DEPARTMENT OF MECHANICAL ENGINEERING
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Item Impact of technology (engineering) on business operations in Nigeria (1960-1998)(2000) Odesola, I. F.Despite the low-level of Technological inputs and assimilation in Nigeria in general, Business operations have benefited considerably from Technology. Technology input have been in form of vastly improved communications, power availability, distribution, new tools of machinery for production, and health facilities. In this paper, the situation of Transportation and Food industries are focused on in respect of great changes that have taken place therein. Suggestion on the practical way of having greater progress are listed to serve as guides for policy makers in the country.Item Design and construction of a plastic melting pot for low density polyethylene (LDPE)(1999) Odesola, I. F.; Bomide, A. K.In this project a melting pot was designed and constructed using available local materials. This pot was used to melt plastic resin without the resin-changing colour (turning brown). The project was divided into two parts: the design and construction aspect and the control aspect. A good temperature control was incorporated to achieve high quality output. The construction was carried out using galvanized mild steel. In this project a melting pot was designed and constructed using available local materials. This pot was used to melt plastic resin without the resin-changing colour (turning brown). The project was divided into two parts: the design and construction aspect and the control aspect. A good temperature control was incorporated to achieve high quality output. The construction was carried out using galvanized mild steel. It consists of a cylindrical enclosure that is divided into two chambers: the upper and larger one house the melting unit, the lower chamber houses sensing element of the temperature control equipment. The instrument used for the temperature control is a thermostat which has a temperature range of 0-200°. The dimension of the material used for the fabrication was based on the least thermal difference so that equilibrium can be achieved in a short time .Tests carried out after the construction of the prototype confirmed the relevancy of the project. The pot melted the plastic resin and flowed without change of colour.Item Activated carbon from agricultural waste: process description and economic analysis(2009) Oiogun, O. O.; Oyekeye, O. M.; Odesola, I. F.Adsorption refrigeration technology has been intensively investigated in many countries of the world because of its promising potential for competing with conventional vapour compression refrigeration, its relatively low operating cost and its environmental friendliness. The search for a good adsorbent for solar powered refrigeration technology has led to various attempts to manufacture activated carbon of high adsorptive property. In this study coconut shells plus 10% animal bones, agricultural wastes, were used as basic raw materials for the local production of activated carbons. The properties determined were the particle size diameter, iodine no, hardness no, bulk density, and tamped density of the activated carbon samples. The results for the coconut shells only of mesh size 14 and maximum particle size of 2.36mm are: iodine no, 906.68mg/g, hardness no, 1, bulk density, 0.504g/ml, tamped density, 0.562g/ml and ash content, 0.012%; while that of the coconut shells with 10% bones of mesh size 14 and maximum particle size of 2.36mm are: iodine no, 870.51mg/g, hardness no, 1, bulk density, 0.585g/ml, tamped density, 0.604g/ml and ash content, 0.06%. In comparison with the imported activated carbons these can be classified as medium grade carbons, This work has established the fact that activated carbons, the principal component for solar powered refrigeration technology can be locally sourced without compromising standards.Item A review of porous evaporative cooling for the preservation of fruits and vegetables.(2009-11) Odesola, I. F.; Onyebuchi, O.The review of a porous evaporative cooler for the preservation of fruits and vegetables are reported in this paper. The different types of evaporative cooler designs under review include: pot-in-pot, cabinet, static, and charcoal cooling chambers. The gap between them is either filled with a jute, damp cloth, or sand. Water is linked to the cooler at the top, thus keeping the chamber cooled. The result of transient performance of the cooler revealed a depression in temperature in the storage chamber. Thus, the evaporative cooler has prospect for use for short term preservation of vegetables and fruits soon after harvest.Item Rehabilitation of pumps: case study of universal pump set(2003-04) Odesola, I. F.; Ehinmowo, A. A.Laboratory equipment is meant to impart some modules of knowledge unto students of engineering and applied sciences. In other words they are to bridge the gap between theory in the classroom and practical on the field. When there is no sufficient fund to keep this equipment in good condition other avenues must be looked into to avert the dangers of training Engineers and Technicians without the necessary exposure to Laboratory practicals. Equipment worth millions of Naira are lying waste in many institutions of higher learning because nobody cared to take the bull by the horns. The purpose of this project is to rehabilitate laboratory equipment that had been abandoned for many years due to malfunctioning of one or two components. The approach adopted here was to find out