Mechanical Engineering: Recent submissions
Now showing items 21-40 of 48
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Acceptance of blackboard technology by mechanical engineering students at the University of Botswana
(Tempus Publications, 2009)Technology-based teaching and learning is entering academic life at an amazing rate. It comes whether invited or not. Students and lecturers are confronted with new technologies. There are new teaching methods to accompany ... -
Investigating the pumping process of a resonance-vibrating pump for medium-depth boreholes
(Research in Agricultural Engineering http://journals.uzpi.cz/web/RAE.htm, 2007)This paper deals with the pumping process of a resonance-vibrating pump, which utilizes the resonance vibrations of one degree-of-freedom oscillating system. The pump is powered by a mechanical shaker consisting of ... -
Management of waste oil in Botswana and the possibilities of energy recovery from waste oil
(University of Botswana, 1998)Since independence, the economy of Botswana has been undergoing a rapid transition from one in which the majority of the people depend on traditional agriculture and pastoralism to one in which formal sector employment ... -
A new and innovative look at anti-insulation behaviour in building energy consumption
(Elsevier http://www.linkinghub.elsevier.com/retrieve/pii/S0378778808000923, 2008)This paper presents the findings of a case study with building simulation using EnergyPlus dynamic thermal simulation software, in which wall insulation was varied together with cooling set-point temperature in a hot and ... -
Total solar radiation received at various collector inclinations
(Elsevier Science Ltd, http://www.elsevier.com/wps/find/journaldescription.cws_home/405891/description#description, 1994)Solar energy is finding wide application via several energy-saving devices and systems. Its use, especially in rural areas, can often be limited by the non-availability of complete information on insolation data. In this ... -
Mean global radiation captured by inclined collectors at various surface azimuth angles in Nigeria
(Elsevier Science Ltd, http://www.elsevier.com/wps/find/journaldescription.cws_home/405891/description#description, 1995)The use of solar energy is well established for low-grade thermal applications such as water heating and purification. In many of the solar systems, the collector surface located in the Northern Hemisphere faces the true ... -
Energy applications in Botswana
(Elsevier Science Ltd, http://www.elsevier.com/wps/find/journaldescription.cws_home/269/description#description, 1995)Botswana depends heavily on imported petroleum products for all premium applications. However, there is an abundant reserve of coal and other alternative sources of energy. This paper presents the energy trends and the ... -
Some implications of driver training for road accidents in Gaborone
(Elsevier Science Ltd, http://journals.elsevier.com/00014575/accident-analysis-and-prevention/, 1995)In many African countries, including Botswana, the driving schools and instruction given to pupils are uncontrolled. Thus, this paper presents the results of an investigation into the level of professional training offered ... -
Energy and exergy analyses of energy consumptions in the industrial sector in South Africa
(Elsevier Science Ltd, http://www.elsevier.com/locate/apenergy, 2007)The energy-utilization over a 10-year period (1994–2003) has been analysed for the South African industrial sector, which consumes more primary energy than any other sector of the economy. Four principal sub-sectors, ... -
Theoritical analysis of an offset single-stroke ram press for sunflower oil extraction
(International Symposium on Theory of Machines and Mechanisms (IFToMM), 2001)The single-stroke ram press machine is widely used for sunflower oil extraction in African countries. It is manually operated, low speed machine constructed on the basis of slider-crank mechanism. The paper presents a ... -
Continuing professional development for practicing engineers in developing economies
(Institute of Electrical and Electronics Engineers (IEEE), http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=13, 1999-08)This paper presents the results of an investigation to determine the level of continuing professional development (CPD) for engineers in developing countries. Questionnaires were administered randomly to engineers of ... -
A fourier method of determining the speed fluctuation coefficient of a general slideer-crank mechanism
(University of Botswana, Faculty of Engineering and Technology, http://ajol.info/index.php/bjt, 2001-10)In this paper a method is presented which enables the solution of the equation of motion of the slider-crank mechanism. Expansion of functions into Fourier series is used in this method, whereby the solution of the equation ... -
Domestic use of electrical energy from wind energy in Botswana
(University of Botswana, Faculty of Engineering and Technology, http://ajol.info/index.php/bjt, 1998-04)This paper presents an examination of the possibility of using wind turbines generating electricity for households in the remote rural areas of Botswana. On the basis of theoretical consideration of the wind system generating ... -
Towards a systems approach to sustainable development
(University of Botswana, Faculty of Engineering and Technology, http://ajol.info/index.php/bjt, 2003-04)“Sustainable development” as a concept was popularised by a 1987 report of the United Nations World Commission on Environment and Development. The report defined sustainable development as “development that meets the needs ... -
Management of waste oil in Botswana and the possibilities of energy recovery from waste oil
(University of Botswana, Faculty of Engineering and Technology, http://ajol.info/index.php/bjt, 1998-04)Since independence, the economy of Botswana has been undergoing a rapid transition from one in which the majority of the people depend on traditional agriculture and pastoralism to one in which formal sector employment ... -
Modelling and simulation of an air motor system using extended radial basis algorithm
(University of Botswana, Faculty of Engineering and Technology, http://ajol.info/index.php/bjt, 2007-04)This article proposes a new modeling scheme using extended radial basis function (RBF) and adaptive neuro-fuzzy filter for handling nonlinear uncertainties of an air motor servo valve. This model combines the fast model ... -
A practical model for development of viable engineering education institutions in Africa: With a focus on management and quality of engineering education
(University of Botswana, Faculty of Engineering and Technology, http://ajol.info/index.php/bjt, 2001-10)One of the critical elements that determine the competitiveness of nations is the population density of, and quality of, its engineers. This view has been corroborated by researchers such as Bilich (1989), Garelli et al ... -
Measurement of operating forces in a ram press crushing sunflower seed
(Blackwell Publishing Ltd, http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1475-1305, 2009)This study presents the experimental setup and results of measurement of forces and moments in a manually operated ram press machine. Tests were conducted on a BP30 ram press using electrical resistance strain gauges to ... -
Application of enamel-coating for draught reduction of a mouldboard plough
(Akademiai Kiado, 2007)The effect of enamel-coating on the draught performance of an animal-drawn mouldboard plough was studied. A single furrow swing mouldboard plough-Maun Series, and the same type enamel-coated plough both ox-drawn, are ... -
Automobile pollution and the environment
(University of Botswana, 1999)It is widely recognised that air pollution caused by the global rapid increase of automobile traffic is a threat to the environment. With regard to automobiles there are three general areas of concern: urban pollution, ...