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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

2016: The year that was on the Qwaqwa Campus

2016-12-19

Dr Lehlohonolo Koao believes his research
will improve ordinary lives.
Photo: Thabo Kessah

Prof Lis Lange making a point about
the governance, leadership, and
management processes at the university.
Photo: Thabo Kessah

One of the leading performers of
I-DENT-I-TIES, Baanetse Mokhotla.
Photo: Thabo Kessah

The year 2016 has seen the Qwaqwa Campus become a hive of activity from all fronts.

Lithium-ion batteries research

On the research front, Dr Lehlohonolo Koao started work on the research that is aimed at improving lives of ordinary people. His research project focuses on improving the efficiency of lithium-ion batteries that are now commonly used in portable electronics, such as cellphones and laptops.

“This study will enhance power retention in the batteries for improved daily life since cellphones, solar panels, and laptops, to mention only a few, are now a way of life.’’

Dr Koao is a Senior Lecturer in the Department of Physics, where he specialises in solid state materials. He is also a member of the Vice-Chancellor’s Prestige Scholars Programme.

Spotlight on the academic project

To create a conducive teaching and learning environment on the campus amid the academic difficulties experienced during the year, the Institute for Reconciliation and Social Justice (IRSJ) hosted a critical conversation that was facilitated by Vice-Rector: Academic, Prof Lis Lange.

Prof Lange interacted with students who asked her very difficult, but critical questions relating to internal UFS processes aimed at academic excellence. Issues that were discussed included developing a common understanding on governance, leadership, and management processes at the university.

Student talent unearthed

This was a year during which massive student talent was unearthed by an unusual stage play called I-DENT-I-TIES. This large-scale interdisciplinary performance project afforded Qwaqwa students an unforgettable experience. This was according to Baanetse Mokhotla, one of the leading performers.

“I have personally learnt a lot about performing arts and also grew as an individual.”

The creative minds behind the play included New York-based Dutch director, Erwin Maas; Vienna-based Dutch theatre designer, Nico de Rooij; Djana Covic, a Serbian performance-craft-artist based in Vienna; and South African film and stage legend Jerry Mofokeng. The production was part of this year’s Vrystaat Arts Festival in Bloemfontein.

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