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Now showing items 21-30 of 33
Mine ventilation characterisation through simulations
(North-West University, 2018)
The profitability of the mining industry is contingent on the industry’s ability to improve upon the status quo of operational efficiency. If the archaic operating methods of mines are altered to embrace and incorporate ...
Induction motor efficiency test methods: a comparison of standards
(North-West University, 2018)
In this work, fundamental aspects regarding the efficiency of induction motors are treated. Improved efficiency is the task of the hour. Environmental challenges, which include climate change, global warming and greenhouse ...
An integrated approach to optimise energy consumption of mine compressed air systems
(North-West University, 2012)
The demand for electricity in South Africa has grown faster than the increase in generation capacity. However, it is expensive and time consuming to commission new power stations. Another approach is to reduce electricity ...
Energy efficiency opportunities in mine compressed air systems
(North-West University, 2009)
Demand Side Management (DSM) is one of the most viable and sustainable short term methods to address the shortfall in electricity generation in South Africa. This is because DSM projects can be implemented relatively ...
Reducing electrical costs for a mine ventilation system with the aid of simulation software
(North-West University (South Africa) , Potchefstroom Campus, 2017)
Eskom, the South African state owned power utility, offers a demand side management (DSM) program that suggests different electrical energy tariffs during different times of the day for large consumers of electrical energy, ...
Developing a dynamic operational energy management strategy for energy intensive industries
(North-West University (South Africa) , Potchefstroom Campus, 2017)
Fossil fuels are likely to supply most human energy needs for the 21st century. However, these fuels are exhaustible and have adverse environmental effects when combusted. To reduce the negative environmental effects, the ...
Energy management for improved profitability of small manufacturing enterprises
(North-West University (South Africa) , Potchefstroom Campus, 2015)
Approximately 75% of small, medium and micro enterprises (SMMEs) created in South Africa (SA) fail in the first year. This is a serious socio-economic problem as SMMEs in South Africa employ over 60% of the workforce and ...
An integrated energy efficiency strategy for deep mine ventilation and refrigeration
(2014)
South Africa’s electricity supply is under pressure. Mining is one of South Africa’s
largest electricity consumers with electricity-intensive services such as compressed air, cooling, ventilation, etc. More than 40% of ...
The effect of controlling main ventilation fan inlet guide vanes for a deep level platinum mine to reduce electrical costs
(North-West University (South Africa) , Potchefstroom Campus, 2017)
Because of the annual electricity increases from Eskom that are above inflation, and the mining industry that
is struggling to survive due to continuous increase in operating cost, the low selling price of precious ...
Improving existing DSM initiatives on mine refrigeration systems for sustainable performance
(North-West University (South Africa) , Potchefstroom Campus, 2017)
South Africa, as a young developing country, is dependent on a sufficient electricity supply for ongoing economic development. With an increasing gross domestic product and an alarming growth rate attributed to the abundant ...