This paper presents the feasibility of hydrogen production via an electrolysis process supported by a solar power system. To this end, the economic feasibility and annual performance of a 20kW solar power plant located in Yazd City, Iran, were evaluated through experimental studies and simulations. Data relating to real and simulated power output from July 2012 to the end of June 2013 were compared and evaluated using the reference cell component of PVsyst simulation software. The actual and simulated power output of the station is then used to evaluate the PV hydrogen production potential.
The efficiency of the electrolyzer is considered to be 90% with a power consumption of 5KWh/Nm3. The results show that over a year the panel receives 299.376 MW/h of solar radiation from the surface and converts 12.32% (36.91 MWh) of the incoming solar radiation into electricity with its highest output in August. December’s lowest Power plant simulations have shown that the shadow effect reduces the power plant’s output by about 5%. In addition, when the monthly optimal angle is applied to the panel instead of the annual optimal angle, the output increases by 6.83% when the overshadow effect is not considered, and by 3% when the effect is taken into account. After evaluating the station’s actual and simulated power output, the potential for PV-hydrogen production is estimated at 373 tonnes per year (actual production), with a peak output in August. The results show that the region can generate electricity for hydrogen production.
Hydrogen fuel for fuel cell vehicles can be produced using solar electrical energy from photovoltaic (PV) modules for the electrolysis of water without emitting carbon dioxide or requiring fossil fuels. In the past, this renewable means of hydrogen production has suffered from low efficiencies (2-6%), which increases the area of the PV array required and thus increases the cost of hydrogen generation. In this study, the efficiency of a PV electrolysis system was optimized by matching the operating voltage of a Proton Exchange Membrane (PEM) electrolyzer with the voltage and maximum output of a solar power plant. The optimization process increased the hydrogen generation efficiency of the solar PV-PEM electrolyzer to 12%, which could provide enough hydrogen to run fuel cell vehicles.
The current study addresses potential solutions for replacing fossil fuel-based energy resources with sustainable solar energy sources. Investigate the electrical energy needs of small communities where floating solar systems and integrated hydrogen production units are used. Data are from the Mumcular Dam located in the Aegean region of Turkey. PvSyst software is used for simulation purposes. In addition, the obtained results are analyzed in HOMER Pro Software. Photovoltaic (PV) electricity is used by the electrolyzer and provides the required load and excess electricity to produce hydrogen. Conserving land by avoiding use on existing PV farms, saving water by reducing evaporation, and compensating for the intermittent availability of solar energy are among the findings obtained for the scenario considered. The stored hydrogen is used to compensate the electrical load by generating electricity with fuel cells.