Browsing Faculty of Engineering by Title
Now showing items 370-389 of 1122
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Evaluation and prediction of slow pyrolysis products derived from coals of different rank
(Elsevier, 2017)When coal is heated slowly (<10 °C/min), as in the Lurgi Fixed Bed Dry Bottom (FBDB) gasification process, products formed in the pyrolysis region of the gasifier include gas liquor, condensable tar, oil and non-condensable ... -
Evaluation of a detailed radiation heat tranfer model in a high temperature reactor systems simulation model
(Elsevier, 2008)Radiation heat transfer is a major mode of heat transfer in high temperature gas-cooled reactors (HTRs) because of the high operating temperatures. It is, however, a difficult phenomenon to calculate in full detail due to ... -
Evaluation of a domestic-use low-smoke fuel produced via the pyrolysis of lump coals
(International Pittsburgh Coal Conference, 2016) -
Evaluation of a facial recognition engines for a surveillance system
(IEEE, 2019)This paper presents the evaluation of a facial recognition system when considered in an operational context for the South African environment. Often, performance measures, such as recognition rate, are considered outside ... -
Evaluation of bio-char based products as hydrotreating catalysts for the production of renewable fuel
(2017)Increasing demand for alternative fuel from fossil fuel exists which has led to the development of new technologies for the production of bio-fuels. One such technology involves the hydrotreatment of vegetable oils such ... -
Evaluation of catalyst activity for release of hydrogen from liquid organic hydrogen carriers
(Elsevier, 2019)This contribution investigate the effect of parameters for production of hydrogen by catalytic dehydrogenation of perhydrodibenzyltoluene (H18-DBT). The sensitivity of the dehydrogenation reaction to temperature (290–320 ... -
An evaluation of configuration parameters affecting network coding on the data link layer in a wireless network
(IEEE, 2011)Network Coding, introduced in [2], promises significant theoretical capacity gains in multicast networks. Practical implementations in underlay networks are however quite complex in practice and performance is subject to ... -
Evaluation of cottonseed oil as co-feedstock for the hydroprocessing of petroleum middle distillates for diesel fuel production
(ETA, 2016)Mandatory blending of biodiesel into petroleum diesel came to effect in 2015 in South Africa. The availability of biodiesel to implement this mandate however poses a challenge for local biodiesel producers and petroleum ... -
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 ...