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The average air density a ρ (Kg/m 3 ), The actual power density Pd (Watt/m 2 ) and the Weibull power density W P
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Wind speed Analysis is very important in the design or selection of wind conversion system for a given site. In this study, one year measured 10 minute time series average wind speed of Napier and Prince Albert both located in the Western Cape region of South Africa are analysed. The statistical distribution density is derived from the time series...
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Citations
... Part of the steps towards this commitment is contained in the final report "Integrated resource plan (IRP)" which has 56% of wind power in its first phase of its renewable energy feed in tariff program [2]. Recent studies [3] show a high potential of wind resources in the Western Cape region of South Africa. The study also indicated that the wind speed in this area can best be model using Weibull distribution. ...
This Paper estimates the capacity factors of twenty commercially available wind turbines based on the local wind characteristic of Napier and Prince Albert both located in the Western Cape region of South Africa. Ten minute average time series wind speed data for a period of one year is used for the study. Some of the key results show that the capacity factor for the wind turbines considered for the study ranges between 26.34% and 45.26% for Napier, 14.39% and 30.97% for Prince Albert. The study also indicates that a 10m increase in wind turbine hub height can increase the annual energy production by about 5%.
The Energy, Economic and Environmental (3E) assessments of hydrogen production using wind characteristics of the town of Memel in the Free State province of South Africa has been performed with the objective of generating electricity using fuel cells. This allows wind energy to be stored in chemical form in hydrogen with the purpose of generating electricity at a later stage thereby mitigating the intermittent nature of wind energy. The study showed that the town of Memel has considerable wind energy resources viable for hydrogen production with annual average wind speed of 7.4m/s at 60m anemometer height. This has a potential to produce 104 tons of hydrogen per annum with electricity generation potential of 1980 GWh when used in a proton exchange membrane (PEM) fuel cell with unit cost of 5.8$/kWh. The use of fuel cells was found to have potential to mitigate 588,000 kg of CO2 and 1670 kg of CO per annum. This paper provides scientific information useful for steering up hydrogen economy in South Africa.
