Browsing by Author "Simolowo, O. E."

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Assessment of household energy efficiency in Ibadan, Nigeria
(2012) Adediran, A. A.; Simolowo, O. E.
Household require significant amount of energy to meet various services like lighting, cooling, heating, cooking, refrigeration, electronic entertainment, e.t.c. There’s virtually any household activity that can be carried out without the use energy. The requirement for household energy in Nigeria has been growing over time. There are various energy sources available to households in the country. They include fuel, wood, charcoal, sawdust, gas, petrol, kerosene and electricity. It is fairly settled from literatures that electricity is the cheapest and cleanest energy source available. However, Nigeria, with a population of over 150 million people only has about 40% of its population having access to electricity with most of the people with access living in the urban centers (UNDP, 2011). Access to electricity in Nigeria is the dividing line between the urban areas and the rural areas. It can be said that Nigeria is suffering from “ Energy Poverty”. For a nation that seeks to attain the status of developed economy, the issue of energy poverty must be resolved fast.
CAD/CAM applications: status and impact in Nigerian industrial sector
(2010-06) Simolowo, O. E.; Okonkwo, F. C.; Kehinde, O. O.
This research assessed, among others, the current status and the impact of Computer-Aided Design (CAD) and Computer-Aided Manufacturing (CAM) applications in the Nigerian industrial and technological sector. Two prominent cities Lagos and Ibadan were selected as centers of case studies to establish the level of the applications. Data was collected from industries within the 2 cities in the areas of manufacturing, design, production, construction and consultancy service units during a yearlong study. From the survey, 56% of companies visited in Lagos metropolis apply Computer-Aided Engineering (CAE) activities in their operations. Also 60% of the companies considered in Ibadan metropolis apply CAE, of which 75% are into CAD, 12.5% are applying CAM whereas 12.5% are utilizing Computer Numerically Controlled (CNC) machines. Conclusively, the commonest CAD techniques employed by the industries surveyed are Auto CAD and Archi CAD representing 55.6% and 33.3% of the total packages being used in the visited companies respectively.
Ceramic engines: material properties for higher performance
(1998) Simolowo, O. E.
The four-stroke reciprocating internal combustion engine has been used as a case study, being that commonly utilized in most automobiles. General properties of ceramics were discussed while exposure was given to some high-performance ceramics. Theoretical deduction and analysis were then carried out to show improved engine performance using ceramic component. the engine performance parameter considered are:(i)power output (ii) mean effective pressure(iii) speed of engine rotation and (iv) mechanical efficiency. analysis based on ceramic properties showed that ceramics such as silicon carbide (SiC), silicon nitride(Si3N4), zirconia (ZrO2) and , titanium oxide (TiO2) proved to have more favourable properties for most engine parts when subjected to engine conditions where they are located as compared to their metallic, steel and alloy counterparts. Though much work has been done in the production of ceramic engines, predictions as to developing (i) adiabatic ceremic engines and (ii) turbo compounded engine show the extent to work that still needs to be done in this area of developing ceramic engines.
A composite wheel spanner
(2011) Simolowo, O. E.; Fagbemi, A.; Simolowo, E. O.; Adewole, S.; Akinro, O.; Dauda, A.; Ajibola, K; Adesoye, O.
A composite wheel spanner that simultaneously unscrews four wheel nuts/bolts of a Golf 4 Volks Wagon comprises the gear box casing (001) an enclosure of multiple gears and shafts that allows transmission of torque from the handle to the wheel bolts. The gears are located in the gear box and are held by shafts having keys and keyways. The gear shaft is an axle of the gear that provides rotation that allows a gear to engage with another gear while in operation. Spanner socket (002) fixed to the gear casing in a radial path are used in loosening the wheel bolts. The Handle (003) drives the gears by applying a whining force. The stand (004) and Base (005) hold together the gear box, the shafts and other elements.
A computer-based product classification and component detection for demanufacturing processes
(Taylor & Francis, 2011) Simolowo, O. E.; Mousavi, A.; Adjapong, P. O.
The aim of this paper is to propose a novel computer- based product classification, component detection and tracking for demanufacturing and disassembly process. This is achieved by introducing a series of automated and sequential product scanning, component identification, image analysis and sorting-leading to the development of a bill of material (BOM). The produced BOM can then be associated with relevant disassembly/ demanufacture proviso. The proposed intergrated image sorting and product classification (ISPC) approach can be considered as a step forward in automation of demanufacturing activities. The ISPC model proposed in this paper utilises and builds on the state-of-the-art technology and current body of research material and the factors that inhibits CIDR methods in practice are presented. A novel solution for the integration of imaging and material identification techniques to overcome some of the existing shortcomings of automated recycling processes is proposed in this paper. The proposed product scanning and component detection ISPC software consists of four distinct models:the repertory database, the search engine, the product-attributes updater and the image sorting and classification algorithm. The software framework that intergrates the components is presented in this paper. Finally, an overall assessment of applying ISPC at various stages of CIDR processes concludes the article.
