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Investor Presentaiton

Energies 2019, 12, 3658 22 of 37 the Brazilian wave power. In practice, only a fraction of this value can be extracted by the wave energy devices, which depends on different issues such as technical challenges, environmental impacts, economy, deferent use of the sea area, and social impacts. Nevertheless, only one-fifth of this potential is equal to approximately 35% of the Brazilian electricity demand in 2017 [183]. Table 5. Available wave power of the Brazilian coastline. Regions Parameters A B C D Length (km) ~1250 Average power (kW/m) Total power (GW) 21.1 26.4 24.2 ~1952 ~1452 ~2837 12.4 13.8 7.4 20.1 21.0 4.1.3. Ocean Thermal Energy Figure 16a shows the annual average AT (°C) between the water depth of 20 and 1000 m along the Brazilian coast. The results show that, except for the extreme South below 27 °S, the yearly average AT is always about 20 °C or higher along the Brazilian coast. The average gross power of a 10 MW OTEC plant (see Section 2.2.1) was calculated for 12 locations along the coastline. The selected points were located approximately at a distance between 30 and 200 km to the shore and had an annual average AT at between 20 and 1000 m of water depth of more than 20 °C. Figure 16b illustrates the annual variation in the gross power for the considered points. A greater average annual gross power, represented by the red solid line, can be observed for the regions D and C comparing to the regions A and B. Moreover, the results show smoother power production for the regions D and C comparing to the regions A and B. Table 6 shows the characteristics of the selected points as well as the P Pgross and Pnet Latitude 9°N 0° 9°S P12 P11 P7 P6 18°S 27°S P2 P1 P3. P4. P9 24 23 22 22 21 221 20 6 18 17 16 (MW) d P10 P11-P12-Annual Avg. 20 15 (D 10 gross 15 (MW) 20 20 AT (°C) d 1 gross (MW) 20 20 P (MW) 10 20 P7 P8 P9 Annual Avg. (C) P4 P5 P6 Annual Avg. (B) P1 P2 P3 Annual Avg. gross 15 (A) 15 50°W 45°W 40°W 35°W 30°W Longitude (a) 25°W 19 Jan Feb Mar Apr May Jun Jul Ago Sep Oct Nov Dec (Month) (b) Figure 16. (a) Annual mean AT (°C) between 20 and 1000 m and (b) the annual ocean thermal energy conversion (OTEC) Gross Power Density (PG in MW) at a depth of 1000 m considering the period between January 1, 2007 and December 31, 2017.
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