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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

Race, technology, and maritime labour in the 19th century
2016-06-23


Prof John T. Grider

 

“When employers
impose
worker identity,
it creates problems.”

What does identity mean to people today, and how is it formed? Religion, politics, race, ethnicity, and gender make up individual and community identity. However, Prof John Grider (University of Wisconsin – La Crosse) is of the opinion that employment moulds our identity, since we spend so much time on the job.

Prof Grider joined the Institute for Reconciliation and Social Justice (IRSJ) on the Bloemfontein and Qwaqwa Campuses to discuss his research on the maritime industry, published in his book, Foreign Voyage - Pacific Maritime Labour Identity: 1840 to 1890. “When employers impose worker identity, it creates problems,” he said. Particularly, this “creates instability in communities, and a vulnerability and insecurity amongst the employees”.

To illustrate his point, Prof Grider expanded on the history of 19th-century Atlantic sailors, a highly-skilled workforce, who failed to adapt to changes in their labour environment. Initially, the sea-faring community was very diverse racially. However, as the Pacific, and particularly Asian, marine community gained precedence, this tide turned to such an extent that, in 1886, the Atlantic sailors formed their own Coastal Seamen’s Union in San Francisco, causing a split between Asian and non-Asian sailors. Atlantic sailors had failed to integrate with the new technology of the day (steam power), nor had they accepted the demographic changes that flooded their community rapidly with cheap labour from Chinese shores. 

Prof Grider highlighted the need to maintain an adaptable mentality in the ever- and rapidly-changing labour world, since division amongst workers could lead only to further exploitation of the workforce.

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