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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

Workplace bullying can cause a toxic teaching environment

2014-04-15

A study done by the University of the Free State’s Faculty of Education exposed how teachers in South Africa fall victim to bullying in the workplace on a daily basis.

This study by Prof Corene de Wet from our School of Open Learning and Dr Lynette Jacobs from our School of Education Studies, exposed the commonness of workplace bullying (WPB) among teachers.

More than 2 700 teachers, from all school levels in urban, township, informal settlements, rural and farm schools, took part in a 43-question survey. Teachers from eight provinces were included in the study.

About 90% of the respondents were victims of WPB by school colleagues and/or management during the 12 months that preceded the study.

These acts included direct shunning, having untrue things said about them, verbal abuse, threats and ridicule, insults and teasing, damaging of possessions as well as physical violence.

Dr Jacobs says WPB is an extremely serious problem in some South African schools, compared to the occurrence in other countries.

“South African teachers are working in ‘toxic’ environments characterised by disgruntled, overworked and stressed teachers. There often are high levels of learner-on-learner and learner-on-educator violence and bullying, communities fraught with moral degradation, racial conflict, violence, lawlessness and economic despair. In schools where despair and disrespect prevail, teachers often turn on one another,” she says.

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