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16/11/02 1 Wind Energy Mr Gareth Erfort Lecturer CRSES - University of Stellenbosch
16/11/02 1
Wind Energy
Mr Gareth ErfortLecturer
CRSES - University of Stellenbosch
The Centre for Renewable and Sustainable Energy Studies was established in 2007 to facilitate and stimulate activities in renewable energy study and research at Stellenbosch University.
The Department of Science and Technology has been funding the Renewable and Sustainable Energy (RSE) Hub at Stellenbosch University since its establishment in August 2006. The aims of the RSE Hub are to develop human capital, deepen knowledge, and stimulate innovation and enterprise in the field of RSE. Currently the DST is still sponsoring the work of the Centre with an annual grant administrated by the National Research Foundation.
Stellenbosch University was designated as the Specialisation Centre in Renewable Energy Technology as part of the Eskom Power Plant Engineering Institute (EPPEI). The research and teaching activities sponsored by Eskom focus on concentrating solar power (CSP) and wind energy and also includes the Eskom Chair in Concentrating Solar Power.
The Sasol Technology group sponsored the new facilities for the Centre for Renewable and Sustainable Energy Studies as well as the work and facilities of the Solar Thermal Energy Research Group at Stellenbosch University.
WIND ENERGY
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• Who is this for– Engineers, Technologists, technicians in the energy
sector. Architects, planners, developers and investors. Government and local officials
• Content– What we cover
• Structure– How we do it
• Synopsis– This module deals with the harvesting of energy from
wind. It addresses the availability of the resources, the types of systems and machines, their capabilities and limitations, the processes of setting up such systems and their associated costs and environmental impacts.
CONTENT
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• Introduction to wind energy– Brief history
– Position in the world
– Local market
Global status
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www.gwec.net/global-figures/interactive-map/
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CONTENT
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• Introduction to wind energy– Brief history
– Position in the world
– Local market
• Wind technology– Aerodynamics, Turbine classification, technology trends
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WIND TURBINE TECHNOLOGYsystem essentials
Power & Power Coefficient
• Enercon E70
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CONTENT
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• Introduction to wind energy– Position in the world
– Local market
• Wind technology– Aerodynamics, Turbine classification, technology trends
• Resources and Development– Basics of wind, resources for analysis, project development
Wind Power• What is wind?
– Kinetic Energy = Wind is air in motion.
• What causes wind to blow?– Driving force of motion: Pressure
differences in the atmosphere.
– Pressure gradients are created by changes in the air density at certain locations resulting in Convection / Influx of air.
– Density changes are caused by uneven absorption of heat from the surface of the earth or ocean heated by the sun.
– Wind is thus ultimately solar energy transformed into kinetic energy of masses of air through natural processes.
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Generic wind farm development process
Scoping Study
Pre-FeasibilityStudy
Construction and Operation
•Desktop:• Wind Resource Modeling• Basic Environmental Studies• Electricity Grid Investigation• Landholder Negotiations/Agreements
FeasibilityStudy
•Preliminary Wind Resource Assessment•Environmental fatal flaws assessment•Grid connection studies & technical fatal flaws assessment
•Bird & Bat Monitoring, Environmental Impact Assessment•Detailed site design optimisation•Network connection and Power Purchase Agreement•Equipment supply and construction contracts•Financing: raise debt and equity
De-commiss-ioning
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CONTENT
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• Introduction to wind energy– Position in the world
– Local market
• Wind technology– Aerodynamics, Turbine classification, technology trends
• Resources and Development– Basics of wind, resources for analysis, project development
• Social and Environmental impact– Capex, tariff, spin off markets, REIPPP
Local Economic Impacts
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STRUCTURE
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Mon Tue Wed Thu Fri Sat
Morning Info Session
Info Session
Info Session
Info Session
Guest Lecture
Group Presenation
Afternoon Site visit Tutorial Tutorial Turotial Group work Group Presentation
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Thank you
