Estimation of Potential Energy Generated from Tidal Stream in Different Depth Layer at East Flores Waters Measured by ADCP

Abstract

Tidal works on the currents occur in each layer with significant variations. Variations of types of tidal media are very appropriate to the phase of the tides. Measurement of currents in each layer is necessary to assess the potential that can be used in determining and studying the placement of energy sources as a source of energy to support renewable energy in East Flores.A 15day measurement with the Acoustic Doppler Current Profile (ADCP) instrument can record the speed profile in the study area which has tidal current variabilities and power density variations in the verticalcurrent profiles. The analysis showed that there were two layers of depth with very optimum potential energy: at -3.5 - -5.5 meters with the highests speed of tidal current 3.69m/s and -7.5 - -9.5 meters with the highests speed of tidal current 3.68m/s from the Lowest Astronomical Tide (LAT). Each layers has different character, the upper layer has a maximum-high kinetic power density of 25.71 kW/m 2 at layer 10 and 25.43 kW/m 2 at layer 9 and the bottom layer had an average kinetic power density of 11.64kW/m 2. This bottom layer had the potential with a lower capacity, it shows that this site is also applicable for seabed mounted tidal turbines.