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A windpump is a wind-driven device which is used for pumping water. The windmills at Kinderdijk in the village of Kinderdijk, Netherlands is a UNESCO World Heritage Site De Olifant at Burdaard, Friesland. Windpumps were used to pump water since at least the 9th century in what is now Afghanistan, Iran and Pakistan. [1]
The entire mill has to be rotated to face the wind. To accomplish this two types of tjasker have been developed. In the first type, known as paaltjasker (English: post tjasker), the mill is supported on and turned around a central post. The Archimedes' screw pumps water from the outer circular ditch to a central circular ditch or pool.
Dutch windmills are normally used for pumping water out of places. He first built a small windmill much like the one standing today. After hearing of power to be had from steam, he wrote to James Watt and Matthew Boulton to order an improved version of the Newcomen engine.
In this nation more than others, "windmill" is often used to refer to what are properly termed windpumps bringing up water for agriculture. This is at least partly due to usage by windpump builders Eclipse Windmill Company (1873) and Aermotor Windmill Company (1888, the sole surviving US "windmill" manufacturer [1]).
The windmills at Kinderdijk in the village of Kinderdijk, Netherlands is a UNESCO World Heritage Site. A windmill is a structure that converts wind power into rotational energy using vanes called sails or blades, by tradition specifically to mill grain (), but in some parts of the English-speaking world, the term has also been extended to encompass windpumps, wind turbines, and other applications.
For the operation of a small wind turbine with a capacity below 50 kilowatt the tariff amounts to 8.5 Euro-Cent for a period of 20 years. Due to the low feed-in tariff and high electricity prices in Germany, the economic operation of a small wind turbine depends on a large self-consumption rate of the electricity produced by the small wind turbine.
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