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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

Out of the ordinary lunch with Prof Jansen
2015-08-17

Prof Jansen and the twins pose for pictures after enjoying a laugh and chat at the lunch event.

Numerous sets of twins and a set of triplets were entertained by, and enjoyed lunch with, the Vice-Chancellor and Rector of the university, Prof Jonathan Jansen.  Wednesday 12 August 2015 marked an extraordinary day in the Kovsie history book.

The Reitz Hall in the Centenary complex was filled with echoes of laughter as Prof Jansen told “twin jokes” he had Googled earlier for the occasion. Save for the humour, he said that twins and triplets represent a unique bond.  “After all, we should be striving for a way of being together,” he said, speaking about the quest for national solidarity.

Sitting in groups of six, and after the introductions, the duos and trio were soon engaged in conversation.

Anita and Mikita Miza, who were sharing a table with Marike and Ilna Marais, told stories from their childhood.

“We did not realise that we were twins until we were in grade one,” said Anita, who is studying the same course as her sister. Mikita is in the second year of her BSoc Science degree, while her twin is a year ahead. She had to remain in Mtata, their hometown, for a year while Anita began her first year. “It was the longest year of my life,” said Mikita.

Marike and Ilna are first years in Physiotherapy and Optometry, respectively. When asked by Prof Jansen what they never share, the non-identical twins were quick to reply: “clothes,” although they still share a room. When they were in high school, fellow learners struggled to believe that Marike and Ilna are twins, because of their distinctly different looks.

The lunch united strangers, who have a unique common bond, and acted as a platform to tell interesting stories that are seldom heard.

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