Browsing Masters Degrees (Mechanical and Mechatronic Engineering) by Title

Now showing items 258-277 of 311

    • Screening for abnormal heart sounds and murmurs by implementing neural networks 

      Visagie, Claude (Stellenbosch : University of Stellenbosch, 2007-03)
      This thesis is concerned with the testing of an “auscultation jacket” as a means of recording heart sounds and electrocardiography (ECG) data from patients. A classification system based on Neural Networks, that is able ...

    • Seakeeping control of HYSUCATs 

      Milandri, Giovanni Sergio (Stellenbosch : University of Stellenbosch, 2006-03)
      This thesis investigates practical methods of modelling and control of the vertical motions of a hydrofoil assisted catamaran, the HYSUCAT. The aim of the control application is to reduce the motions, and consequently ...

    • Second order analyses methods for stirling engine design 

      Snyman, H. (Stellenbosch : University of Stellenbosch, 2007-03)
      ENGLISH ABSTRACT:In the midst of the current non-renewable energy crises specifically with regard to fossil fuel, various research institutions across the world have turned their focus to renewable and sustainable ...

    • Semi-automatic extraction of primitive geometric entities from point clouds 

      Goussard, Charl Leonard (Stellenbosch : Stellenbosch University, 2001-12)
      ENGLISH ABSTRACT: This thesis describes an algorithm to extract primitive geometric entities (flat planes, spheres or cylinders, as determined by the user's inputs) from unstructured, unsegmented point clouds. The ...

    • Simulation and control implications of a high-temperature modular reactor (HTMR) cogeneration plant 

      Tshamala, Mubenga Carl (Stellenbosch : Stellenbosch University, 2014-04)
      ENGLISH ABSTRACT: Traditionally nuclear reactor power plants have been optimised for electrical power generation only. In the light of the ever-rising cost of dwindling fossil fuel resources as well the global polluting ...

    • Simulation based calibration of turbo-charger boost control 

      Pienaar, Schalk Willem (Stellenbosch : University of Stellenbosch, 2007-12)
      Electronic engine control systems utilise tables, or maps, of data to determine the set-points of the various actuators on the engine and to calculate the values of variables that cannot be directly measured. To ensure ...

    • Simulation of a syngas from coal production plant coupled to a high temperature nuclear reactor 

      Botha, Frederick Johannes (Stellenbosch : Stellenbosch University, 2012-12)
      ENGLISH ABSTRACT: In light of the rapid depletion of the world’s oil reserves, concerns about energy security prompted the exploration of alternative sources of liquid fuels for transportation. One such alternative is ...

    • Simulation of flow inside the storage tank and piping of a thermosyphon type solar water heater 

      Fourie, Tinus von Gericke (Stellenbosch : Stellenbosch University, 2016-03)
      ENGLISH ABSTRACT: Even though Southern Africa has some of the highest solar resource in the world, solar water heaters are not as widely implemented as elsewhere on the planet. Reasons for this include the high upfront ...

    • The simulation of the flow of polymer melt in lomolding 

      Dymond, Jacques Andrew Dryden (2004-12)
      ENGLISH ABSTRACT: Lomolding is a new process similar to injection moulding. In this thesis a numerical model of the polymer flow into the cavity is presented. The model is used to compare the two processes with each ...

    • Simultaneous measurement of air flow conditions and resultant blade and gearbox loading at large-scale cooling system fans 

      Muiyser, Jacques (Stellenbosch : Stellenbosch University, 2012-12)
      ENGLISH ABSTRACT: Axial flow fans used in large-scale air-cooled steam condensers (ACSCs) may operate under distorted inflow conditions. These conditions occur due to the prevailing wind conditions, the presence of ...

    • Small solar organic rankine cycle for electricity generation 

      Lombard, Hans Jurgens (Stellenbosch : Stellenbosch University, 2015-12)
      ENGLISH ABSTRACT: The global the demand for energy has risen dramatically in recent years and the cost of electricity has risen considerably. Local electricity sales prices followed the global trend, increasing by an ...

    • Solar air receiver using a non-uniform porous medium 

      Van Der Merwe, Philippus Carel (Stellenbosch : Stellenbosch, 2016-03)
      ENGLISH ABSTRACT: A receiver concept for a CSP plant employing a Brayton cycle solar thermal power plant was designed and tested experimentally. The receiver aims to mimic the greenhouse effect and comprises of an annular ...

    • Solar assisted power generation (SAPG) : investigation of solar preheating of feedwater 

      Pierce, Warrick Tait (Stellenbosch : Stellenbosch University, 2013-03)
      ENGLISH ABSTRACT: Solar Assisted Power Generation (SAPG) can be seen as a synergy of solar and fossil plants – combining the environmental benefits of the former and the scale, efficiency and reliability of the latter. ...

    • Solar Tower Power Plant Performance Characteristics 

      Pretorius, Johannes Petrus (Stellenbosch : University of Stellenbosch, 2004-04)
      ENGLISH ABSTRACT: This study investigates energy generation by large-scale solar tower power plants. The performance characteristics of a so-called reference plant with a 4000 m diameter glass collector roof and a 1500 ...

    • The specification of a small commercial wind energy conversion system for the South African Antarctic Research Base SANAE IV 

      Stander, Johan Nico (Stellenbosch : Stellenbosch University, 2008-12)
      The sustainability and economy of the current South African National Antarctic Expedition IV (SANAE IV) base diesel-electric power system are threatened by the current high fuel prices and the environmental pollution ...

    • Stability and control characteristics of model helicopters 

      Visagie, Jonathan Gerhardus (Stellenbosch : Stellenbosch University, 2004-12)
      ENGLISH ABSTRACT: A need exists for the development of an unmanned rotorcraft capable of autonomous flight, as would be required for the survey of high voltage electricity supply lines. A program was initiated at ...

    • A stand-alone parabolic dish solar cooker for African conditions 

      Craig, Omotoyosi Onalapo (Stellenbosch : Stellenbosch University, 2015-12)
      ENGLISH ABSTRACT: The reduction in the availability and the ever-increasing prices of fossil fuels, as well as the expensive and insufficient electricity supply, are some of the reasons explaining why the public awareness ...

    • Steam flow distribution in air-cooled condenser for power plant application 

      Honing, Werner (Stellenbosch : University of Stellenbosch, 2009-12)
      ENGLISH ABSTRACT: Air-cooled steam condensers are used in arid regions where adequate cooling water is not available or very expensive. In this thesis the effect of steam-side and air-side effects on the condenser performance, ...

    • Steam flow distribution in air-cooled condensers 

      Zipfel, Toni (Stellenbosch : Stellenbosch University, 1996-03)
      ENGLISH ABSTRACT: In this thesis the parameters affecting the steam flow distribution through an air-cooled steam condenser, as found in power generating plants is investigated. The investigated condenser configuration ...

    • Steam jet ejector cooling powered by low grade waste or solar heat 

      Meyer, Adriaan Jacobus (Stellenbosch : University of Stellenbosch, 2006-12)
      A small scale steam jet ejector experimental setup was designed and manufactured. This ejector setup is of an open loop configuration and the boiler can operate in the temperature range of Tb = 85 °C to 140 °C. The typical ...