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Pollupalai and Vallimunai Wind Farms : ウィキペディア英語版 | Pollupalai and Vallimunai Wind Farms
The Pollupalai and Vallimunai Wind Farms are two wind farms built together by Joule Power and Beta Power, on the north-eastern shore of the Jaffna Lagoon, in Pachchilaipalli, Sri Lanka. Both wind farms are owned by the parent company Windforce, and have an installed capacity of each,〔(【引用サイトリンク】url=http://www.windforce.lk/power-projects/joule-power.html )〕〔(【引用サイトリンク】url=http://www.windforce.lk/power-projects/beta-power.html )〕 and an annual production of approximately . The wind farms are the first-ever to be constructed in the Northern Province of Sri Lanka. == Wind turbines == Both wind farms utilizes a total of sixteen wind turbines, which has an installed capacity of per turbine. The turbines operate at 9–17.3 RPM, and has a rotor diameter of and a swept area of . The tubular tower section has a hub height of , and is made up of four sections.〔(【引用サイトリンク】url=http://www.regenpowertech.com/104/technical-data )〕 The wind turbine's operating wind speed is , with cut-in and cut-out wind speeds of and respectively. The turbines can survive wind speeds of up to .〔 All 16 turbines are placed apart in a single row, facing the lagoon. The site's average wind speed is , with an air density of .〔
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