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Now showing items 31-40 of 41
Optimisation of mine secondary fan systems
(North-West University (South Africa)., 2020)
The rising cost of electricity in South Africa has driven deep-level gold mines to save on costs. The optimisation of mine ventilation systems has shown significant potential for energy savings. A literature study showed ...
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 ...
Identifying demand market participation opportunities available in cement plants
(2014)
South African cement manufacturers are under financial pressure. Sales have declined due to the 2008 recession and electricity costs have tripled from 2005 to 2012. Electricity cost savings are therefore more important ...
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 ...
A performance-centered maintenance strategy for industrial DSM projects
(2015)
South Africa’s electricity supply is under pressure because of inadequate capacity expansion in the early 2000s. One of the initiatives funded by Eskom to alleviate the pressure on the national electricity grid was an ...
Improving DSM project implementation and sustainability through ISO standards
(2014)
South African industries are challenged with above inflation electricity tariffs which may affect their competitiveness within their relative markets. In order to successfully manage these rising electricity costs and ...
Sustainable DSM on deep mine refrigeration systems : a novel approach
(North-West University, 2007)
The supply and demand of energy have become a world wide concern. It is predicted that world energy usage could increase from 15TW, to 21TW by 2020. In South Africa the peak demand for electrical energy has already outrun ...
A general approach to develop and assess models estimating coal energy content
(North-West University (South Africa), 2019)
The gross calorific value (GCV) is an important property defining the energy content of fuels such as coal. Many industries require the GCVs to accurately quantify and report the energy efficiency of the operations. ...
Trade-off between simulation accuracy and complexity for mine compressed air systems
(North-West University (South Africa), 2019)
In South Africa, the industrial sector is responsible for a large portion of the country's total annual electricity consumption. The mining sector alone contributes approximately 15%, which makes it one of the largest ...
Optimising mine cooling system performance through monitoring and analysis
(North-West University (South Africa), 2019)
The South African mining industry is under ever-increasing economic pressure. The lack of shallow resources forces mining companies to increase workplace depths to exploit mineral resources. The increased depth of workplaces ...