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Zillergründl Dam
The Zillergründl Dam is an arch dam on the Ziller River in the upper Ziller Valley of Tyrol state, Austria. It lies east of Mayrhofen. The primary purpose of the dam is hydroelectric power generation and it supports a 360 MW pumped-storage power station. As part of the Zemm-Ziller Development, construction on the dam began in 1981 and, along with the Häusling Pumped Storage Power Plant, it was completed in 1986. The power plant was fully commissioned by 1988. The dam is the second tallest in Austria. Design and operation At an elevation of above sea level, the Zillergründl is a tall and long variable-radius arch dam with a structural volume of . The dam is wide at its crest and at its base. Its reservoir has a capacity of , of which is active (or "useful") capacity. At normal levels, the reservoir has a catchment area of . The reservoir operates at elevations from to , which is the draw-down level. Water released from the reservoir reaches the Häusling Power Plant do ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Verbund AG
Verbund AG, formerly known as Verbundgesellschaft or Österreichische Elektrizitätswirtschafts-AG, is Austria's largest electricity provider. Verbund covers around 40 percent of electricity demands in Austria and generates 90 percent thereof from hydro power. In addition, Verbund operates the supraregional power grid through its subsidiary APG. Verbund AG is listed on the Vienna Stock Exchange and in the ATX, the key index of Austrian stock-listed companies. The largest shareholder, at 51%, is the Republic of Austria. History 1947 saw the establishment of Verbund as "Österreichische Elektrizitätswirtschafts-AG" through the second nationalization act. In the post-war years, the company's most urgent task was the planning, construction and operation of large power plants as well as the operation of the supraregional power grid. At the same time, special purpose vehicles (SPVs) were established to promote the construction of large hydropower and thermal power plants. The share ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydraulic Head
Hydraulic head or piezometric head is a measurement related to liquid pressure (normalized by specific weight) and the liquid elevation above a vertical datum., 410 pages. See pp. 43–44., 650 pages. See p. 22, eq.3.2a. It is usually measured as an equivalent liquid surface elevation, expressed in units of length, at the entrance (or bottom) of a piezometer. In an aquifer, it can be calculated from the depth to water in a piezometric well (a specialized water well), and given information of the piezometer's elevation and screen depth. Hydraulic head can similarly be measured in a column of water using a standpipe piezometer by measuring the height of the water surface in the tube relative to a common datum. The hydraulic head can be used to determine a ''hydraulic gradient'' between two or more points. Definition In fluid dynamics, the ''head'' at some point in an incompressible (constant density) flow is equal to the height of a static column of fluid whose pressure at ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arch Dams
An arch is a curved vertical structure spanning an open space underneath it. Arches may support the load above them, or they may perform a purely decorative role. As a decorative element, the arch dates back to the 4th millennium BC, but structural load-bearing arches became popular only after their adoption by the Ancient Romans in the 4th century BC. Arch-like structures can be horizontal, like an arch dam that withstands the horizontal hydrostatic pressure load. Arches are usually used as supports for many types of vaults, with the barrel vault in particular being a continuous arch. Extensive use of arches and vaults characterizes an arcuated construction, as opposed to the trabeated system, where, like in the architectures of ancient Greece, China, and Japan (as well as the modern steel-framed technique), posts and beams dominate. Arches had several advantages over the lintel, especially in the masonry construction: with the same amount of material it can have larger ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydroelectric Power Stations In Austria
Hydroelectricity, or hydroelectric power, is electricity generated from hydropower (water power). Hydropower supplies 15% of the world's electricity, almost 4,210 TWh in 2023, which is more than all other renewable sources combined and also more than nuclear power. Hydropower can provide large amounts of low-carbon electricity on demand, making it a key element for creating secure and clean electricity supply systems. A hydroelectric power station that has a dam and reservoir is a flexible source, since the amount of electricity produced can be increased or decreased in seconds or minutes in response to varying electricity demand. Once a hydroelectric complex is constructed, it produces no direct waste, and almost always emits considerably less greenhouse gas than fossil fuel-powered energy plants. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dams In Austria
A dam is a barrier that stops or restricts the flow of surface water or underground streams. Reservoirs created by dams not only suppress floods but also provide water for activities such as irrigation, drinking water, human consumption, Industrial water, industrial use, aquaculture, and navigability. Hydropower is often used in conjunction with dams to generate electricity. A dam can also be used to collect or store water which can be evenly distributed between locations. Dams generally serve the primary purpose of retaining water, while other structures such as floodgates or levees (also known as Dike (construction), dikes) are used to manage or prevent water flow into specific land regions. The word ''dam'' can be traced back to Middle English, and before that, from Middle Dutch, as seen in the names of many old cities, such as Amsterdam and Rotterdam. Ancient dams were built in Mesopotamia and the Middle East for water control. The earliest known dam is the Jawa Dam (Jorda ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
