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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

UFS hosts colloquium on technological higher education
2016-10-27

Description: Technology colloquium Tags: Technology colloquium

Prof Lew Zipin, Prof Sechaba Mahlomaholo,
Prof Marie Brennan and Dr Milton Nkoane,
attended the Faculty of Education’s colloquium
on the field of technological higher education
and its contribution to the knowledge society,
at the UFS Bloemfontein Campus. 

The University of the Free State’s (UFS) Faculty of Education, in collaboration with the Research and Development Unit from the Central University of Technology (CUT), hosted a colloquium on the field of technological higher education and its contribution to the knowledge society. Prof Marie Brennan and Prof Lew Zipin, both from Victoria University in Melbourne, Australia, presented the keynote addresses of the colloquium.

The past, present and future
The current fees protests in South Africa have caused universities to rethink and strategise new ways of delivering knowledge. Prof Brennan cautioned that when moving towards technological solutions for teaching, a crucial balance between past knowledge and practices and present and future knowledge and practices needed to be maintained.
“Knowledge is always dynamic, always generated from live problems, and therefore always relies on social interactions. Face-to-face interaction is removed by intense interaction with technology. If knowledge is presently linked to technology, we as academics must be able to move it. However, we should not neglect the indigenous knowledge that was generated through face-to-face interaction,” said Prof Brennan.
She purported that a reconnection between social relations and technology was important but to achieve this, a clearer pedagogical understanding of knowledge production was needed.

Never simplify complex problems

Prof Zipin said academics were constantly seeking complex problems and therefore could not reduce the complexity of a problem to simplify it for students entering the higher education space.
“We need to become a knowledge society. Ideologies often sway us not to look at the complexities of knowledge otherwise these ideologies would not be persuasive,” said Prof Zipin.

Is the technological move counterproductive?
Prof Zipin also cautioned that the move towards technological means for transferring knowledge had its own drawbacks. Institutions are a knowledge economy and its product is human capital. However, producing graduates who catered only to a technological society created downward mobility.
“People’s jobs are replaced by technology. This causes wages to decrease significantly because of structural inequalities, the move towards tech-based schooling should be done cautiously,” said Prof Zipin.

Simplicity not the ultimate sophistication
Prof Zipin concluded by stating that higher education had a responsibility to give its students the best possible future, this could be done by creating hegemonic relationships between institutions of higher learning, government and the private sector. Academics needed to fill the gap and apply their knowledge by applying complexity to social issues and allowing the complexity of these issues to flourish, the professor said.

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