| Summary: | Hydrogen, a significant energy transporter, emits no carbon when energy is retrieved. The primary methods of hydrogen production, which emit carbon, involve the usage of fossil fuels. However, electrolysis splits water into hydrogen and oxygen gas using electricity. The efficiency of hydrogen production via electrolysis and fossil fuel sources is comparable. The cost of electrolysis is much higher because it requires more power. Energy losses must be reduced for electrolysis to be practicable for large-scale hydrogen production. In this work, the effects of both electrolyte concentration and magnetic field application are analyzed for hydrogen production rates in alkaline electrolysis with minimum energy consumption. The magnetic field's strength increases the conductivity of the electrolyte solution, which in turn accelerates hydrogen production. The present research has proposed a new electrolyzer design with stainless steel electrodes incorporating a magnetic field system. Such an arrangement has the potential to minimize energy consumption. Using both regular and distilled waters, the magnetic field intensity that would be optimal for this process was determined. Gas bubbles are expelled from the electrodes by convection. COMSOL Multiphysics software simulated the electrolyzer to determine the electrolyte current density and hydrogen and oxygen concentration at different voltage levels. The simulator studies the results of the rate of hydroxy gas production with various parameters such as the length of electrodes, the number of electrode plates, the gap between the plates, the temperature of the electrolyzer, and the volume of the electrolyzer. The results were as follows: 1.06 L/min with a 70 mm length and a magnetic field, 0.87 L/min with seven plates, 1.97 L/min with a 6 mm gap between the plates, 1.13 L/min at 20°C temperature, and 1.41 L/min with a 35 mm diameter cylindrical electrolyzer tank. Sodium hydroxide (NaOH), potassium hydroxide (KOH), and sodium bicarbonate (NaHCO3) were employed as electrolyte materials (supplementary compounds), and their effects on the process were investigated using doses of 5, 10, 15 and 20 grams in a total of 1.5 liters of electrolyte. Maximum millilitre per minute per watt (MMW) of hydroxy gas production was 5.32 with 5 g NaOH, 3.74 for KOH, and 2.23 for NaHCO3 at the same concentration. The results clearly indicate that NaOH is the most effective auxiliary material and was used in this study. Afterwards, a coil and a permanent magnet, such as a neodymium magnet, were used to apply the magnetic field. The electrolyzer was housed inside the coil, linked sequentially to the electrolyzer cells. The magnets were positioned immediately on top of the electrolyzer cell, polarizing the water atoms in one direction due to a magnetic field pointing in that direction. It used a magnetic coil and 130 watts of electricity to create 3.1 MMW hydroxy gas. Without a coil, a substantially lower value of HHO was detected. The experimental study with mesh plate electrodes yielded lower results compared to solid plate electrodes. There was a 48.8% improvement when using the solid plate electrodes. The use of distilled water resulted in a 47.7% improvement in comparison to tap water. When 5g of NaOH was mixed in 1.5L of distilled water, there was a 24.6% improvement in hydroxy gas production in simulator results when a magnetic field was used, compared to 34.4% without using a magnetic field. It is deduced that these geometry parameters implemented in the HHO electrolyzer design have improved hydroxy gas production rate effectively.
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