Investor Presentaiton
Energies 2019, 12, 3658
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performed at the Ocean Technology Laboratory (LabOceano) of the UFRJ. Figure 19 shows the
medium-scale model at a ratio of 1:10 which was tested under regular and irregular wave conditions
corresponding to the predominant wave climate at the location of installation [187,188]. As a result
of the experimental tests, a capture width ratio of between 19% and 36% was observed for the wave
energy converter.
(a)
(b)
Figure 19. COPPE hyperbaric wave converter: (a) medium-scale model with a ratio of 1:10 at
LabOceano [187]: (b) installed full-scale prototype.
A full-scale prototype with a capacity of 100 kW was deployed at the Pecém port in Northeast
Brazil (Figure 19b). The device was installed on two concrete bases, 12 m in length, built on a breakwater.
The oscillating part, which consists of a floater, 10 m in diameter, and a mechanical arm, 22 m in length,
is connected to two skids mounted on the concrete bases.
4.2.2. COPPE Nearshore WEC
The system is a point absorber WEC type with a capacity of 50 kW that consists of an oscillating
body and a bottom-mounted support structure. The oscillating part is a floating conical cylinder which
is allowed to move only in the heave direction (Figure 20). The fixed structure consists of four columns
with very small diameters relative to the wavelengths (no diffraction). The structure is mounted on the
seabed through a concrete base. Eight roller bearings facilitate oscillation of the buoy in the vertical
direction (heave). They are placed on the top and bottom of the cylindrical section.
Heave
Stem
Generator
System
Topside
Columns
Bearings
Buoy
Base
Seafloor
Figure 20. Components of the COPPE nearshore WEC.View entire presentation