Continous flow multi-stage grinder
(2011) Simolowo, O. E.; Aboyade, T. S.; Adetunji, H. A.
A continous flow multi-stage grinder for grinding grains and other applicable food products comprises of hopper(001) which recieves the grain or food item to be milled and channels it to the mill housing (002) to be milled in stages. The conveyor (003) carries the milled product from one stage on grinding to the next. contained in the mill housing at every stage are the grinding plates (004). The finally ground poduct comes out for collection through the discharge channel (005). Grinding is achieved by an arrangement of pulleys(006) and v-belts(007) driven by an electric motor (008). Motion is transmitted to the mill housing at the three grinding stages by the transmission shaft (009). The entire grinder and electric motor are supported on a frame (010) and base (011) respectively.
The design of Ogi sieving machine.
(2002) Simolowo, O. E.; Ndukwe, C. C.
In an attempt to ease the processing of Ogi (ground soaked corn in slurry form) a major staple food in Nigeria, especially among infants and thereby increase the rate of its consumption the manual process of sieving. Ogi has been studied and a new technological method has been developed to improve the sieving process of ogi. The mechanization of the ogi sieving process involves the design of a simple machine which operates based on theprinciple of suction pressure to achieve solid-iiquid separation of the Ogi mixture. The Ogi sieving machine has been designed and assembled in three stages to improve performance of the equipment Performance tests carried out on the machine designed show that the machine has a sieving flow rate of 11.1*10-5m3/s as compared with manual sieving flow rate of 3.02 *10 -5 m3/s
Developing a dynamic load-tracking learning-software for winch lift design
(2012) Simolowo, O. E.; Gbadebo, A.
"Many engineering applications involve the problem of a dynamic loading property which is often hard to track and critical in design analysis. The winch-lift design learning software developed in this work incorporates the graphical display of dynamic loading on the cable or rope of the winch lift within the first seconds of its operation. The learning software allows the user to generate a profile of this load and its acceleration against time in order to obtain the maximum value of the load to be borne by the whole unit. This feature is underplayed in most engineering software which usually uses the static total nominal load for simplicity. The overall program flow is in three sections based on the software architecture. They are the study, practice and the assessment sessions. At the validation stage, the results generated were compared with those obtained by numerical procedures in literature. The results were in the same range with differences in values of the order 0.1%. In conclusion, a learning software for exploring motorized winch systems has been developed in this work. "
Developing an imaging software for automated recycling processes (phase 1)
(2012) Simolowo, O. E.; Mousavi, A.
Several procedures have been proposed to overcome various challenges of product-content analysis after manufacturing and downstream automated recycling processes. These procedures have been restricted by factors such as the inability to determine exactly the physical state of the hidden parts of End-of-life products. This inhibition among others has resulted into an explosion of solutions by researchers. This paper presents the initial investigations in the development of imaging software. The software support a novel method of integrating scanned and digital imaging in material identification to overcome some of the existing shortcomings of automated recycling processes. The description of the software-algorithm structure and its centrality in post-manufacturing and automated recycling processes concludes this paper
Developing Archetypal Machines for a Sequence of Food-slurry processing operations: an overview
(2011-10) Simolowo, O. E.
"The importance of cereal gruel as a highly nutritious food for infants in many countries in Africa cannot be overstated. Conventional methods of producing The importance of cereal gruel as a highly nutritious food for infants in many countries in Africa cannot be overstated. Conventional methods of producing these food-slurries prior to their consumption as food cannot meet up with the high demand for these gruels This current work is targeted at developing various archetypal machines for the improvement of the production of these food slurries. Three prototype machines have been developed and discussed in this paper, namely, the suction sieving machine, the vibration sieving machine and the continuous flow multi-stage milling machine. The results of performance analyses on these archetypal machines are presented and compared to ascertain their efficiencies and their appropriateness for different operations respectively. The results show that the machines have increased the sieving rate of steeped grain and in extension the production of these food-slurries by over 50%. Design considerations for a dual processing machine-assembly that combines the sieving and milling processes into a single operation is herein presented as the focus for future works. Conclusively, this work presents a remarkable contribution to research on the improvement of the production of various cereals gruels in Nigeria and many developing nations through the introduction of new processing technologies. "
Developing of a computerized brain diagnosing system for case study analyses at a university teaching hospital in Nigeria
(IAARR, 2011-11) Ogunsanwo, O. D.; Akinola, S. O.; Simolowo, O. E.
