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Weathering the winter with energy efficiency

06 June 2019 | Story Valentino Ndaba | Photo Rian Horn

Solar Panels at UFS Qwaqwa Campus — Revolutionising electricity with sun power: Solar panels at the Qwaqwa Campus.

Over the past few years the University of the Free State (UFS) has been planting panels, now the time has come to reap. Solar farms produced a return on investment in the form of R1.4 million in savings as a result of photovoltaics (PV) between January and March 2019. Nicolaas Esterhuysen, an electrical engineer at the Department of University Estates also reported a 2.34% decline in electricity usage between 2013 and 2018.

Solar panels are the future

According to Esterhuysen, the solution to a power crisis lies in “either becoming more energy efficient or generating our own at a cheaper cost”. All campuses have managed to save a total of R5.4 million in 2018 through producing our own power (solar PV) and actively managing the instantaneous load demand with building management system (BMS) software.

Overall, ground-mounted PV installations at all campuses contribute 2609 kilowattpeak (kWp) under standard conditions. The Bloemfontein Campus accounts for 979kWp of that amount while the South Campus generates 762kWp, with the Qwaqwa Campus producing 748kWp, and the Paradys experimental farm bringing in 120kWp to the grand total (to be commissioned June 2019).

Rooftop PVs generate electricity through the 80kWp Muller Potgieter Building, the 255kWp Bloemfontein Campus computer lab, the 35kWp Qwaqwa Campus computer lab, 135kWp Qwaqwa Campus Mandela Hall, and 416kWp Thakaneng Bridge panels. This is a total of 921kWp.

Winter is coming with tariff terrors

A 15.63% electricity tariff increase is projected this year in light of the annual winter adjustments commissioned by Eskom and Centlec. To gear up for the associated spike in power use over this season, University Estates advises the Kovsie community to use energy efficiently. “Think twice before switching on the heating and make sure to switch it off when you leave the office,” advises Esterhuysen.

In addition to generating electricity, saving initiatives such as implementing light-emitting diode (LED) lighting with motion sensors and actively managing demand at peak times have been implemented.

What’s next?

The next step is to rethink dated mechanical installations that are used to heat some of our older buildings. Replacing similar installations across all of the campuses are some of the ways the university intends to escalate energy efficient in future.

News Archive

New research informs improved treatment of brain inflammation

2017-10-13

Dr Adepemi Ogundeji, researcher in the Department of Microbial,
Biochemical and Food Biotechnology at the
University of the Free State,and Dr Olihile Sebolai,
her study leader from the same department.
Photo: Charl Devenish

Microbiologist Dr Adepemi Ogundeji has uncovered a new use for an old medicine that can potentially save lives and money. Under the guidance of her study leader, Dr Olihile Sebolai, Dr Ogundeji set out to fight a fungal disease caused by Cryptococcus neoformans. Drs Ogundeji and Sebolai are from the University of the Free State Department of Microbial, Biochemical and Food Biotechnology.

Dr Ogundeji is passionate about education. “My aim will always be to transfer knowledge and skills in the microbiology field,” she said. “Dr Ogundeji’s study is celebrated in that it found a new purpose for existing medicines. An advantage of repositioning old medicines is by-passing clinical trials, which sometimes take 20 years, and the safety of such medicines is already known,” Dr Sebolai, explained.

Cryptococcus infections are difficult to control and often lead to brain inflammation. In layman’s terms: “Your brain is on fire”. People with HIV/Aids are especially vulnerable, surviving only about three months without treatment. Such patients may present with a Cryptococcus-emergent psychosis, and some with an out-of-control inflammatory condition when initiated on ARVs.

Dr Ogundeji found that the clinically recommended dosage of aspirin (anti-inflammatory medicine), and quetiapine (anti-psychotic medicine) is sufficient to control the infection. Her exceptional work was readily published in some of the foremost journals in her field, namely, Antimicrobial Agents and Chemotherapy and Frontiers in Microbiology

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