These are articles published in journals by academics staff ir.bowen.edu.ng:8181/jspui/handle/123456789/346 2026-04-02T21:50:41Z 2026-04-02T21:50:41Z Abanihi, K. V. Aigbodion, D. O. Kokoette, E. D. Diarah, R. S. ir.bowen.edu.ng:8181/jspui/handle/123456789/920 2023-03-23T10:31:58Z 2014-01-01T00:00:00Z

Title: Analysis of load test, transformation, turns ratio, efficiency and voltage regulation of single phase transformer Authors: Abanihi, K. V.; Aigbodion, D. O.; Kokoette, E. D.; Diarah, R. S. Abstract: This paper presents analysis obtained for the design of single phase transformer. The method is simple, efficient and accurate, by an exhaustive analysis. The following constraints are imposed: excitation current, load fractions, efficiency and voltage regulations. The methodology of this paper requires only two input data: primary side of the transformer and the secondary side of the transformer. The input side of the transformer include the following parameters; voltage, current and power while the secondary side of the transformer includes; voltage, current, efficiency, voltage regulation. These data are included in the transformer nameplate. In this paper, the minimization of the following four objective functions is considered: total owing cost, mass, total losses and material cost was considered.The consideration of these four objective functions is implemented automatically by running the analysis several times without intervention of a designer. Consequently, transformer manufacturers save design man-hours and increase capacity. The optimized solutions of transformer design are validated with laboratory and process measurements. In this paper the simulation of single phase transformer with different supplies such as Load Test and efficiency of voltage regulation are carried out.

2014-01-01T00:00:00Z Diarah, R. S. Oyetunji, S. A. Osueke, C. O. Onokwai, A. O. ir.bowen.edu.ng:8181/jspui/handle/123456789/891 2023-03-20T13:43:35Z 2018-01-01T00:00:00Z

Title: Dataset on cellular and geo-spatial information of a 10 km distance along Akure-Ilesha road Authors: Diarah, R. S.; Oyetunji, S. A.; Osueke, C. O.; Onokwai, A. O. Abstract: This dataset contains cellular and geo-spatial information of a 10 km distance along Akure-Ilsha road in Ondo state, Nigeria. The data was acquired using a designed data acquisition system which was kept inside golf3 vehicle interfaced with Acer laptop, the data was acquired as the vehicle moves from the reference point (7.39919, 5.05944 ) to its destination point (7.32818, 5.10836), it harvests GSM signal Strengths from a base station in intervals with its time, latitude and longitude simultaneously as the vehicle moves along the travelled rout; the data acquired shows the var iation of signal strength against distance along the road from one base station to another in the travelled path. The raw data of this work is hosted in the Mendeley repository DOI:10.17632/tmksc8mkt8.1.

2018-01-01T00:00:00Z Ezugwu, C. A. Osueke, C. O. Onokwai, A. O. Diarah, R. S. Olayanju, T. M. A Braimoh, S. O. Olawale, O. Nnaji, F. C. ir.bowen.edu.ng:8181/jspui/handle/123456789/886 2023-03-20T13:22:15Z 2019-01-01T00:00:00Z

Title: Design and fabrication of a motorized/power operated plantain slicer for optimum chips production Authors: Ezugwu, C. A.; Osueke, C. O.; Onokwai, A. O.; Diarah, R. S.; Olayanju, T. M. A; Braimoh, S. O.; Olawale, O.; Nnaji, F. C. Abstract: In Nigeria, plantain chips are in high demand and this demand is not being met by most small scale food industries and shops due to some critical factors. Shops are only able to fulfill approximately two-thirds of the demand. The biggest obstacle towards attaining self-sufficiency in the production of plantain chips is the intensity of labor involved and the tediousness of the process which often culminate into prolonged production time. Plantain has a large amount of sap and this causes the skin to adhere to the fruit inside. After peeling, they must be sliced into discs to fry into chips. Worker will hold up to eight plantains in one hand and rapidly slice them using a wooden mandolin. Because of the rapid pace at which they slice plantain and the absence of hand gloves on the workers, accidents are very often unavoidable. These presents health hazards to both the worker, who may develop infections from their injuries, and customers who may consume an unsanitary product. This development is very uncomfortable and tasking on the workers. They must hold the mandolin over the fryer so the plantains will fall in, which causes splashing of the boiling hot oil that occasionally hits and injures the worker. This research focused on design and fabrication of motorized / power operated plantain slicer to meet the raising demands for plantain chips in Nigeria. The objectives of this research was met as the machine has the capacity to produce plantain chips of uniform size in shorter time and a greater slicing efficiency of up to 96.84% while keeping the cost of the machine at an affordable price.

2019-01-01T00:00:00Z Nnodim, C. T. Kpu, G. C. Okhuegbe, S. N. Ajani, A. A. Adebayo, S. Diarah, R. S. Aliyu, S. J. Onokwai, A. O. Osueke, C. O. ir.bowen.edu.ng:8181/jspui/handle/123456789/885 2023-03-20T13:18:34Z 2022-01-01T00:00:00Z

Title: Figures of merit for wind and solar PV integration in electricity grids Authors: Nnodim, C. T.; Kpu, G. C.; Okhuegbe, S. N.; Ajani, A. A.; Adebayo, S.; Diarah, R. S.; Aliyu, S. J.; Onokwai, A. O.; Osueke, C. O. Abstract: In future electrical grids, high levels of Variable Renewable Energy (VRE) penetration including solar photovoltaics (PV) and wind energy is expected. This poses a challenge in system operation and planning especially in balancing electricity demand and supply. This paper examines figures of merit for wind and solar integration in electricity grids. Quantitative tools such as load duration curves, correlation analyses, and the Fourier transform were used to study the intermittency/variability of wind and solar PV power. Time series data on power production from the European Network of Transmission System Operators for Electricity (ENTSO-E), and Réseau de Transport d'Électricité (RTE) were used for the analyses. The analyses illustrate that despite the valuable amount of energy that can be obtained from wind and solar PV, these energy sources cannot be used as baseload power supply. Solar PV power is available for approximately 50% of the time year-round. Wind power output on the other hand can reach very small magnitudes of just a few megawatts several times in a year. More to that, wind is positively correlated over long distances, even exceeding 3000 km and aggregating wind fleets over a large geographic area might not guarantee continuous availability of wind power. Nonetheless, these sources can still be integrated in electricity grids in high proportions, provided intermittency mitigation options such as energy storage, curtailment, and demand-response are implemented.

2022-01-01T00:00:00Z