"This research presents a conceptual procedure for characterizing the essential nature of the diagnostic reasoning process. This computerization of the medical neurological section of the University College Hospital Ibadan in Nigeria leads to effectiveness and efficiency of the existing medical diagnosing process. The main purpose of this project is to design a computerized brain diagnosing system that would be used in carrying out the daily diagnosing activity in the clinic. The developed computerized system has numerous advantages over manual operation which is very tedious and time consuming. As part of the research method, a set of clinical and ward observations were personally made confirming that the computerized system is prompt, less prone to errors and efficient. This work deals mainly with the analysis of the manual system and the computerization of the newly design system. Moreover, it explains how operations are carried out on records and use of data encryption method so as to ensure confidentiality in the use of the software. "
The development of an analyses-intensive software for improved cams systems design
(2008-04) Simolowo, O. E.; Bamiro, O. A.
The computer-aided software developed in this research work is used in designing cam systems by generating various follower motions and cam profiles. It is highly suited for extensive dynamics, kinematics and geometric design analysis based on some inherent features that are unique. The plate cam with either flat-face or roller followers can be designed. Most of the standard and acceptable cam functions are included such as double harmonic, modified trapezoidal, cycloid, 4-5-6 polynomial and others. Various prime circle radii and follower face widths are calculated for flat-face follower design option for any user selected cam angle, follower profile and cam function. Other parameters such as minimum and maximum values of radii of curvature, pressure angle, are also calculated for roller follower design option. In every design the follower motion and cam profiles are calculated and coordinate files can be exported in Cartesian format and automatically imported into a spreadsheet package thereby using all its features for better analysis of results. All dynamic, kinematics and geometric parameters can be plotted and all data may be printed to the screen, to a printer, or to a file.
Development of software algorithm for energy modeling and forecasting
(2012) Akintunde, O. A.; Simolowo, O. E.
"The problem of repetitive calculations involved in the comparative analysis of forecasted energy loads to determine the most applicable model out of a variety has been reduced by the development of a forecasting software algorithm done in this work. Three models and two test tools were catered for by the developed software at this preliminary stage. They are the linear, compound growth and cubic models while the test tools are the rank of correlation coefficient (ROCC) and the mean absolute percentage error(MAPE).The numerical modelling and forecasting procedures were presented and an algorithm flow chart was subsequently developed for the software. The programming language selected for the design of the software is MATLABJ because of its versatility in mathematical applications. On the completion of thesoftware, it was applied to an existing energy consumption case study available in literature to ascertain its reliability. The results obtained were in the range of the estimations found in literature. "
Effect of desing parameters on CAM profiles
(2003) Simolowo, O. E.; Udoh, E. A.
"In the process of generating a cam profile, input parameters such as lift maximum allowable pressure angle, eccentricity and roller radius are subjected to variations. These variations are done in order to arrive at optimum output design parameters, cam profiles and ultimately optimum cam design. A computer aided analysis of cam profiles with eight - order - polynomial motion using a roller follower and having a Dwell- Rise - Return. displacement profile has therefore being carried out in this work. The analysis, in a similar procedure, is also applicable to cam profiles with different standard cam motions, followers, displacement profiles and cam angles. The followers lift, maximum allowable pressure angle, eccentricity and roller radius were varied within and outside design limits and their effects ana lysed on the generated cam profiles and other design parameters. Optimum values for the parameters considered were obtained from the result of the variation analysis, while characteristic changes were also observed from the generated cam profiles. "
The effect of tribological processes on productivity: a case study of industries in Ibadan metropolis of Nigeria
(2009-05) Simolowo, O. E.; Adeniji, O. O.
This study analyzed the connection between tribological and other forms of processes in manufacturing industries to productivity in such outfits. Results from the study showed that 54% of the visited industries recorded the highest hours of downtime due to tribological processes, while,15% and 31% of the industries had the highest downtimes hours resulting from electrical and other processes respectively. Also 23% of the total industries were observed to have more electrical faults, 31% recorded highest tribological issues, while 46% had more of non-tribological non-electrical faults.
Energy-cost analysis of alternative sources to electricity in Nigeria
(Indian Society for Education and Environment (iSee), 2012-01) Simolowo, O. E.; Oladele, S.
