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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

Academic produces another book

2009-12-01

Academic, author and motivational speaker, Dr Michael van Wyk (pictured), has written another book titled Cooperative learning as a teaching strategy for the classroom: A practical guide for economics teachers.

His latest offering provides a sound theoretical framework and practical ways on how to implement the different cooperative learning techniques. It unpacks the practical aspects of the outcomes-based approach, the National Curriculum Statement for the Further Education and Training phase and cooperative learning techniques for the economics classroom.

This easy-to-read book offers a thorough introductory text for economics teachers and economics students, as well as lecturers and researchers.

“This theoretical and practical guide will support Economics teachers to present their subject in practical ways that are meaningful and learner centred,” he said.

“If this can be achieved, learners will engage effectively in the subject and an interest in the learning content may be evoked.”

The book covers the following aspects:

It introduces the foundations of the outcomes-based education approach (OBE) and the new curriculum model for South African schools.
It examines the theoretical underpinnings and practical application of cooperative learning as a teaching strategy.
It provides practical guidelines for application of cooperative learning techniques.

“This book gives an outline, in a constructive way, on how to apply the cooperative learning techniques such as Teams Games Tournaments (TGT), Student Teams Achievement Divisions (STAD), role-play, simulations, Economics quizzes, small group teaching and research projects in the classroom,” he said.

“These techniques have the potential to make a positive contribution to the enhancement of academic performances, development of social skills and an improvement of the learning skills of the learners.”

The book is designed as a theoretical and practical guide for Economics Education students, Economics teachers, Learning Area Economics and Management Science facilitators, Curriculum developers, Economics subject advisors, researchers and trainers; for the successful implementation of cooperative learning as a teaching strategy.

Dr Van Wyk is a staff member of the Department of Curriculum Studies in the Faculty of Education at the University of the Free State (UFS). He also serves on the board of the South African Foundation on Economics and Financial Education (SAFEFE).

Photo: Mangaliso Radebe

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