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The South African industrial sector is under significant financial pressure and need to reduce production costs to remain competitive in the global and local market. Some steel plants use reheating furnaces to reheat materials before hot rolling. These furnaces use industrial fuel gases as an energy source. Process by-product and purchased gases can be used as fuel. Inefficiencies in gas distribution...
Numerous initiatives exist for the efficient energy management of mine compressed air systems. Most of these initiatives are also part of large projects that provide a definite impact within short timeframes. However, some of these implemented initiatives lack sustainability. A need therefore arises to identify and implement initiatives that continually improve the efficiency of a mine's compressed...
A load management strategy was developed and implemented on closed and semi-closed loop mine surface cooling systems. Load reduction tests were conducted during the Eskom evening peak period to verify the strategy. The underground temperatures and relative humidity (RH) were monitored during this period. An Energy Management System (EnMS) was utilised to implement the developed strategy. The underground...
In 2016, South Africa's, steel production was down by 4.5% year-on-year. This was due to both a struggling economy and a world surplus in steel supply. Therefore, in order for South Africa to remain competitive in the global steel market, the current emphasis on cost reduction needs to be maintained. It is thus important for personnel at iron- and steel-manufacturing plants to be aware of the risks...
As a result of insufficient generation capacity, Eskom has been struggling to meet the growing electricity demand. Due to the immediate nature of this problem, several short- to medium-term solutions have been implemented. These solutions include the utilisation of gas turbine power stations, load shedding and the Demand-Side Management (DSM) programme. This study focusses on evaluating the feasibility...
The efficient usage of electricity in the South African water industry has not been a priority due to the relatively low cost of electricity in the past. The situation has changed over the past years as a result of the rapid increase in electricity costs.
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