LAUSR

Oxy-hydrogen gas is a mixture of hydrogen and oxygen gases produced by water electrolysis that is supposed to increase the efficiency of the internal combustion engines when fed into the air intake. In this study, four different oxy-hydrogen generators were built to work as electrolyzers. The amount of produced (HOH) was measured experimentally at different current intensities and electrolyte concentrations of aqua solution of potassium hydroxide. The characteristics of the oxy-hydrogen generators were studied by using a mathematical model developed in previous literature. The model was used to predict the performance of the oxy-hydrogen generator, to study the effect of different parameters on its performance as well as to predict the mass flow rate of the produced oxy-hydrogen gas. The model results showed that the energy efficiency of a cell is inversely proportional to the electric current and ranges from 73 to 86% at an operating temperature of $$30\,^{\circ }\hbox {C}$$30∘C. Also, the electrolyte operating temperature has a significant effect where the energy efficiency was found to range from 74 to 84% when changing the temperature from 30 to $$80\, ^{\circ }\hbox {C}$$80∘C. The input power for the process increased with increasing the temperature. The experimental results showed that the electrodes inter-distance between blades in the range between 1.2 and  2.4 mm did not affect the production rate of HOH. The good agreement between the measured and predicted results indicates that the designed and manufactured gas generators give their rated output at different operating conditions with a good agreement with the electrochemical and thermodynamic basics.