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Enhanced energy-efficient parallel pumping using variable speed drive (VSD) technology
Author(s)
Onwunta, Onwunta Emea Kalu
Date Issued
2011
Type
Thesis
Publisher
Cape Peninsula University of Technology
Abstract
Global economic meltdown appears to be a new phenomenon in this 21 st century because
worldwide poor financial situation seemed forgotten after the Great Depression of the 1930s.
However, energy crisis has been a common worldwide issue and challenge since the October
1973 war in the Middle East which triggered the first of two waves of energy-price increases
in the 1970s. That event catapulted the debate about energy and conservation, from its
obscure beginnings, in academic and policy circles to sudden public prominence. The recent
co-incidence of South Africa's energy crisis with the global financial crisis was a double
tragedy. The main reason for the 2007 to 2008 energy crisis in South Africa was the
imbalance between electricity supply and demand
Globally about 40% of industrial electricity is consumed by Electric Motor-Driven Systems
(EMDS) and South African estimates are around 60%. Pumping systems are crucial industrial
EMDS and their energy demand ranges from 25% to 50% of the energy usage in certain
industrial plant operations. In South Africa, an estimated 15% of generated electrical power is
consumed by pumping systems.
worldwide poor financial situation seemed forgotten after the Great Depression of the 1930s.
However, energy crisis has been a common worldwide issue and challenge since the October
1973 war in the Middle East which triggered the first of two waves of energy-price increases
in the 1970s. That event catapulted the debate about energy and conservation, from its
obscure beginnings, in academic and policy circles to sudden public prominence. The recent
co-incidence of South Africa's energy crisis with the global financial crisis was a double
tragedy. The main reason for the 2007 to 2008 energy crisis in South Africa was the
imbalance between electricity supply and demand
Globally about 40% of industrial electricity is consumed by Electric Motor-Driven Systems
(EMDS) and South African estimates are around 60%. Pumping systems are crucial industrial
EMDS and their energy demand ranges from 25% to 50% of the energy usage in certain
industrial plant operations. In South Africa, an estimated 15% of generated electrical power is
consumed by pumping systems.
Additional information
Thesis (MTech(Electrical Engineering))--Cape Peninsula University of Technology, 2011.
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20131891_Onwunta_OEK_Mtech_Elec_Eng_2011_20131891.pdf
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