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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

Three minutes for research
2015-09-07

When you have only three minutes in which to explain an 80 000-word thesis, every second counts. This is what researchers from across the country realised during the first national round of South Africa’s Three-minute thesis competition.

The University of the Free State (UFS) Postgraduate School hosted this international competition on the Bloemfontein Campus, where master’s and doctoral students from 12 universities participated. During the competition, each researcher had to give a presentation on his/her research within three minutes.

Dr Henriette van den Berg, Director of the UFS’s Postgraduate School, and presenter of the two-day competition, said the competition is the ideal platform to teach researchers how to become effective research communicators.

“It is important that researchers should learn to communicate the essence of their research to audiences that aren’t necessarily specialists in the field. They should also be able to emphasise how their research contributes to the success and well-being of communities. Researchers often have to explain to persons who aren’t specialists in their specific research area the reasons why it is important to fund the research, for example, or during a work interview. They should be able to convey the essence of their research effectively in a very short time.”

The 3MT competition, which originated at the University of Queensland in Australia, has in 2010 developed into an international trend since its inception. Currently, the 3MT is presented in Australia, the USA, and the UK.

For the competition, participants are given just three minutes to explain their research. In this time, they have to explain the problem and the methodology, as well as why this research is important. Participants are allowed to make use of only one piece of static imaging material for support.

A panel of judges from the participating universities were selected to assess each presentation, based on how well participants expressed themselves in such a short time, and on their choice of imagery.

Gavin Robinson from the University of Johannesburg, Cameron McIntosh, and Ingrid Alleman, both from the UFS, were the respective winners in the categories for doctoral and master’s students.

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