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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

Architecture gets unconditional validation

2012-10-15

Three programmes of the Department of Architecture at the university received an extended unconditional validation from the South African Council for the Architectural Profession (SACAP) and the Commonwealth Association of Architecture (CAA).

The programmes are evaluated every four years and the previous evaluation in 2008 was also unconditional. The programmes that were validated are BAS, BAS (Hons.) and M.Arch. (Prof).

Mr Jonathan Manning, chairperson of the board of eight people that visited the department, says the department’s standards have improved more since the previous visit. He expressed his apprectiation for the departement’s unique specialist approach to alternative building methods, tours, winter schools, the annual Sophia Gray lecture, the good team of lecturers and the impressive Architecture building.

Two members of the board who visited the department are from the CAA.

Mrs Martie Bitzer, Departmental Chairperson, says the validation proves that the programmes are not only recognised nationally but also internationally. “It confirms that the students are at the right place at the right time in terms of the vision of the UFS, namely to be an internationally recognised university.”

The validation of the CAA means that the qualifications are recognised in all the Commonwealth countries.

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