In this work, a comparative analysis of alternative energy sources has been carried out to ascertain their suitability in terms of availability, cost, advantages and disadvantages among other factors. The selected energy alternatives are solar and inverters. The first case study-site was an office suit located in government reserved area and the second a medium house unit within Lagos the most commercial city in Nigeria. Practical surveys and data collection were carried out for the selected sites coupled with their energy auditing to obtain the total energy consumed. An energy sizing analysis helped in determining the energy specifications and installation-cost of the alternative energy sources in the surveyed sites. The results obtained presented guiding principles among other solutions on how homes and offices canbe powered by applying the method of selective-loading to reduce energy cost.
In this work, three models are used to analyze the electric load capacity of a fast growing urban city and to estimate its future consumption. Ikorodu, the case-study location is a highly populated city whose energy demand is continuously increasing. The ultimate focus of this study is to establish a basis for the comparison of different electric load consumption for the existing populace and to provide estimates for the future planning of the city. In this work, three different models have been used to present more accurate load predictions and to enhance proper comparison of results. Among numerous mathematical and scientific models that are applicable to this kind of task, the compound-growth method, the linear model approach and the cubic model have been chosen to enhance diversity in load analysis. The futuristic scheme to be harnessed will fall within the ranges of values obtained from the three different models used in forecasting. This paper concludes with issues pertaining to economics of load utilization as it affects substantive planning.
(International Association of African Researchers and Reviewers, 2012-01) Eneje, I. S; Fadare, D. A.; Simolowo, O. E.; Falana, A.
In this work, three models are used to analyze the electric load capacity of a fast growing urban city and to estimate its future consumption. Ikorodu, the case-study location is a highly populated city whose energy demand is continuously increasing. The ultimate focus of this study is to establish a basis for the comparison of different electric load consumption for the existing populace and to provide estimates for the future planning of the city. In this work, three different models have been used to present more accurate load predictions and to enhance proper comparison of results. Among numerous mathematical and scientific models that are applicable to this kind of task, the compound-growth method, the linear model approach and the cubic model have been chosen to enhance diversity in load analysis. The futuristic scheme to be harnessed will fall within the ranges of values obtained from the three different models used in forecasting. This paper concludes with issues pertaining to economics of load utilization as it affects substantive planning.
Modelling and forecasting periodic electric load for a metropolitan city in Nigeria
(2012-01) Eneje, I. S.; Fadare, D. A.; Simolowo, O. E.; Falana, A.
"In this work, three models are used to analyze the electric load capacity of a fast growing urban city and to estimate its future consumption. Ikorodu, the case-study location is a highly populated city whose energy demand is continuously increasing. The ultimate focus of this study is to establish a basis for the comparison of different electric load consumption for the existing populace and to provide estimates for the future planning of the city. In this work, three different models have been used to present more accurate load predictions and to enhance proper comparison of results. Among numerous mathematical and scientific models that are applicable to this kind of task, the compound-growth method, the linear model approach and the cubic model have been chosen to enhance diversity in load analysis. The futuristic scheme to be harnessed will fall within the ranges of values obtained from the three different models used in forecasting. This paper concludes with issues pertaining to economics of load utilization as it affects substantive planning. "
Multipurpose machine for sieving "ogi" slurry
(2011) Simolowo, O. E.; Adeniji, O. O.
A multipurpose machine for sieving 'Ogi' (ground com slurry) and other applicable grain slurry comprises the sieving container (003) which receives water frorn an external water unit {OI2) and the slurry 'Ogi' to be sieved through a hopper. Sieving is achieved by an arrangement of vibration and sitting mechanism (&13) which is electrically driven (009) by a motor. Depending on the type of ground grain slurry, interchangeable assembly of sieving arrangement are applied within the sieving unit to account for the multipurpose usage of the machine.
Performance analysis of a modified pneumatic separator for cowpeas
(2007-12) Simolowo, O. E.; Araromi, O. T.; Adesanya, O. O.
In this work, modifications have been done on a prototype pneumatic separator to improve its efficiency. The effects of the modifications were studied by carrying out performance test analyses on the two blowers and reciprocating sieve mechanism which make up the critical components of the separating machine. The variations in the feed weights of the sieve were analyzed to determine the best and most effective screening process. Also, the best and least tilt angles of the blowers were considered to determine the best and least blowing processes to clean the beans. The results of analyses showed that for a feed weight of 3.0kg the sieving process attained its best efficiency of 50.2%. The maximum efficiency of 79.2% for the first pneumatic separator was obtained at a tilt angle of 30°, while a maximum of 77.7% was obtained for the second separator at 0° tilt angle. An overall efficiency of 77% was estimated for the modified pneumatic separator.