Browsing Faculty of Engineering by Title
Now showing items 379-398 of 1123
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Evaluation of covalently and ionically cross-linked PBI-excess blends for application in SO2 electrolysis
(Elsevier, 2015)Proton exchange membranes (PEM) containing various combinations of PPOBr (pol(2,6-dimethylbromide-1,4-phenylene oxide, covalently cross-linked) or PWN (poly(tetrafluorostyrene-4-phosphonic acid), ionically cross-linked) ... -
Evaluation of demodulation algorithms for robust self-sensing active magnetic bearings
(Elsevier, 2013)Active magnetic bearings (AMBs) play a key role in various industrial applications. In the ongoing challenge to reduce the number of external sensing devices and manufacturing costs of AMBs, self-sensing techniques have ... -
Evaluation of design and planning parameter impact by energy efficient measures through appliance-based modelling
(IEEE, 2017)In a rapidly evolving industry as a result of consumer self-generation and a drive to become more energy efficient, it is necessary to understand whether traditional network planning methods are sufficient. Electrical ... -
Evaluation of harmonic distortion from multiple renewable sources at a distribution substation
(IEEE, 2017)Harmonic emission assessment in a distribution network with existing background voltage harmonics is a challenge for Renewable Power Producers (RPP) aiming to achieve grid code compliance. Dynamic interaction of harmonic ... -
Evaluation of MEA manufacturing parameters using EIS for SO2 electrolysis
(Elsevier, 2014)Membrane electrode assembly (MEA) manufacturing parameters such as hot pressing pressure and pressing time were investigated for the use in a SO2 electrolyser. The SO2 electrolysis was optimised in terms of cell temperature, ... -
Evaluation of mineral matter transformations in low-temperature ashes of South African coal feedstock samples and their density separated cuts using high-temperature X-ray diffraction
(Taylor & Francis, 2020)Coal mineral matter is the leading cause of inevitable ash problems (fouling and slagging) during the combustion of coal. Low-temperature ash (LTA) samples of feed coals and the density separated fractions were subjected ... -
The evaluation of spent coffee grounds as feedstock for continuous hydrothermal liquefaction
(EARET, 2018)This study looks at converting a low-value waste in a continuous hydrothermal liquefaction reactor to a high-value biocrude and biochar product. The feedstock chosen for this study was spent coffee grounds (SCG) as spent ... -
Evaluation of system losses due to harmonics in medium voltage distribution networks
(IEEE, 2016)Power system harmonics are a known cause to failure, disoperation or premature aging of customer's equipment. It also causes additional losses in a distribution network that influence the planning and design of future ... -
Evaluation of the antibacterial activity of metal impregnated multi-walled carbon nanotubes: impact of domestic wastewater as supporting medium
(Desalination Publications, 2017)Despite the availability of potential water treatment resources, bacterial infections are still of major concern, especially in developing countries where large numbers of people do not have ... -
Evaluation of the Berman-Olander long-bowl gas centrifuge solution
(Taylor & Francis, 2015)The hydrodynamic equations for a long-bowl gas centrifuge can be simplified to obtain a one-dimensional differential equation for the variation of the non-dimensional axial velocity in the radial direction. In this study ... -
Evaluation of the wideband compressive radio receiver for spectrum sensing
(IEEE, 2011)We present an empirical evaluation of the carrier detection method used in the Wideband Compressive Radio Receiver (WCRR), which is of particular interest for spectrum sensing in Cognitive Radio (CR) and Dynamic Spectrum ... -
Evaluation of waste-to-energy grate incineration power plant drivers and barriers for a small South African city: a swot analysis approach
(SAIIE, 2016)The global share of energy from waste is approximately 0.4% of global energy consumption. The average amount of municipal solid waste generated in South Africa is equivalent to 11 GWh wasted energy. This paper focuses on ... -
Expanding industrial thinking by formalizing the industrial engineering identity for the knowledge era
(IEOM, 2017)To date, the formal identity of the Industrial Engineer remains vague. D ue to the broad knowledge base and application areas made available to Industrial Engineers, pinning down the commonality has ... -
Experimental performance evaluation of an ammonia-fuelled microchannel reformer for hydrogen generation
(Elsevier, 2014)Microchannel reactors appear attractive as integral parts of fuel processors to generate hydrogen (H2) for portable and distributed fuel cell applications. The work described in this paper evaluates, characterizes, and ... -
Experimental results of an asynchronous machine with thermoelectric cooling modules
(2012)It is estimated that globally around 40% of the electricity supplied to the industrial sector is consumed by electric motorised systems and for South Africa around 60% of the electricity supplied is consumed by asynchronous ... -
Experimental study of the effective thermal conductivity in the near-wall region of a packed pebble bed
(Elsevier, 2018)The effective thermal conductivity is an important parameter that represents the overall heat transfer in packed beds, including packed pebble beds. Experimental test facilities have been used to determine the effective ... -
Experimental study on liquid hydrocarbon formation during pressurized underground coal gasification conditions
(2018)UCG is a gasification process used to produce synthesis gas from coal in situ (underground in the coal seam) by injecting air or oxygen, with or without steam, into coal seams and extracting the product gas via surface ... -
Experimental validation of a rotor delevitation model with quantified severity indicators
(Elsevier, 2018)This paper presents the experimental validation of BBSim: a non-linear model for simulation of rotor delevitation in an active magnetic bearing system with backup bearings (BBs). The rotor delevitation model’s purposes are ... -
Experimental, DFT and kinetic study of 1-octene metathesis with Hoveyda-Grubbs second generation precatalyst
(Elsevier, 2012)In this study we report the catalytic performance, reaction engineering kinetics and elucidation of the reaction mechanism using density functional theory (DFT) for the metathesis reaction of 1-octene in the presence of ...