Yudi Kurniawan, Dominicus Danardono, Dwi Prija Tjahjana


Wind energy is a potential natural resource that is abundant and clean so that it can be used to answer the problem of the crisis of non-fossil energy sources. The tool that can be used to convert the kinetic energy of the wind into electrical energy is a wind turbine. Crossflow wind turbines are one of the modified VAWT types from banki water turbines. Cross-flow wind turbines have a simple design, high torque coefficient at low tip speed ratio, good self starting, not noisy and more stable so that it is suitable for application in urban areas. To obtain a cross-flow wind turbine with good performance, several design parameters must be considered. The parameter number of blades is an interesting concern for the development of the design of cross-flow wind turbines. This experimental test aims to find the highest rotation of variations in the number of crossflow blades. Variations in the number of blades are 16, 20 and 24. Each variation of blade number is tested with 5 different wind speeds, namely 4.99 m / s, 5.94 m / s, 6.49 m / s, 6.99 m / s and 7.27 m / s. The test results show that the highest rotation speed is obtained in wind turbines with a number of blades 20 at a wind speed of 7.27 m / s. the highest rotation speed is 250 rpm.

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