• A large design space multi-disciplinary optimization of a mixed flow micro gas turbine compressor stage 

      Ochabski, Thomas M. (Stellenbosch : Stellenbosch University, 2019-12)
      ENGLISH ABSTRACT: This thesis presents a novel method of parametrization and optimization for a large design space exploration of a micro gas turbine compressor stage. 48 free parameters were used to control the meridional ...
    • 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 ...
    • Mapping the relationship between the subjective response of jurors to fan blade parameters 

      Chung, Sung bok (Stellenbosch : Stellenbosch University., 2020-03)
      ENGLISH ABSTRACT: The noise generated by computer cooling fans is known to be a factor which may cause discomfort in the workplace. Aerodynamic noise caused by fan blades has been identified to be a significant factor ...
    • Matching renewable energy to the South African electricity system 

      Kanhukamwe, Faith Nyaradzo (Stellenbosch : Stellenbosch University, 2019-04)
      ENGLISH ABSTRACT: In 1998, the signing of the white paper on Energy Policy pushed South Africa to invest in the development of renewable energy. Following the introduction of the Renewable Energy Independent Power Producer ...
    • Material and energy flow analysis of the Malawian tea industry 

      Taulo, J. L.; Sebitosi, A. B. (Elsevier, 2016)
      ENGLISH ABSTRACT: This paper briefly reviews the material and energy flows of the Malawian tea industry, in order to identify opportunities and reduce its environmental impacts. The review also details the concept and ...
    • Material and structural modelling of corrugated paperboard packaging for horticultural produce 

      Starke, Megan Marya (Stellenbosch : Stellenbosch University, 2020-04)
      ENGLISH ABSTRACT: Corrugated paperboard is the primary packaging material for fresh horticultural produce and plays an integral part in protecting the produce from mechanical damage throughout the cold chain journey. ...
    • 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 ...
    • Measurement of in vivo patella and achilles tendon forces during treadmill running 

      Groeneveld, Llewellyn Wallace (Stellenbosch : Stellenbosch University., 2020-03)
      ENGLISH ABSTRACT: Tendons are the connections that translate forces from muscles to bone and are essential to the musculoskeletal system movement during locomotion. The load experienced during running is believed to be a ...
    • 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 fracture properties using digital image and volume correlation: decomposing the J-integral for mixed-mode parameters 

      Molteno, Matthew Robert (Stellenbosch : Stellenbosch University, 2017-12)
      ENGLISH ABSTRACT: The degradation of material properties over time is one of the core constituents of structural integrity monitoring. For this purpose, the materials’ resistance to brittle fracture is the most widely used ...
    • 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 behaviour of additive manufactured lattice structures 

      Tshikwand, Georgino Kaleng (Stellenbosch : Stellenbosch University, 2020-04)
      ENGLISH ABSTRACT: Lattice structures are open-cell, strut-based structures made up of unit cells that are tessellated in 3 orthogonal directions. Depending on the physical design of the unit cell, the lattice structure can ...
    • 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 ...