Mechanical Engineering

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Mechanical Engineering

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    Development of Footstep Electricity Energy Generating Machine using Dual Generator
    (Alex Ekwueme Federal University, Ndufu-Alike Ikwo, Ebonyi State, Nigeria, 2019-05-15) Igbo, .E. B.; Bori Ige
    Footstep electricity energy generation machine have been seen in most populated country and the different existing machines have various capacity of generated electricity power. The concept and the technology is simply the production of electrical energy by weight which acts on the footsteps. Footstep electrical energy generation is of three types namely; rack and pinion, piezoelectric method, fuel and piston method. It was comparatively discovered that the rack and pinion mechanism is more effective, efficient with less cost of operation and maintenance. In the existing rack and pinion method, energy was not adequately harvested from footsteps as a result of many gears, shafts and incorporation of a single generator. This takes time to generate electricity and the output capacity is low in watt. With this motivation, a prototype footstep electricity energy generating machine using dual generators, chains and sprockets was developed. This was designed by considering parameters such as human weights, speed and low cost. The prototype was designed to be a value for money production in the power generation sectors. For designing the work rack and pinion, human weight were studies to understand the operation. At the end, the machine was fabricated using local material. The machine upon fabrication was evaluated at ten (10) different human weights of 40, 50, 53, 56, 60, 70, 85, 101, 105, 108 kgs and power of 6.69, 6.949, 3.92, 10.848, 8.29, 8.339, 12. 064, 11.349, 11. 359 and 11.359 watts, with angular speeds of 5.08, 5.28, 2.98, 8.24, 6.30, 6.33, 9.16, 8.62, 8.63, 9.35 rpm were obtained respectively. The result showed that weight is directly proportional to both power and angular speed. The result showed that optimism occurred at 85kg. Using a dual generators increase higher electricity energy generation, effective and efficient harvesting of footstep energy.
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    Analysis of Solar Energy Potentials in Katsina and Sokoto States, Nigeria
    (Nigerian Institution of Mechanical Engineers (NiMeCHE), 2020-10-20) Irekeola, .B. J.; Bori Ige; Adedipe, .O.; Babawuya, .A.
    For many years, Nigeria has been facing energy crisis that is hampering her economic development. Energy is one of the key fundamentals for economic development and it is also fundamental to all human activities in this era. In this study, renewable energy potentials in Sokoto and Katsina states were analyzed respectively. Data covering a period of ten years (2007 - 2017) were obtained from the Nigerian Meteorological Agency (NIMET), Abuja, for monthly average daily solar radiation, maximum and minimum temperatures for the two states under investigations. The data were subjected to statistical analysis such as normality test, to examine whether the data is normally distributed using standardized coefficient of skewness, and kurtosis using a 250 Watts by 1.68m square solar panel; the results show that the solar radiations are negatively skewed by a value of -0.6 and -0.43, which makes the two states more reliable during the dry season of the year. The two states have a kurtosis of -1.17 and -1.38 indicating that the bell shape is slightly flatten than normal distribution shape. A linear regression model was also developed to predict the trends in solar radiation for the study area. The results show that Katsina state has a higher reliability (0.86) for solar energy potentials than Sokoto state (0.72).