Browsing by Title
Now showing items 17507-17526 of 35418
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An improved baseline model for a mine surface cooling plant DSM project
(North-West University (South Africa) , Potchefstroom Campus, 2017)Several challenges exist for the successful implementation of energy cost reduction projects on industrial systems. Due to the potential large financial impact of these projects, the process of determining and reporting ... -
Improved control of clear water underground pumping system for demand side management at an interconnected South African goldmine
(North-West University (South Africa) , Potchefstroom Campus, 2016)Deep level clear water pumping at gold mines accounts for nearly 30 % of a mine’s total electricity consumption. Demand side management (DSM) initiatives for various deep level water pumping systems have been implemented ... -
Improved control of compressed air networks using machine learning
(North-West University (South Africa)., 2021)Mining companies in South Africa are under financial strain and so need to minimise expenses to stay profitable. Improving the efficiency of compressed air networks could lead to a significant reduction in electricity ... -
Improved control processes to sustain electricity cost savings on a mine water reticulation system
(North-West University, 2019)Eskom provides the majority of South Africa's electricity. However, Eskom's maximum generating capacity might not be sufficient to meet South Africa's demand in the future. Therefore, Eskom initialised the Demand Side ... -
Improved energy budgeting process for mines using measurement and verification principles
(North-West University (South Africa), 2021)Budgets are a common tool used to determine the future income and expenditure of a mine. The operating budgets (largely focussed on the energy consumption of the mine) are also used to measure the mine’s performance. It ... -
An improved error correction algorithm for multicasting over LTE networks
(2014)Multicasting in Long-Term Evolution (LTE) environments poses several challenges if it is to be reliably implemented. Neither retransmission schemes nor Forward Error Correction (FEC), the traditional error correction ... -
Improved event based method for harmonic impedance assessment
(IEEE, 2016)The quantification of harmonic emission requires an accurate model of the network harmonic impedances. A number of techniques have been proposed for the assessment of the network harmonic impedances to be practical and ... -
An improved formulation of the underground mine scheduling optimisation problem when considering selective mining
(ORSSA, 2015)The use of mixed integer programming is a modelling approach well suited to formulate the mine scheduling optimisation problem for both open pit and underground mining. The resolution applied for discretising the problem, ... -
Improved gold recovery by accelerated gravity separation
(North-West University, 2011)This project was specifically aimed at using increased acceleration separation, as a method to optimize the recovery of gold in an ore body mainly consisting of hematite. The specific gravity of gold is much higher in ... -
Improved gold recovery by accelerated gravity separation
(Gecamin Publishers, 2014)This project was specifically aimed at using increased acceleration separation, as a method to optimize the recovery of gold in an ore body mainly consisting of hematite where the specific gravity of gold is much higher ... -
Improved implementation strategies to sustain energy saving measures on mine cooling systems
(2015)Reliable, efficient and cost-effective energy supply is crucial for economic and social development. Mining and industrial sectors consumed close to 37% of the total energy produced in the world during 2013. The South ... -
Improved investment performance using the portfolio diversification index
(Sabinet, 2012)The residual variance method is the traditional method for measuring portfolio diversification relative to a market index. Problems arise, however, when the market index itself is not appropriately diversified. A diversification ... -
An improved maintenance management strategy for gas field equipment in Escravos gas–to–liquid plant, Nigeria
(North-West University, 2010)The safety record of most petrochemical industries in the world and Nigeria in particle, has not been able to come down to the maximum allowable range of 0 - 0.1 percent of tolerance on recordable injuries, due to increasing ... -
Improved management approach to oil spill response of the gas-to-liquid project fuels
(North-West University, 2007)The demand for energy globally has remained unabated; technology and enterprise alignment is meeting this challenge. The current production of transport fuel is increasing with diesel fuel mostly in demand. This trend has ... -
Improved metathesis lifetime: chelating pyridinyl-alcoholato ligands in the second generation Grubbs precatalyst
(MDPI, 2014)Hemilabile ligands can release a free coordination site “on demand” of an incoming nucleophilic substrate while occupying it otherwise. This is believed to increase the thermal stability and activity of catalytic systems ... -
Improved mine cooling system performance through the control of auxiliary systems
(North-West University, 2012)Industrial and mining sectors are amongst the largest single energy consumers in South Africa, making them a primary focus for implementing energy saving initiatives. Refrigeration systems on mines are responsible for ... -
An improved model for self-sensing heteropolar active magnetic bearings
(North-West University, 2007)Active magnetic bearings (AMBs) use position feedback to actively control the forces generated by electromagnetic transducers, in order to realise stable suspension of a levitated object. The AMB concept is not new and ... -
Improved PCR diagnostics using up-to-date in silico validation: an F-gene RT-qPCR assay for the detection of all four lineages of peste des petits ruminants virus
(Elsevier, 2019)Peste des petits ruminants (PPR) is a globally significant disease of small ruminants caused by the peste des petits ruminants virus (PPRV) that is considered for eradication by 2030 by the United Nations Food and Agriculture ... -
Improved reactivity of large coal particles by K2CO3 addition during steam gasification
(Elsevier, 2013)In this study, the excess solution impregnation method was used to impregnate large coal particles (5 and 10 mm) with K2CO3, and the effect of the additive on steam gasification reactivity was investigated. A washed bituminous, ... -
Improved risk management processes for South African industrial ESCos
(North-West University (South Africa) , Potchefstroom Campus, 2016)In the past, South African energy service companies (ESCos) primarily implemented demand side management (DSM) projects, which were supported by Eskom Integrated Demand Management (IDM) funding models. With the introduction ...