the root cause of the problem and proffered a solution. This was done in the case of Universal Water Pump Set located in the fluid laboratory of Mechanical Engineering Department, University of Ibadan, Ibadan. The rig was tested after the repair and maintenance exercises were carried out. The results of performance characteristics carried out on the equipment confirmed that it has been brought back to life. Two laboratory exercises were prepared for each pump to be used by the students as from the next session. The total cost of rehabilitation excluding labour was N1700.00.Item Performance evaluation of a gas (butane) fired oven(2001-11) Odesola, I. F.; Akinlade, D. O.; Fayemi, B. O.A gas-fired oven for commercial production of bread was designed and constructed using locally available material and was subjected to various tests to come out with its performance characteristics. Its performance was evaluated arid then compared with respect to the total time required to bake a specified mass of white flour dough using the gas oven with that used by clay wood fired oven for the same mass of white flour dough. The outcome of the test result indicated that the maximum temperature attained by the oven was 400°C with the gas control valves at close to the maximum point (without load). This temperature was attained seven minutes after firing the oven. The clay wood fired oven tested attained a peak temperature of 280°C one hour after it was fired. White flour dough of mass 0.2kg was baked in the gas fired oven in thirty nine minutes (first load), this corresponds to the total baking time. The same unit mass of dough was baked in the wood fired oven in a total baking time of eight-five minutes. A test carried out on the insulating machine, sawdust, showed that it minimized the heat loss from the oven by maintaining a high temperature gradient between the inside wall and the outer wall of the oven. The preliminary economic analysis of the cost of production of the oven and the cost of fuel showed that is cost effective and viable.Item Performance evaluation of a locally fabricated crusher (hammer mill)(2002) Odesola, I. F.; Olamide, O. O.; Sanni, W. A.A bone-crusher (Hammer Mill) was designed, constructed and tested. The machine was designed to crush 1000kg of bones in one hour. The motor operating speed employed is 2920rpm, the sieve hole diameters are 7mm and 5mm while the numbers of hammers are 12 and 18 pieces. The performance tests show that the mill is capable of crushing between 860 to 1170kg within an hour.Item A PC- based simulation package for engineering students and professionals on compressible flow(2003-04) Odesola, I. F.; Bamiro, D.Both Engineering students and practicing Engineers are involved in the design and analysis associated with fluid mechanics and thermo-dynamics problems. For them to be very efficient and proficient in handling various problems there is need for scientific data and general information in forms of tables or graphs. These must be made available in a compact form. In this paper a successful attempt was made to make available this aforementioned data in respect of compressible flow. All the equations concerned are brought together in a simplified form and programmed to generate useful data for various gases of interest on compressible flows. Analysis of compressible fluid flow becomes very easy if one has access to information as presented in this paper.Item Finite element analysis of a transient 2-dimensional heat conduction problem(2002) Odesola, I. F.; Adeogun, S. A.The analysis of a transient 2-Dimensional heat conduction problem by the Finite Element Method is hereby presented. The solution approach was that of partial discretisation : 4-node isoparametric elements were used in the discretisation of the problem domain in the spatial coordinate, while linear temporal elements are used in the discretisation of the time domain. The Galerkin's Weighted Residual Method was used in the development of the system equation in the space domain, and their transformation into the time domain. The resulting system of equation, which is a two-point recursive relation,was solved using the Gauss - Cholesky Method. The developed algorithm was used on a linear, transient 2-Dimensional problem, and the results obtained were an improvement on those obtained by Bruch, J. C . and Zyvoloski , G.Item Duct design and performance: a case study of a University senate chamber(2002) Odesola, I. F.; Ndubuisi, C. U.; Ogbolu, N. D.This paper present the design of a central air-conditioning /ducting system for a case study of a University Senate Chamber in Nigeria. The design aims at maintaining conditions that are conducive to human comfort within the senate chamber of the University. (24°C - 25.5°C, 50% - 55% RH). The design month was March (6) and using the expert assistance found in the carrier system design ducting analysis manual the refrigeration tonnage obtained was 40 and the total air quantity required to remove the heat load was 9908cfm. Low velocity with equal friction method was used in the ducting analysis. Equipment selection was carried out for the proposed system. A simulation was carried on the proposed system to estimate the relative humidity and temperature at various times. Another test was carried out on the actual (existing unit) to estimate relative humidity and temperature at various times and positions within the chamber. A comparison of the simulated and tested values with standard comfort conditions reveals that the new design will certainly give more comfort.