PERANCANGAN INSTALASI PEMBANGKIT ARUS MODULAR PADA TANGKI UJI ARUS-GELOMBANG MULTIFUNGSI
Abstract
A modular current generator is a device used to generate current in a test tank using pump as a fluid distributor. The flowing current in the test tank can be used to drive a water turbine to produce electrical energy. Research and testing on ocean waves and currents in Indonesia are still limited due to high cost. Based on these conditions, the design of a modular current generating device in a laboratory-scale wave-current test tank was carried out. Calculation was done first to determine its flow rate, pump specifications, and turbulent filter dimensions. Based on it, the design was carried out on a test tank with dimensions of 6 x 2 x 1.5m. The flow velocity is 0.02 m/s with a Reynolds number = 200000 including the transition flow from laminar to turbulent. The pump used is a centrifugal pump, KSB Etanorm 125-100-200, which can deliver fluid with a capacity of 170 m3/h, power of 5 kW and a rotation speed of 1450 rpm. The motor is KSB B3 Type Of Construction, 4-Pin 132 M with a power of 7.5 kW and a torque of 47.73 Nm. A honeycomb-shaped (hexagonal) turbulent filter was also installed to reduce the turbulent influence on the flow.
