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21 May 2018 Photo Naledi Posholi
Could wave power be an answer to SAs electricity crisis
Attending a recent guest lecture, were from the left: Prof Marian Tredoux UFS Department of Geology, Prof Stoffel Fourie fromWalter Sisulu University, and Thoriso Lekoetje a third-year UFS Geology student.

South Africa has a 2800-km long coastline with high wave energy potential that can generate electricity. Presenting a lecture at the UFS Department of Geology, Prof Stoffel Fourie discussed wave power as a possible solution to the country’s electricity needs. Prof Fourie is a geophysicist and the chairperson of research and development in the faculty of engineering at Walter Sisulu University.

Power at any time
Wave power is a renewable and sustainable resource. “It can provide continuous base load power because wave energy systems do not suffer from ‘time of day’ issues as other renewable energy options. This means that it can generate power at any time of the day,” said Prof Fourie. 
Discussed also was the wave power advantages and disadvantages. 

Wave energy advantages
• Wave energy is a reliable renewable energy resource;

• Reduces dependency on fossil fuels;

• Wave energy is predictable and consistent;

• Generates little or no pollution to the environment compared to other energy resources; and

• Presents no barriers or difficulty to migrating fish and aquatic animals.

Wave energy disadvantages
• Wave energy conversion devices are location dependent, thus limiting possible sites where they can be implemented;

• Offshore wave energy devices can be a threat to shipping as they are too small to detect by radar; and

• High capital investment required for start-up costs, construction and maintenance.

“Looking at both advantages and disadvantages, there is no doubt that South Africa can use this method to harvest energy. With the right investment and political buy-in, wave power could provide a continuous supply of energy and contribute to all South Africa’s electricity needs,” Prof Fourie said.

News Archive

Shimlas secure 23-21 Varsity Cup win
2015-03-10

It might have been late but it was enough. A penalty before fulltime saw the Shimla secure a 23-21 win over Nelson Mandela Metropolitan University (NMMU) in Port Elizabeth on Monday night.

 

After beating NMMU on 9 March 2015, Shimlas still remain the only unbeaten side in this years Varsity Cup rugby tournament. However, Shimlas were replaced at the top of the log by the University of Pretoria after the latest round of fixtures.

 

Shimlas flank Refuoe Rampeta crossed for the first try shortly after kick-off, and flyhalf Niel Marais conversion put the UFS in an 8-0 lead early on. Soon after, Shimlas lock, Niel Claassen got over for their second try. Scrumhalf Renier Botha ploughed his way over the line to give Shimlas a heavy 21-0 advantage at the first strategy break.

 

Yet NMMU managed to fight back well for the remainder of the match, bringing the scores level at 21-21. Unfortunately, the home team could not keep this going, and a penalty kick sneaked in before the whistle blew secured the win for Shimlas.

 

UFS-Shimlas point scorers:

Tries: 
Rampeta, Claassen, Botha
Conversions: Marais 2
Penalties: Marais

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