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Búrfell Hydroelectric Power Station
The Búrfell hydroelectric power plant (Búrfellsstöð or Búrfellsvirkjun in Icelandic) is a run-of-river hydroelectric power plant located in the Þjórsá valley in southwest Iceland. It is operated by Landsvirkjun. It was, since its construction in 1969, until the construction of the Kárahnjúka power plant in 2008, the largest power plant in Iceland with a capacity of 270 MW (increased to 370 MW in 2018). It was mainly built to supply electricity to an aluminum factory located in Straumsvík, 3 km west of Hafnarfjörður. History The idea of harnessing the energy of the Þjórsá River at Búrfell Mountain was proposed in 1917. For two years, the Norwegian engineer Gotfred Sætersmoen conducted a study on the development of hydroelectricity in the Þjórsá region. He proposed five stations, Búrfell being by far the most important. In 1960, the project was seriously considered. A project of this magnitude could be economically very interesting if the electricit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Icelandic Language
Icelandic (; is, íslenska, link=no ) is a North Germanic language spoken by about 314,000 people, the vast majority of whom live in Iceland, where it is the national language. Due to being a West Scandinavian language, it is most closely related to Faroese, western Norwegian dialects, and the extinct language, Norn. The language is more conservative than most other Germanic languages. While most of them have greatly reduced levels of inflection (particularly noun declension), Icelandic retains a four-case synthetic grammar (comparable to German, though considerably more conservative and synthetic) and is distinguished by a wide assortment of irregular declensions. Icelandic vocabulary is also deeply conservative, with the country's language regulator maintaining an active policy of coining terms based on older Icelandic words rather than directly taking in loanwords from other languages. Since the written language has not changed much, Icelandic speakers can read cla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Norwegians
Norwegians ( no, nordmenn) are a North Germanic ethnic group and nation native to Norway, where they form the vast majority of the population. They share a common culture and speak the Norwegian language. Norwegians are descended from the Norse of the Early Middle Ages who formed a unified Kingdom of Norway in the 9th century. During the Viking Age, Norwegians and other Norse peoples conquered, settled and ruled parts of the British Isles, the Faroe Islands, Iceland and Greenland. Norwegians are closely related to other North Germanic peoples and descendants of the Norsemen such as Danes, Swedes, Icelanders and the Faroe Islanders, as well as groups such as the Scots whose nation they significantly settled and left a lasting impact in. The Norwegian language is part of the larger Scandinavian dialect continuum of generally mutually intelligible languages in Scandinavia. Norwegian people and their descendants are found in migrant communities worldwide, notably in the Un ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Andritz AG
Andritz AG is an international technology group, offering plants, equipment, systems and services for various industries. The group's headquarters are in Graz, Austria. The group gets its name from the district of Andritz in which it is located and is listed on the Vienna Stock Exchange. Andritz employs more than 27,000 employees at over 280 production and service facilities. In 2020, the company reported a revenue of EUR 6.7 billion, and a net income of EUR 203.7 million. Business areas Andritz consists of 4 main business areas: *Hydro *Pulp and Paper *Metals *Separation and the business fields Feed & Biofuel Pumps Automation Andritz Metals The business area Andritz Metals (former "Rolling Mills and Strip Processing") is the third largest business unit. Andritz Metals designs, develops and erects complete lines for the production and further processing of cold-rolled carbon steel, stainless steel and non-ferrous metal strips, including furnaces, presses and acid regenerat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Francis Turbine
The Francis turbine is a type of water turbine. It is an inward-flow reaction turbine that combines Radial turbine, radial and Axial flow turbine, axial flow concepts. Francis turbines are the most common water turbine in use today, and can achieve over 95% efficiency. The process of arriving at the modern Francis runner design took from 1848 to approximately 1920. It became known as the Francis turbine around 1920, being named after British-American engineer James B. Francis who in 1848 created a new turbine design. Francis turbines are primarily used for producing electricity. The power output of the electric generators generally ranges from just a few kilowatts up to 1000 MW, though mini-hydro installations may be lower. The best performance is seen when the Hydraulic head, head height is between . Penstock diameters are between . The speeds of different turbine units range from 70 to 1000 rpm. A Wicket gate (hydraulics), wicket gate around the outside of the Water tur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Penstock
A penstock is a sluice or gate or intake structure that controls water flow, or an enclosed pipe that delivers water to hydro turbines and sewerage systems. The term is inherited from the earlier technology of mill ponds and watermills. Hydroelectric systems and dams Penstocks for hydroelectric installations are normally equipped with a gate system and a surge tank. They can be a combination of many components such as anchor block, drain valve, air bleed valve, and support piers depending on the application. Flow is regulated by turbine operation and is nil when turbines are not in service. Penstocks, particularly where used in polluted water systems, need to be maintained by hot water washing, manual cleaning, antifouling coatings, and desiccation. The term is also used in irrigation dams to refer to the channels leading to and from high-pressure sluice gates. Penstocks are also used in mine tailings dam construction. The penstock is usually situated fairly clos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reservoir
