![]() : 37 Environmental context Īfter the seawall was built in 1994, pollution built up in the newly created Sihwa Lake reservoir, making its water useless for agriculture. The project cost of US$560 million was borne by the South Korean Government. The power station was built in 2011 and started to operate in 2012. The working basin area was originally intended to be 43 km 2 (17 sq mi) and has been reduced by land reclamation and freshwater dykes to 30 km 2 (12 sq mi), likely to be reduced further. The station's mean operating tidal range is 5.6 m (18 ft), with a spring tidal range of 7.8 m (26 ft). This slightly unconventional and relatively inefficient approach has been chosen to balance a complex mix of existing land use, water use, conservation, environmental and power generation considerations. Ten 25.4 MW submerged bulb turbines are driven in an unpumped flood generation scheme power is generated on tidal inflows only, and the outflow is sluiced away, i.e. The tidal barrage makes use of a seawall constructed in 1994 for flood mitigation and agricultural purposes. It is operated by the Korea Water Resources Corporation. ![]() When completed in 2011, it surpassed the 240 MW Rance Tidal Power Station, which was the world's largest for 45 years. Sihwa Lake Tidal Power Station is the world's largest tidal power installation, with a total power output capacity of 254 MW.
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