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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

Monkey research attracts international attention

2016-07-11

Prof Trudy Turner from the University of
Wisconsin-Milwaukee and Prof Paul Grobler
from the Department of Genetics at the
University of the Free State, together with one
of the students researching monkey genes.
Photo: Siobhan Canavan

For this year’s Summer School programme, Prof Paul Grobler, from the University of the Free State Department of Genetics focuses on research about the conflict between monkeys and humans in areas where monkeys are regarded as problem animals.

Global expert part of research

This year, Prof Grobler is hosting a group of students and lecturers from the United States of America (USA). The group includes Prof Trudy Turner from the University of Wisconsin-Milwaukee (UWM), a global expert on vervet monkeys. She has been working with the Department of Genetics at the UFS for the past fifteen years, and has also been appointed as an Affiliated Professor in the department.

“The Summer School programme is an opportunity for the American Primatology students to gain practical experience in Africa,” says Prof Grobler.

International interest in Summer School

This year’s Summer School programme involves four lecturers and nine students. The lecturers are from the University of Wisconsin-Milwaukee (UWM), the University of California, Los Angeles (UCLA), Boston University, and Central Washington University.

“We use the genetic information to determine
how monkeys historically infiltrated the
different areas in South Africa.”

This year’s focus is on the genetic structure of the monkeys in South Africa, and research that is being done on the differences and similarities in monkeys from different areas. “We use the genetic information to determine how monkeys historically infiltrated the different areas in South Africa,” says Prof Grobler.

Local nature reserve acting as host

The group will perform field work, including observing monkeys in the Soetdoring Nature Reserve, as well as laboratory work in the department, where they will be assisted by two laboratory technicians.

Two years ago, Prof Grobler and his department tested this idea on a smaller scale, and now they hope to make this a regular event.

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