Browsing Masters Degrees (Mechanical and Mechatronic Engineering) by Title

Now showing items 234-253 of 405

    • 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 extraction on air cooled condensor steam ducts 

      Van der Westhuizen, J. J. (Stellenbosch : Stellenbosch University, 2015-12)
      ENGLISH ABSTRACT: Matimba Power Station in South Africa experiences erosion of its air-cooled condenser (ACC) bundle tubes, as stated in an ACC degradation report by Eskom. This erosion is caused by water droplets (wet ...

    • 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 ...

    • Lockin thermography parameter investigation 

      Bwembya, Emmanuel Mutale (Stellenbosch : Stellenbosch University, 2017-03)
      ENGLISH SUMMARY: Infrared thermography has emerged as one of the leading nondestructive testing techniques used for composite materials testing. It is fast, safe, effective and data acquisition is done remotely. As such ...

    • 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 ...

    • Measuring and modelling the influence of weather factors on CSP reflector soiling 

      Musango, Jones (Stellenbosch : Stellenbosch University, 2016-12)
      ENGLISH ABSTRACT: South Africa is among the countries with a plan to reduce GHG emissions of up to 34% by 2020 through investment in renewable energy in order to reduce its base load coal generation. High solar resource ...

    • Measuring mechanical properties using digital image correlation: extracting tensile and fracture properties from a single sample. 

      Huchzermeyer, Richard Lynn (Stellenbosch : Stellenbosch University, 2017-12)
      ENGLISH ABSTRACT: Multiple material properties are required to perform structural integrity assessments and reliability estimates on in-service equipment. Conventional material characterization testing approaches do not ...

    • Mechanical characterisation for simplified response modelling of woven polypropylene 

      Ellis, David Rostin (Stellenbosch : Stellenbosch University, 2017-03)
      Methods of modelling woven polymer textiles within the Finite Element (FE) environment result in a compromise between level of detail captured, computational resources required and simplicity in its implementation. This ...

    • Mechanical control of a wheelchair by means of EEG signals 

      Van Wyk, Ian Nicolaas (Stellenbosch : Stellenbosch University, 2018-03)
      ENGLISH ABSTRACT: The aim of this project was to incorporate a low cost electric wheelchair by modifying an existing self-propelled one with a neuro headset. The headset must control the wheelchair by using EEG data and ...

    • Mechanical design and analysis of a magnetic gearbox 

      Agenbach, Charles Johannes (Stellenbosch : Stellenbosch University, 2018-03)
      ENGLISH ABSTRACT: Unbalanced magnetic forces (UMFs) in magnetic gears (MG) were investigated and a criterion for identifying gear ratios with a minimum UMF was derived. The proposed criterion was assessed by developing a ...

    • Mechanical design and performance evaluation of ventilated packages 

      Fadiji, Tobi Samuel (Stellenbosch : Stellenbosch University, 2015-03)
      ENGLISH ABSTRACT: Ventilated corrugated paperboard (VCP) packages are used extensively in the fruit industry to minimize damage and facilitate airflow around the produce to maintain the cold chain. In the postharvest journey ...

    • 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 ...

    • Micro gas turbine performance evaluation. 

      Oppong, F. (Stellenbosch : Stellenbosch University, 2016-12)
      ENGLISH ABSTRACT: The performance of the BMT 120 KS micro gas turbine engine is investigated in this thesis. The study includes component matching of the engine elements using compressor and turbine characteristic maps ...

    • 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 ...