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21 September 2022 | Story Leonie Bolleurs | Photo Johané Odendaal and Edward Lee
UFS Solar car
Team UFS entered the Sasol Solar Challenge for the very first time this year, competing with seven other teams and showcasing their technological input and innovation.

Excitement. Nervousness. A thousand thoughts going through our minds, but primarily “Are we really ready for the challenges that lie ahead?” and “What did we get ourselves into?” In the moments leading up to this year’s Sasol Solar Challenge, these were the thoughts and emotions of Team UFS, who entered their solar car, Lengau.

“But I had confidence in the team,” says Dr Hendrik van Heerden from the UFS Department of Physics at the University of the Free State (UFS) and project manager of Team UFS who entered the challenge for the very first time this year.

Testing perseverance

Entering the Sasol Solar Challenge – a biennial competition that has been running since 2008 – Team UFS competed against seven other teams (representing local and international universities, high schools, and engineering teams), sharing the public roads of South Africa with trucks and regular traffic, sometimes experiencing steep mountain climbs, testing not only their technological input and innovation, but also their perseverance over an eight-day period. 

“One of our main challenges was the long time on the road, to which the heavy weight of the solar car, efficiency of the solar panels, and the effective charging of the battery contributed,” says Dr Van Heerden, stating that these problems were difficult to tackle with the small budget they had. “We, however, stayed positive and was determined to pull through.” 

“We were also open for learning from the other teams, the scrutineers, and observers regarding the mechanical, electrical, and body of competing solar cars. Thus, building knowledge and collaborating is a success we celebrate,” he adds.

In the end it paid off, as Team UFS completed the race, covering a distance of more than 500 km and ending in seventh place overall. The team that finished with the greatest distance covered within the allotted time won the challenge, in this instance the Brunel Solar Team, covering 4 228,2 km.

Dr Van Heerden believes that they did exceptionally well for a debut team, proving themselves against the best. “I am of the opinion that this challenge made us stronger and gave each of us a new perspective on how we should approach life,” he adds.

“As we are all enthusiastic about science and engineering, this challenge inspired us to build towards a future where renewable energy could be an important source of energy in South Africa.”
For a debut team, we did exceptionally well, proving ourselves against the best. – Dr Hendrik van Heerden.

Learning the ropes

The teams left Carnival City in Johannesburg on 9 September 2022 and arrived at the finish line at the V&A Waterfront in Cape Town on Friday 16 September 2022.

Talking about the next race, Dr Van Heerden says he wants to build a better, more effective solar car. “We strive to continuously improve the design, technology, and science going into our car,” he says. 

“For this challenge, we were interested in learning about the mechanical, electrical, and overall body of a solar car. Hence, our solar vehicle was designed well enough to participate and reliable enough to succeed.”

According to him, their focus will shift to competing against the other teams for the next Sasol Solar Challenge. “We will also be more prepared, since we now know what to expect from the challenge. It was our first time participating in the Sasol Solar Challenge, and we’ve learnt so much from the past two weeks – we will carry that forward to the next challenge.

 

News Archive

Medical team performs first hybrid procedure in the Free State
2014-12-08

The days when a heart operation meant hours in an operating theatre, with weeks and even months of convalescing, will soon be something of the past.

A team of cardiologists from the University of the Free State’s (UFS) Faculty of Health Sciences once again made medical history when they performed the first hybrid procedure in the Free State.

The Department of Paediatric Cardiology, in conjunction with the Department of Cardiothoracic Surgery, performed this very successful procedure on a 45-year-old woman from Kuruman.

During the procedure of 30 minutes, the patient’s thorax was opened up through a mini thoracotomy to operate on the beating heart.

“The patient received an artificial valve in 2011. Due to infection, a giant aneurism developed from the left ventricle, next to the aorta. Surgery would pose a very high risk to the patient. Furthermore, her health was such that it would contribute to problems during open-heart surgery,” explains Prof Stephen Brown, Head of the UFS’s Department of Paediatric Cardiology.

“After the heart was opened up through a mini thoracotomy, the paediatric cardiologists performed a direct puncture with a needle to the left ventricle cavity. A Special sheath was then placed in the left ventricle to bypass the catheters. Aided by highly advanced three-dimensional echocardiography and dihedral X-ray guidance, the opening to the aneurism, located directly below the artificial aorta valve, was identified and the aneurism cannulated.”
 
During the operation, a special coil, called a Nester Retractor, was used for the first time on a patient in South Africa to obtain stasis of extravasation and ensure the stability of devices in the aneurism.

“This is highly advanced and specialist work, as we had to make sure that the aneurism doesn’t rupture during manipulation and the devices had to be positioned in such a way that it doesn’t cause obstruction in valve function or the coronary artery. The surgical team was ready all the time to switch the patient to the heart-lung machine should something go wrong, but the procedure was very successful and the patient was discharged after a few days.”

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