Browsing Masters Degrees (Mechanical and Mechatronic Engineering) by Title

Now showing items 197-216 of 276

  • Parallel paradigms in optimal structural design 

    Van Huyssteen, Salomon Stephanus (Stellenbosch : Stellenbosch University, 2011-12)
    ENGLISH ABSTRACT: Modern-day processors are not getting any faster. Due to the power consumption limit of frequency scaling, parallel processing is increasingly being used to decrease computation time. In this thesis, ...

  • Particle deflection and plate-out dynamics in a helium stream 

    Steyn, Hermanus Johannes (Stellenbosch : University of Stellenbosch, 2009-12)
    ENGLISH ABSTRACT: In the primary circuit components of high temperature reactors, various unwanted particles have been found. These particles include, for example, graphite and silver- 110 (110mAg). The silver-110 (110mAg) ...

  • A passive night-sky radiation system 

    Joubert, Gideon Daniel (Stellenbosch : Stellenbosch University, 2014-12)
    ENGLISH ABSTRACT: A passive night-sky radiation cooling system consists of a radiation panel and a cold water storage tank. The stored cold water may be used to cool a room during the day time, particularly in summer. ...

  • A passive suspension system for a hydrofoil supported catamaran 

    Kopke, Markus (Stellenbosch : University of Stellenbosch, 2008-03)
    This study investigates practical passive methods to improve the seakeeping of a Hydrofoil Supported Catamaran (Hysucat). The Hysucat is a hybrid vessel combining hydrofoil efficiency with the stability of catamarans. The ...

  • Performance and thermo-mechanical cost evaluation of API 661 air-cooled heat exchangers 

    Ackers, Mogamat Sadley (Stellenbosch : Stellenbosch University, 2012-12)
    ENGLISH ABSTRACT: The optimal design of a heat exchanger for a specified heat transfer, pressure drop and set of ambient conditions entails minimising space, weight, material usage and overall cost. However, the variables ...

  • Performance characteristics of an air-cooled steam condenser incorporating a hybrid (dry/wet) dephlegmator 

    Heyns, Johan Adam (Stellenbosch : Stellenbosch University, 2008-12)
    This study evaluates the performance characteristics of a power plant incorporating a steam turbine and a direct air-cooled dry/wet condenser operating at different ambient temperatures. The proposed cooling system uses ...

  • Performance characteristics of packed bed thermal energy storage for solar thermal power plants 

    Allen, Kenneth Guy (Stellenbosch : University of Stellenbosch, 2010-03)
    ENGLISH ABSTRACT: Solar energy is by far the greatest energy resource available to generate power. One of the difficulties of using solar energy is that it is not available 24 hours per day - some form of storage is ...

  • Performance evaluation of a micro gas turbine centrifugal compressor diffuser 

    Krige, David Schabort (Stellenbosch : Stellenbosch University, 2013-03)
    ENGLISH ABSTRACT: Micro gas turbines used in the aerospace industry require high performance with a compact frontal area. These micro gas turbines are often considered unattractive and at times impractical due to their ...

  • Performance evaluation of a solar chimney power plant 

    Hedderwick, Richard Anthony (Stellenbosch : University of Stellenbosch, 2000-12)
    A solar chimney power plant consists of a central chimney that is surrounded by a transparent canopy located a few meters above ground level. The ground beneath this canopy or collector as it is known is heated by the ...

  • Performance evaluation of air-cooled heat exchangers 

    Makhema, Thabo (Stellenbosch : Stellenbosch University, 2000-12)
    ENGLISH ABSTRACT: The main objective of this study to determine the air-side heat transfer and pressure drop performance characteristics of commercially available round and elliptical fined tubes. A . computer code to ...

  • Performance evaluation of water collecting systems with a hybrid dephlegmator 

    Du Plessis, Jacques J. P. (Stellenbosch : Stellenbosch University, 2014-12)
    ENGLISH ABSTRACT: Water collection systems are used in wet-cooling towers (WCTs) with fill over which water to be cooled flows and in evaporative air-cooled heat exchangers (EACHEs) having deluged tube bundles over which ...

  • Performance evaluation of wet-cooling tower fills with computational fluid dynamics 

    Gudmundsson, Yngvi (Stellenbosch : Stellenbosch University, 2012-03)
    ENGLISH ABSTRACT: A wet-cooling tower fill performance evaluation model developed by Reuter is derived in Cartesian coordinates for a rectangular cooling tower and compared to cross- and counterflow Merkel, e-NTU and Poppe ...

  • Performance improvement of the Rover 1S/60 Gas Turbine Compressor 

    Luiten, Ruben Vincent (Stellenbosch : Stellenbosch University, 2015-03)
    ENGLISH ABSTRACT: The use of gas turbines in central receiver solar power plant cycles has become an increasingly popular research topic. This has led to the need to investigate and analyse the effect of the solar receiver ...

  • Performance investigation of a turbocharger compressor 

    De Wet, Andrew Louis (Stellenbosch : Stellenbosch University, 2011-12)
    ENGLISH ABSTRACT: Stellenbosch University participated in a project to re-design the compressor section of a diesel locomotive turbocharger. Tests conducted on the prototype compressor showed possible rotating stall in ...

  • Performance of a parabolic trough solar collector 

    Brooks, Michael John (Stellenbosch : University of Stellenbosch, 2005-03)
    Parabolic trough solar collectors (PTSCs) constitute a proven source of thermal energy for industrial process heat and power generation, although their implementation has been strongly influenced by economics. In recent ...

  • Performance of a solar air heater incorporating thermal storage 

    Lombaard, Francois (Stellenbosch : Stellenbosch University, 2002-12)
    ENGLISH ABSTRACT: In the present study, research was conducted to determine the feasibility of water energy storage through which the output of heated air by an upward facing solar air heater could be prolonged. Following ...

  • Performance of an axial flow helium compressor under high through-flow conditions 

    De Wet, Christiaan Louis (Stellenbosch : University of Stellenbosch, 2010-03)
    ENGLISH ABSTRACT: The purpose of this investigation is to determine the performance of an axial ow compressor operating in a closed loop helium cycle under high through- ow conditions. The GTHTR300 four-stage helium ...

  • Performance trends of a large air-cooled steam condenser during windy conditions 

    Louw, Francois G. (Stellenbosch : University of Stellenbosch, 2011-03)
    Please refer to full text to view abstract.

  • Performance trends of an air-cooled steam condenser under windy conditions 

    Van Rooyen, J. A. (Stellenbosch : University of Stellenbosch, 2007-03)
    Air-cooled steam condensers (ACSC’s) are increasingly employed to reject heat in modern power plants. Unfortunately these cooling systems become less effective under windy conditions and when ambient temperatures are high. ...

  • Plastic photovoltaic roof tiles 

    Donkin, Richard Philip (Stellenbosch : University of Stellenbosch, 2009-12)
    ENGLISH ABSTRACT: This project investigated the feasibility of incorporating photovoltaic cells into plastic roof tiles using injection moulding. Such tiles have the potential to provide robust and distributed electricity ...