- Authors: Amalia Fajriyanti
- From: Engineering Physics, Institut Teknologi Bandung
Abstract:
The energy scarcity and inequality of supply in Indonesia encourage efforts to find an alternative energy, particularly for remote areas. Alternative energy is expected to derive from renewable energy as an unlimited source. Wind energy is considered to be potentially safe and clean solution to meet energy needs in remote areas. Previous research states that the south coast of Java island has a good potential. However, a feasibility study for the characteristics of diurnal and seasonal wind speed needs to be done before deciding to install wind turbines. The feasibility study is very important to estimate the amount of energy that can be produced, also determine the influence of wind speed variation of diurnal and seasonal on energy generated by the turbine. Thus, the selection for an appropriate wind turbine technology can be done. This study describes the diurnal, monthly and seasonal wind speed characteristics, also the wind potential in Cipatujah Beach, West Java. The data were collected from wind speed measurement at a height of 5 meters above surface, from March 2012 to March 2013. Weibull distribution is used as a method to determine the wind speed probabilities of occurrence. It shows that wind speeds during the day are more likely to produce energy than at night. The average wind speed over a period of 13 months at the site is 2.27 m/s. Wind potential obtained by wind turbine power calculations for KT500 with cut in and cut off value is 2.5 m/s and 12 m/s, respectively. The maximum energy was obtained during the peak time of monsoon, but minimum during season transitional. Total power obtained over a period of 13 months is 189.67 kWh, with an average of 14.59 kWh per month and 0.49 kWh per day.
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