Browsing Research articles (Dept of Mechanical Engineering) by Title
Now showing items 21-40 of 48
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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 ... -
A fourier method of determining the speed fluctuation coefficient of a general slider-crank mechanism
(University of Botswana, 2001)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 ... -
Fundamentals of coal gasification technology and its relevance to Botswana coal industry
(University of Botswana, http://www.ub.bw, 1999)Coal is plentiful in many parts of the world but its combustion can create severe environmental and aesthetic problems.In the past three decades, the cost of crude oil and natural gas has been unstable and the reserves of ... -
Introduction to general education courses to engineering programmes at the University of Botswana
(Tempus Publications http://www.ijee.ie/, 2009)Complementary studies are fundamental for accreditation of engineering programmes in line with the Washington Accord. This paper presents the experiences of the University of Botswana in introducing General Education Courses ... -
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 ... -
The level of recycling operations in Botswana
(University of Botswana, www.ub.bw, 2004)This paper describes a case study that evaluated the level of recycling operations in Botswana. Recycling operations are now recommended as effective waste management strategies for reducing the amount of municipal solid ... -
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 ... -
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 ... -
Marula oil and petrodiesel: a comparative performance analysis on a variable compression ignition engine
(Scientific Research Publishing, http://www.scirp.org/, 2011-07)The quest for biofuel production and use in Botswana is driven by factors including volatile oil prices, need for fuel security, potential for job creation, potential reduction in greenhouse gas emissions, and economic ... -
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 ... -
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 ... -
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 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 ... -
Oxide of nitrogen in diesel engines: formation, effects and control
(University of Botswana, 2001)Diesel engines are used in heavy duty applications because of their high effeciency an reliability. However, oxides of nitrogen emissions remain a major concern. In diesel engines, fuel combustion is responsible for a major ... -
Performance and emission characteristics of tylosema esculentum biodiesel in a diesel engine: an experimental investigation
(David Publishing, http://www.davidpublishing.com/, 2014-01-31)Biodiesel derived from indigenous feed stocks such as Tylosema esculentum kernel oil is deemed a feasible alternative to petroleum diesel for the diesel engine. This paper presents results of investigation of performance ... -
Performance evaluation of commonly used oil ram press machines
(CIGR Journal http://www.cigrjournal.org/, 2007)The ram-press technology for oil expression has received a lot of attention in many African countries during the last two decades. The technology is based on manually operated mechanical presses, which employ a slider-crank ... -
A practical model for development of viable engineering education institutions in Africa: with a focus on management and quality of engineering eduation
(University of Botswana, www.ub.bw, 2001)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 Biluch (1989), Garelli et al ... -
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 ... -
PSPICE model of an open-circuit DC shunt machine
(University of Botswana, 2000)Computer models are used to replicate the essential performance features of a physical element using convenient modeling and simulation programs. Within SPICE, an acronym for the Simulation Program with Integrated-Circuit ... -
A review of mining taxation in selected SADC countries and Chile
(University of Botswana, http://www.ub.bw, 2004)Although most SADC countries have or were in the process of liberalizing their legislation and fiscal regimes some member states seemed to levy exorbitant tax rates. SADC members’ states need to note that in designing the ...