Browsing Masters Degrees (Mechanical and Mechatronic Engineering) by Title

Now showing items 171-190 of 304

    • Latent heat thermal energy storage for solar water heating using flat heat pipes and aluminum fins as heat transfer enhancers 

      Malan, Daniel Johannes (Stellenbosch : Stellenbosch University, 2014-12)
      ENGLISH ABSTRACT: Solar energy is a time dependent, high-temperature radiant energy resource. The utility of a solar thermal energy system increases if the hot temperature source is available when it is needed most. This ...

    • A liquefied gas thruster for a micro satellite 

      Joubert, Adriaan Jacobus (Stellenbosch : University of Stellenbosch, 2007-03)
      The focus of this project was to investigate the working of a liquefied gas micro satellite thruster. An introduction is given in which the significance of the project in relation to the literature is stated. The objectives ...

    • Liquid petroleum gas as automotive fuel in South Africa 

      Van der Ham, Gert A. (Stellenbosch : Stellenbosch University, 2001-12)
      ENGLISH ABSTRACT: The trends in worldwide fuel consumption and availability were studied, these indicated a bigger growth in gaseous fuel use than that of crude oil over the last decade. The economics (cost of converting ...

    • Losses in the inlet section of counterflow wet-cooling towers 

      De Villiers, Eugene (Stellenbosch : Stellenbosch University, 1998-12)
      ENGLISH ABSTRACT: The flow resistances in the inlet sections of counterflow wet-cooling towers are investigated and correlations are derived for inclusion in a one-dimensional tower performance model. The rain zone loss ...

    • Low blood oxygen saturation quantification in human arterial and venous circulation 

      Schoevers, Jacobus Engelbertus (Stellenbosch : Stellenbosch University, 2008-03)
      ENGLISH ABSTRACT: Conventional pulse oximetry has limited accuracy in measuring blood oxygen saturation in low saturation and perfusion scenarios. This limits the application of pulse oximetry in patients su ering from ...

    • Machining of powder metal titanium 

      Sobiyi, Kehinde Kolawole (Stellenbosch : University of Stellenbosch, 2011-03)
      ENGLISH ABSTRACT: The purpose of this study is to investigate the machinability of commercially pure (CP) titanium, manufactured using the press-and-sinter PM process. To this end, CP titanium powder (-200 mesh) was ...

    • Material models for rail pads 

      Heunis, Johannes Jacobus (Stellenbosch : University of Stellenbosch, 2011-03)
      ENGLISH ABSTRACT: The vibrations and noise “pollution” that rail vehicles produce have become of particular concern in recent years. More pressure is being placed on operators of trains and trams (especially those operating ...

    • A MEMS based valveless micropump for biomedical applications 

      Van der Merwe, Schalk Willem (Stellenbosch : University of Stellenbosch, 2010-03)
      ENGLISH ABSTRACT: The valveless micropump holds great potential for the biomedical community in applications such as drug delivery systems, blood glucose monitoring and many others. It is also a critical component in ...

    • A micro approach to quantitative dehydration sensor development 

      Visser, Cobus (Stellenbosch : Stellenbosch University, 2015-03)
      ENGLISH ABSTRACT: The assessment of dehydration is an ever elusive golden standard, even given the plethora of hydration markers that exist to date. Many literature sources acknowledge the need for a portable device that ...

    • Modeling and verification of valve train dynamics in engines 

      Husselman, M. (Stellenbosch : University of Stellenbosch, 2005-12)
      This study involved the modeling and verification of the finger follower valve train arrangement with the focus on the non-linear behaviour of high speed valve springs. The project was divided into three phases namely; ...

    • Modeling of internal combustion engine thermodynamics, valve dynamics and valve flow 

      Williams, Paul Ngcebo Tudor (Stellenbosch : Stellenbosch University, 2002-12)
      ENGLISH ABSTRACT: In the design or modification of internal combustion (IC) engine components, the South African Automotive industry has always relied on either design by mother companies or quasi-empirical design ...

    • The modelling and control of an automotive drivetrain 

      Northcote, Nicholas M.  (Stellenbosch : University of Stellenbosch, 2006-03)
      Shunt and shuffle in a vehicle drivetrain are two driveability related phenomena responsible for driver discomfort. They are experienced as a sharp jerk (shunt) followed by a series of longitudinal oscillations (shuffle) ...

    • Modelling and design of a novel air-spring for a suspension seat 

      Holtz, Marco Wilfried (Stellenbosch : University of Stellenbosch, 2008-03)
      Suspension seats are commonly used for earth moving machinery to isolate vehicle operators from vibrations transmitted to the vehicle body. To provide the required stiffness and damping for these seats, air-springs are ...

    • Modelling and design of an oscillating wave energy converter 

      Fairhurst, Jason (Stellenbosch : Stellenbosch University, 2015-12)
      ENGLISH ABSTRACT: This thesis presents the experimental testing and development of a time-domain simulation model for a wave energy converter based on the principles of an oscillating water column. The device was developed ...

    • Modelling and verification of the dynamics of an ocean current energy converter 

      Graaff, Simon (Stellenbosch : Stellenbosch University, 2014-12)
      ENGLISH ABSTRACT: South Africa has a signi cant potential resource for electrical power generation in the Agulhas Current on the southeast coast. The Ocean Current Energy Convertor studied in this project was designed ...

    • Modelling of a passive reactor cavity cooling system (RCCS) for a nuclear reactor core subject to environmental changes and the optimisation of the RCCS radiation heat shield heat shield 

      Verwey, Aldo (Stellenbosch : University of Stellenbosch, 2010-03)
      ENGLISH ABSTRACT: A reactor cavity cooling system (RCCS) is used in the PBMR to protect the concrete citadel surrounding the reactor from direct nuclear radiation impingement and heat. The speci ed maximum operating ...

    • Modelling of a thermodynamically driven heat engine with application intended for water pumping 

      Craig, Rob James (Stellenbosch : Stellenbosch University, 2014-12)
      ENGLISH ABSTRACT: See PDF for abstract.

    • Modelling of dragline dynamics 

      Crous, Pieter Gobregts (Stellenbosch : Stellenbosch University, 2000-03)
      ENGLISH ABSTRACT: The utilisation ofDraglines to remove overburden in surface mining operations is often the process that determines the output of these operations. The bucket and its rigging have been identified as ...

    • Modelling of internal combustion engine intake and exhaust processes 

      Van Vuuren, Christiaan Michael (Stellenbosch : Stellenbosch University, 2001-04)
      ENGLISH ABSTRACT: This thesis is concerned with unsteady, one-dimensional flow, which closely mimics those found in the manifolds of internal combustion engines. The physical equations describing problems of this nature ...

    • Modelling of MEMS vibratory gyroscopes utilizing phase detection 

      Dreyer, Antonie Christoffel (Stellenbosch : University of Stellenbosch, 2008-03)
      This thesis aims to contribute to the modelling and analysis of MEMS gyroscope technologies. Various gyroscope types are studied, and the phase-based vibratory gyroscope is then selected for further investigation. In ...