadeh Maroufmashat ◽  
Farid Seyyedyn ◽  
Ramin Roshandel ◽  
Mehrdad Boroushaki
Keyword(s):  
Proton Exchange Membrane ◽  
Hydrogen Generation ◽  
Optimization Method ◽  
Cell Number ◽  
Proton Exchange ◽  
Photovoltaic Module ◽  
Pv Module ◽  
Novel Method ◽  
Exchange Membrane ◽  
And Storage

Hydrogen is a flexible energy carrier and storage medium and can be generated by electrolysis of water. In this research, hydrogen generation is maximized by optimizing the optimal sizing and operating condition of an electrolyzer directly connected to a PV module. The method presented here is based on Particle swarm optimization algorithm (PSO). The hydrogen, in this study, was produced using a proton exchange membrane (PEM) electrolyzer. The required power was supplied by a photovoltaic module rated at 80 watt. In order to optimize Hydrogen generation, the cell number of the electrolyser and its activity must be 9 and 3, respectively. As a result, it is possible to closely match the electrolyzer polarization curve to the curve connecting PV system’s maximum power points at different irradiation levels. PSO is a novel method in optimization inspiring from observation of bird flocking and fish schooling. Comparing to other optimization method, not only PSO is more efficient and require lower functions of evaluations, but it leads to better results, as well.

Amorphous Ni-Co-B Catalyst for Hydrolysis of NaBH4 in Alkaline Solution

2011 ◽  
Vol 675-677 ◽  
pp. 33-36
Author(s):  
Chuan Wu ◽  
Ying Bai ◽  
Feng Wu ◽  
Dan Xian Liu
Keyword(s):  
Alkaline Solution ◽  
Photoelectron Spectroscopy ◽  
Proton Exchange Membrane ◽  
Hydrogen Generation ◽  
Chemical Reduction ◽  
Heat Treating ◽  
Proton Exchange ◽  
X Ray ◽  
Bet Analysis ◽  
Exchange Membrane

Amorphous Ni-Co-B catalyst was synthesized by a chemical reduction method, and followed by a heat-treating at 100°C, then characterized by X-ray diffraction (XRD), Scanning electronic microscopy (SEM), X-ray photoelectron spectroscopy (XPS), Brunauer-Emmetr-Teller (BET) analysis, and adopted to help accelerating hydrolysis reaction of NaBH4 alkaline solution. It is proved that the amorphous Ni-Co-B catalyst is not a simple combination of elemental Ni, Co and B, but a multiplex metal boride. It exhibits an maximum hydrogen generation rate of 210 ml/min/(g catalyst) at 100% H2 utilization, which is potentially to give a successive H2 supply for proton exchange membrane fuel cells.

Integration of a Biomass-Fueled Proton Exchange Membrane Fuel Cell System and a Vanadium Redox Battery as a Power Generation and Storage System

2020 ◽  
Author(s):  
Hassan Ali Ozgoli ◽  
Sadegh Safari ◽  
Mohammad Hossein Sharifi
Keyword(s):  
Power Generation ◽  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Integrated System ◽  
Heating Value ◽  
Oxidation Reactor ◽  
Exchange Membrane ◽  
And Storage ◽  
Vanadium Redox

In this study, a novel integrated system of a Biomass Gasification (BG) system with a Proton Exchange Membrane Fuel Cell (PEMFC) and a Vanadium Redox Flow Battery (VRB) is suggested and has focused on both power generation and storage ability of the system. Effect of some key parameters including, current density, voltage, gasification efficiency, low heating value, high heating value, oxygen equivalence ratio, efficiency has taken into consideration. Also, a water-gas shift reactor, as a preferential oxidation reactor, are facilitated to purify syngas and reduce the CO content to use in the PEMFC. The richest H2 amount and lower CO was obtained from the Sugarcane in which it provides 32 mol.% H2 and 18 mol.% CO. A sensitivity analysis of the load level impact on the PEMFC system has been studied in which at 5 kW electrical load, the electrical and the thermal efficiencies of the integrated system have an estimated 22% and 32%, respectively. Furthermore, by employing the waste heat recovery system, the overall efficiency has improved by up to 58%. Besides, the findings provide a potential mechanism for employing the proposed integrated system in distributed generation, individually in rural areas, where plenty of feedstock sources are available.

scholarly journals Hydrogen Production through a Solar Powered Electrolysis System

2019 ◽  
pp. 1-14
Author(s):  
Deborah A. Udousoro ◽  
Cliff Dansoh
Keyword(s):  
Hydrogen Production ◽  
Proton Exchange Membrane ◽  
Renewable Energy Sources ◽  
Proton Exchange ◽  
Photovoltaic System ◽  
Photovoltaic Module ◽  
Production Of Hydrogen ◽  
Solar Powered ◽  
Exchange Membrane ◽  
Electrolysis System

Production of hydrogen from renewable energy sources is gaining recognition as one of the best energy solutions without ecological drawbacks. The present study reports hydrogen production through a solar powered electrolysis system as a means to curtail greenhouse gas emissions in the United Kingdom. The solar powered electrolysis unit is modeled to provide 58400 kg of hydrogen to run the fuel cell bus fleet in Lea interchange garage in London on a yearly basis. Experiments were conducted to determine the efficiency of the photovoltaic module and the proton exchange membrane electrolyzer. An energy balance of the electrolysis unit was calculated to give 47.82 kWh/kg and used to model a 2.98 MW photovoltaic system required to run the electrolysis process.

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