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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

Project aims to boost science pass rate

2009-01-19

Attending the launch of the HP grant of about R1 million to the UFS are, from the left: Mr Leon Erasmus, Country Manager for HP Technology Services in South Africa, Prof. Teuns Verschoor, Acting Rector of the UFS, and Mr Cobus van Breda, researcher at the UFS's Centre for Education Development and manager of the project.
Photo: Lacea Loader

The University of the Free State (UFS), in partnership with computer giant Hewlett Packard (HP), wants to boost the pass rate of its science students by using mobile technology.

The UFS is one of only 15 universities across Europe, the Middle East and Africa and the only university in South Africa to receive a grant from HP to promote mobile technology for teaching in higher education valued at USD$ 100,000 (or about R1 million). Altogether 80 universities from 28 countries applied for the grant.

“Last year HP invited a number of selected universities to submit proposals in which they had to explain how they are going to utilise mobile technologies in the redesign of a course that is presented at the university. The proposal of the Centre for Education Development (CED) at the UFS entitled “Understanding Physics through data logging” was accepted,” says Mr Cobus van Breda, researcher at CED and manager of the project.

According to Mr van Breda, students who do not meet the entrance requirements for the three-year B.Sc. programme have to enroll for the four-year curriculum with the first year actually preparing them for the three-year curriculum.

In order to increase the success rate of these students, the project envisages to enhance their understanding of science principles by utilising the advantages of personal computer (PC) tablet technology and other information and communication technologies (ICT) to support effective teaching and learning methodology.

“By using PC tablet technology in collaboration with data-logging software, a personal response system, the internet and other interactive ICT applications, an environment different from a traditional teaching milieu is created. This will consequently result in a different approach to addressing students’ learning issues,” says Mr van Breda.

The pilot project was launched during the fourth term of 2008 when 130 first-year B.Sc. students (of the four-year curriculum) did the practical component of the physics section of the Concepts in General Science (CGS) module by conducting experiments in a computerised laboratory, using data-logging software amongst other technology applications. “The pilot project delivered good results and students found the interactive application very helpful,” says Mr van Breda.

”The unique feature of the latter is the fact that real-life data can be collected with electronic sensors and instantly presented as computer graphs. It can then be analysed and interpreted immediately, thus more time can be devoted to actual Science principles and phenomena and less time on time-consuming data processing,” says Mr van Breda.

The CGS module can be seen as a prerequisite for further studies in physics at university level and in this regard it is of essence to keep looking for new models of learning and teaching which can result in student success. This year the theoretical and practical component of the physics section of the CGS programme will be done in an integrated manner.

Media Release
Issued by: Lacea Loader
Assistant Director: Media Liaison
Tel: 051 401 2584
Cell: 083 645 2454
E-mail: loaderl.stg@ufs.ac.za
16 January 2009

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