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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

IRSJ Research fellow embarks on historic ‘voyage’

2017-12-11

Prof John T Grider, making the maritime past alive again in the minds
of a new generation.
Photo: Eugene Seegers

Prof John Grider, Associate Professor of History at the University of Wisconsin-La Crosse in the USA and a Research Fellow in the Institute for Reconciliation and Social Justice (IRSJ) at the University of the Free State (UFS), has launched a book based on more than a decade of research into the Pacific maritime labour identity. His monograph, entitled A Foreign Voyage—Pacific Labour Identity, 1840-1890, delves into the history of the maritime industry, not only as a vehicle for expanding the processes of capitalism, colonialism, industrialisation, and globalisation, but is also exploring the impact of this industry on the shifts in gender, race, class, and technology.

As a student in Colorado, a homesick Grider tried to connect with his coastal roots via research. “Before I started to explore the maritime history, I thought of the ocean as a type of boundary that you sometimes need to cross. The truth is that globalisation happens on ships.” Prof Grider’s passion for Pacific maritime labour identity generates colourful discussions on the topic. Masculine sailors confronted by technological de-skilling that corroded away their identity, come to life as he talks and writes. “I try to show students that history is more than a story about the powerful few, and that everyday people, who may seem powerless, play a major role in shaping the past and the future.”

This monograph is based on first-hand, previously unpublished accounts of daily life at sea, often from ships’ logs and the diaries kept by the men who sailed them. The culmination of much painstaking research and supporting evidence, this book investigates the complex interplay between gender, class, and race sourced from the narratives of men who found themselves working in the transforming Pacific maritime industry during the mid-nineteenth century. A powerful lesson to be learnt from this fascinating segment of maritime labour history, is adaptability, “especially in today’s rapidly changing labour world”, Prof Grider says.

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