DOI: 10.5937/jaes0-25010
This is an open access article distributed under the CC BY 4.0
Volume 18 article 738 pages: 631 - 636
Wind energy is one solution to overcome the energy problem in Indonesia. This study aimed to analyze the effect of
cup diameter on the power performance of an HC-type vertical axis wind turbine (VAWT). The wind turbine used a
combination of an H-type Darrieus wind turbine and a type-C rotor VAWT. The Darrieus HC-rotor wind turbine blade
has a height H = 800 mm and diameter D = 800 mm with C-rotor variations on the tip with diameters of 76,2, 101,6,
and 152,4 mm. The wind tunnel used an electric motor with a power of 1 HP (740 Watt) and 1400 rpm connected to
a fan. The variation of wind speed was set to 2, 3, 4, 5, 6 and 7 m/s. The results showed that: (a) the highest rotation
speedal speed was achieved by the HC-rotor diameter of 76,2 on 105 rpm with a wind speed of 7 m/s; (b) the highest
value of the coefficient of power (Cp) is achieved by the HC-rotor diameter of 101,6mm (c) the highest value of the
coefficient of torque (Ct) is achieved with the HC-rotor diameter of 152,4mm (d) the Darrieus HC-rotor wind turbine
is suitable to be used in tropical regions that have low wind speeds. This result provides important information about
the effect of the C rotor radius on the performance of HC-rotor Darrieus wind turbine blade vertical axis.
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