Browsing Faculty of Engineering by Title
Now showing items 92-111 of 1129
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The carbon dioxide gasification characteristics of biomass char samples and their effect on coal gasification reactivity during co-gasification
(Elsevier, 2018)The carbon dioxide gasification characteristics of three biomass char samples and bituminous coal char were investigated in a thermogravimetric analyser in the temperature range of 850–950 °C. Char SB exhibited higher ... -
The carbon dioxide, methane and nitrogen high-pressure sorption properties of South African bituminous coals
(Elsevier, 2019)In this paper, we report the CO2, CH4 and N2 sorption isotherms of four dry South African bituminous coals at pressures up to 16 MPa at 55 °C. The sorption capacities of the samples with respect to the adsorbate gases ... -
Carbon nanotubes in the 21st century: an advancement in real time monitoring and control of environmental water
(Wiley, 2019)Abstract: This chapter contains sections titled: Introduction -- Challenges and Prospects for Further Application -- Conflict of Interest -- Acknowledgments -- Contributions -
Carbon particle type characterization of the carbon behaviour impacting on a commercial-scale Sasol-Lurgi FBDB gasifier
(Elsevier, 2009)Char-form analysis, whilst not yet an ISO standard, is a relatively common characterization method applied to pulverized coal samples used by power utilities globally. Fixed-bed gasification coal feeds differ from pulverized ... -
Cascade disruption of generation: a special focus on African grid volnurebilities
(IEEE, 2011)Large scale network disruption often lies at the heart of regional blackouts, and often disrupts entire communities in terms of their normal activities and well being. Disruptions caused by cascading failure of generating ... -
Cascade disruption of generation: the hidden gift of failure
(IEEE, 2012)Large scale network disruption often lies at the heart of regional blackouts, and often disrupts entire communities in terms of their normal activities and well being. Recognizing the threat posed by such disturbances, ... -
The case for nuclear electricity in South Africa – a political alignment framework
(Wiley, 2014)Energy is essential for economic development of South Africa. All areas for development and economic growth i.e. reducing poverty and improving quality of life require affordable access to reliable energy services. When ... -
Case study for evaluating benefits of pavement research: final results
(The National Academies of Sciences, Engineering, and Medicine, 2013)Heavy-duty pavement innovations developed through research for a major rehabilitation project in California were evaluated. The performance benefits of the innovations were examined, and the economic benefits from ... -
Case study: energy savings for a deep-mine water reticulation system
(Elsevier, 2012)In deep level mining, water reticulation systems are one of the major consumers of electricity. The refrigeration plants, together with the underground water supply and dewatering systems are integrated to form one complete ... -
Case study: the effects of a variable flow energy saving strategy on a deep-mine cooling system
(Elsevier, 2013)Cooling systems consume up to 25% of the total electricity used on deep level mines. These systems are integrated with the water reticulation system to provide chilled service water to the mine as well as cooling for mine ... -
Catalytic dehydrogenation of the liquid organic hydrogen carrier octahydroindole on Pt (111) surface: ab initio insights from density functional theory calculations
(Elsevier, 2019)Ab initio calculations based on dispersion-corrected density functional theory were used to gain insight into the adsorption properties of reactants and products involved in the catalytic dehydrogenation of octahydroindole ... -
Catalytic dehydrogenation onset of liquid organic hydrogen carrier, perhydro-dibenzyltoluene: the effect of Pd and Pt subsurface configurations
(Elsevier, 2019)Perhydro-dibenzyltoluene (H18-DBT) is the hydrogen-rich form of the liquid organic hydrogen carrier (LOHC), dibenzyltoluene. The reversible catalytic hydrogenation and dehydrogenation of LOHCs has made them highly favored ... -
The catalytic effect of Benfield waste salt on CO2 gasification of a typical South African Highveld coal
(Springer, 2019)The possible catalytic effect of a 5% loading by mass of crystallized salt from spent Benfield solution (SBFS) was investigated and compared with the catalytic influence of a 5 mass% loading of K2CO3 on the char–CO2 ... -
Catalytic hydroprocessing of ground cottonseeds in a cottonseed oil and 1-octane solvent to produce renewable diesel. (Slide presentation)
(ETA-Florence Renewable Energies, 2017) -
Category-based phoneme-to-grapheme transliteration
(International Speech Communication Association ( ISCA ), 2013)Grapheme-based speech recognition systems are faster to develop but typically do not reach the same level of performance as phoneme-based systems. In this paper we introduce a technique for improving the performance of ... -
Cathodic protection system design framework
(IEEE, 2019)The aim of this article is to establish a cathodic protection (CP) system design framework for the petrochemical industry in South Africa. The CP system design framework is destined to be used as a guideline when designing ... -
CFD analysis of thermal dispersion in a structured packed bed
(SACAM, 2018)Packed beds are generally modelled in a partial manner to avoid computational costs. This implies that only a small portion of the representative bed is modelled explicitly in CFD simulations, usually by assuming ... -
CFD and systems thermal-hydraulic analysis in the design and safety assessment of high-temperature reactors
(Woodhead Publishing, 2019)An overview is provided of the role of the various levels of CFD in the different stages of the design, analysis and evaluation of very-high-temperature reactor (VHTR) systems and molten salt reactor (MSR) systems. The ... -
CFD applications in the Pebble Bed Modular Reactor Project: a decade of progress
(Elsevier, 2011)Of all the systems and components that have to be designed for a nuclear plant, the Reactor Unit is the most significant since it is at the very heart of the plant. At Pebble Bed Modular Reactor (Pty) Ltd. (PBMR), the ...
