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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 … Two … One … Lift off! Naval Hill Planetarium is blasting the public off into space
2014-02-28

History was made on 1 November 2013 when the first digital planetarium in sub-Saharan Africa was inaugurated – right here in Bloemfontein. Due to the involvement of the University of the Free State, in partnership with a host of sponsors, the public can now visit the outer reaches of our universe from the top of Naval Hill.

A digital dome was fitted into the existing observatory structure, is a 12-metre seamless aluminium screen, complemented by a powerful surround-sound system and multiple data projectors. The result: an immersive journey through space which feels very close to reality.

The response from the community has been overwhelming, with a booming interest in the night sky and galaxies stretching into the unknown. Several exhilarating shows – each lasting about 60 minutes – are scheduled for the next couple of months.

One of these ‘flights of fancy’ includes the show Space Junk to be screened twice a month. Space Junk complements the blockbuster science fiction thriller, Gravity, that showed at the movies during the last few weeks of 2013.

Booking for this show is essential.

Rates:

Adults: R50
Learners: R30
Pensioners: R30

You are welcome to send any enquiries to Yolandie Loots at FickY@ufs.ac.za or contact her directly at 051 401 9751.

Rates and dates for group bookings are available on request.

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