Centre for Renewable Energy Sources Literature review

Centre for Renewable Energy Sources - Literature review Example Ocean wave’s energy is solar energy in its concentrated form. Cruz (2008) describes the process of wave creation as follows: â€Å"the sun produces temperature differences across the globe, causing winds that blow over the ocean surface. These cause ripples, which grow into swells.† (p.1) Ocean waves are distinguished by the highest level of energy density in comparing with other energy sources. Brooke (2006) asserts that the density of wave energy just below ocean surface is five times higher than the density of energy of wind 20m above the sea surface, and 20 to 30 times than the density of solar energy. The theoretical potential of electricity production by using of waves is enormous, according to Tulloch (2010); it can reach up to 80,000 Terawatt hours a year, â€Å"almost five times the world’s annual electricity consumption†. Drew et al (2009) mention several other characteristics of ocean waves providing significant advantages of using them for ener gy production: Ocean wave’s energy is solar energy in its concentrated form. Cruz (2008) describes the process of wave creation as follows: â€Å"the sun produces temperature differences across the globe, causing winds that blow over the ocean surface. These cause ripples, which grow into swells.† (p.1) Ocean waves are distinguished by the highest level of energy density in comparing with other energy sources. Brooke (2006) asserts that the density of wave energy just below ocean surface is five times higher than the density of energy of wind 20m above the sea surface, and 20 to 30 times than the density of solar energy. The theoretical potential of electricity production by using of waves is enormous, according to Tulloch (2010); it can reach up to 80,000 Terawatt hours a year, â€Å"almost five times the world’s annual electricity consumption†. Drew et al (2009) mention several other characteristics of ocean waves providing significant advantages of usi ng them for energy production:†¢ Relatively low negative environmental impact. It is generally considered that using of waves as the source of renewable energy does not cause CO2 emissions.†¢ Waves are much stronger in winter by nature, so seasonal variability of their energy follows the electricity demand in temperate climates.  Ã¢â‚¬ ¢ Waves also can transfer energy on large distances with little losses.†¢ Wave power devices can produce electricity up to 90 percent of the time, while wind and solar power devices only 20–30 percent (p.888).