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Now showing items 11-20 of 20
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 ...
The development of a system to optimise production costs around complex electricity tariffs
(North-West University, 2012)
Rising South African electricity prices and reduced sales following the 2008 economic recession have led cement manufacturers to seek ways to reduce production costs. Prior research has shown that reduced electricity costs ...
Predicting electricity consumption and cost for South African mines
(North-West University, 2013)
Electricity costs in South Africa have risen steeply; there are a number of factors that have contributed to this increase. The increased costs have a considerable infuence on the mines and mining sector in general. It ...
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 ...
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 ...
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 ...
Novel simulations for energy management of mine cooling systems
(North-West University (South Africa) , Potchefstroom Campus, 2017)
The South African mining industry purchased 13.8% of the electricity supplied by Eskom in 2015. Deep-level mines are some of the largest electricity consumers in the mineral extraction industry. The electricity costs of ...
Cost and energy savings on mine surface cooling systems
(North-West University (South Africa) , Potchefstroom Campus, 2017)
The South African national power utility, Eskom, is struggling to meet the high electrical energy demand. The problem is due to the shortage of generating capacities as a result of delays in the building of new power ...
A dynamic optimal control system for complex compressed air networks
(North-West University (South Africa) , Potchefstroom Campus, 2016)
Mines use large compressed air networks to supply shafts and processing plants with compressed air. These networks can be complex where multiple compressors are located at different locations. To add to the complexity of ...
A target-based performance tracker for mine energy monitoring
(North-West University (South Africa), 2021)
Software systems play a major role in the day-to-day operation of deep-level mines. These systems range from quantifying production and energy use to monitoring seismic activity. As deep-level mines expand to reach more ...