A reservoir (; from French ''réservoir'' ) is an enlarged lake behind a dam. Such a dam may be either artificial, built to store fresh water or it may be a natural formation. Reservoirs can be created in a number of ways, including controlling a watercourse that drains an existing body of water, interrupting a watercourse to form an embayment within it, through excavation, or building any number of retaining walls or levees. In other contexts, "reservoirs" may refer to storage spaces for various fluids; they may hold liquids or gasses, including hydrocarbons. ''Tank reservoirs'' store these in ground-level, elevated, or buried tanks. Tank reservoirs for water are also called cisterns. Most underground reservoirs are used to store liquids, principally either water or petroleum. Types Dammed valleys Dammed reservoirs are artificial lakes created and controlled by a dam constructed across a valley, and rely on the natural topography to provide most of the basin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nameplate Capacity
Nameplate capacity, also known as the rated capacity, nominal capacity, installed capacity, or maximum effect, is the intended full-load sustained output of a facility such as a power station,Energy glossary ''''. Retrieved: 23 September 2010.Glossary '' Nuclear Regulatory Commission'', 2 August 2010. Retrieved: 23 September 2010. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alusuisse
Alusuisse was a Swiss industrial group founded as ''Aluminium Industrie Aktien'' in 1898 in Zurich, Switzerland. The organisation was named ''Schweizerische Aluminium AG'' from 1963, ''Alusuisse-Lonza Holding AG'' from 1990, and ''Algroup'' from 1998. From the 1900s became a significant employer in the Valais canton through its aluminum production activities; a byproduct of the aluminium production process: fluorine became the subject of a pollution scandal ('' guerre du fluor'') after its public reporting in the 1970s. In the late 1960s the company also became involved in another contentious public issue through its joint venture Nabalco which was developing a bauxite deposit in northern Australia on land claimed by the indigenous people of that area; leading to the Gove land rights case. By the end of the twentieth century the company had become an international firm with interests in aluminium production, packaging, and chemicals (through the firm Lonza acquired 1974, dives ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Engineer
Engineers, as practitioners of engineering, are professionals who invent, design, analyze, build and test machines, complex systems, structures, gadgets and materials to fulfill functional objectives and requirements while considering the limitations imposed by practicality, regulation, safety and cost. "Science is knowledge based on our observed facts and tested truths arranged in an orderly system that can be validated and communicated to other people. Engineering is the creative application of scientific principles used to plan, build, direct, guide, manage, or work on systems to maintain and improve our daily lives." The word ''engineer'' (Latin ) is derived from the Latin words ("to contrive, devise") and ("cleverness"). The foundational qualifications of an engineer typically include a four-year Bachelor of Engineering, bachelor's degree in an engineering discipline, or in some jurisdictions, a Master of Engineering, master's degree in an engineering discipline plus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hafnarfjörður
Hafnarfjörður (), officially Hafnarfjarðarkaupstaður (), is a port town and municipality in Iceland, located about south of Reykjavík. The municipality consists of two non-contiguous areas in the Capital Region, on the southwest coast of the country. At about 30,000 inhabitants, Hafnarfjörður is the third-most populous city in Iceland after Reykjavík and Kópavogur. It has established local industry and a variety of urban activities, with annual festival events. Activities The town is the site of an annual Viking festival, where Viking culture enthusiasts from around the world display reconstructions of Viking garb, handicraft, sword-fighting and longbow shooting. It takes place in June each summer. Local industry Just two kilometres () outside of Hafnarfjörður is an aluminium smelter, run by Alcan. The smelter was originally built in 1969, and it has improved its cleaning process since then, especially regarding fluoride. Local elections were held in May 2006, whe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Run-of-the-river Hydroelectricity
Run-of-river hydroelectricity (ROR) or run-of-the-river hydroelectricity is a type of hydroelectric generation plant whereby little or no water storage is provided. Run-of-the-river power plants may have no water storage at all or a limited amount of storage, in which case the storage reservoir is referred to as pondage. A plant without pondage is subject to seasonal river flows, thus the plant will operate as an intermittent energy source. Conventional hydro uses reservoirs, which regulate water for flood control, dispatchable electrical power, and the provision of fresh water for agriculture. Concept Run-of-the-river, or ROR, hydroelectricity is considered ideal for streams or rivers that can sustain a minimum flow or those regulated by a lake or reservoir upstream. A small dam is usually built to create a headpond ensuring that there is enough water entering the penstock pipes that lead to the turbines, which are at a lower elevation. Projects with pondage, as opposed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
