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Vamma Hydroelectric Power Station
Vamma Power Station (''Vamma kraftstasjon'') is a hydroelectric power station located on the river Glomma approximately 4.5 km south of Askim, Østfold, Norway. Sam Eyde formed Vamma Fossekompagnie in 1902 to build a power plant for a fertilizer factory. The factory plans were canceled in 1912 and Vamma Fossekompagnie was sold to Hafslund (company). Construction of the power station started in 1907 and in 1915 the first two turbines were completed. Another six turbines were built between 1915 and 1927. In 1944 the final two were complete. The installed capacity at that point was from ten horizontal Francis turbines with dual runners. Between 1967 and 1971 a Kaplan turbine was built, adding another , and it now operates at an installed capacity of , with an average annual production of 1,275 GWh. In 2015 the construction of a twelfth turbine began on the south side of the dam. This is also a Kaplan turbine rated at . The new turbine will allow the ten old turbines to only ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Østfold
Østfold is a traditional region, a former county and a current electoral district in southeastern Norway. It borders Akershus and southwestern Sweden (Västra Götaland County and Värmland), while Buskerud and Vestfold are on the other side of Oslofjord. The county's administrative seat was Sarpsborg. The county controversially became part of the newly established Viken County on 1 January 2020. Many manufacturing facilities are situated here, such as the world's most advanced biorefinery, Borregaard in Sarpsborg. Fredrikstad has shipyards. There are granite mines in Østfold and stone from these were used by Gustav Vigeland. The county slogan is "The heartland of Scandinavia". The local dialects are characterized by their geographical proximity to Sweden. The name The old name of the Oslofjord was ''Fold''; ''Østfold'' means 'the region east of the Fold' (see also Vestfold). The name was first recorded in 1543; in the Middle Ages the name of the county was ''Borgarsysla'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hafslund (company)
Hafslund AS is a group with ownership within the power industry. The group is fully owned by Oslo municipality. Hafslund's core business streams are hydropower, with 56 percent ownership in Norway's second largest hydropower company Hafslund Eco AS, and district heating, as majority shareholder (60 percent) in Norway's largest district heating company Hafslund Oslo Celsio AS. The group also owns 50 percent of Eidsiva Energi and thereby 50 percent of Norway's grid company Elvia, as well as broadband and bio heat. Hafslund AS also owns 49 percent of Fredrikstad Energi AS. The group has also ownership in Hafslund New Energy with operations within electrification and Hafslund is one of three partners in the offshore wind partnership Blåvinge together with Fred. Olsen Renewables and Ørsted. Hafslund headquarter is located at Skøyen in Oslo and the group has 655 employees as per June 2022. Business areas Hydropower Hafslund's hydropower company, Hafslund Eco, owns, operates and m ... [...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 to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Erna Solberg
Erna Solberg (; born 24 February 1961) is a Norwegian politician and the current Leader of the Opposition. She served as the 35th prime minister of Norway from 2013 to 2021, and has been Leader of the Conservative Party since May 2004. Solberg was first elected to the Storting in 1989, and served as Minister of Local Government and Regional Development in Bondevik's Second Cabinet from 2001 to 2005. During her tenure, she oversaw the tightening of immigration policy and the preparation of a proposed reform of the administrative divisions of Norway. After the 2005 election, she chaired the Conservative Party parliamentary group until 2013. Solberg has emphasized the social and ideological basis of Conservative policies, though the party also has become visibly more pragmatic. After winning the September 2013 election, Solberg became prime minister of Norway, the second woman to hold the position, after Gro Harlem Brundtland. Solberg's Cabinet, often informally called the "Blue-Bl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Store Norske Leksikon
The ''Great Norwegian Encyclopedia'' ( no, Store Norske Leksikon, abbreviated ''SNL''), is a Norwegian-language online encyclopedia. The online encyclopedia is among the most-read Norwegian published sites, with more than two million unique visitors per month. Paper editions 1978–2007 The ''SNL'' was created in 1978, when the two publishing houses Aschehoug and Gyldendal merged their encyclopedias and created the company Kunnskapsforlaget. Up until 1978 the two publishing houses of Aschehoug and Gyldendal, Norway's two largest, had published ' and ', respectively. The respective first editions were published in 1907–1913 (Aschehoug) and 1933–1934 (Gyldendal). The slump in sales for paper-based encyclopedias around the turn of the 21st century hit Kunnskapsforlaget hard, but a fourth edition of the paper encyclopedia was secured by a grant of ten million Norwegian kroner from the foundation Fritt Ord in 2003. The fourth edition consisted of 16 volumes, a t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kaplan Turbine
The Kaplan turbine is a propeller-type water turbine which has adjustable blades. It was developed in 1913 by Austrian professor Viktor Kaplan, who combined automatically adjusted propeller blades with automatically adjusted wicket gates to achieve efficiency over a wide range of flow and water level. The Kaplan turbine was an evolution of the Francis turbine. Its invention allowed efficient power production in low-head applications which was not possible with Francis turbines. The head ranges from and the output ranges from 5 to 200 MW. Runner diameters are between . Turbines rotate at a constant rate, which varies from facility to facility. That rate ranges from as low as 54.5 rpm (Albeni Falls Dam) to 450 rpm. Kaplan turbines are now widely used throughout the world in high-flow, low-head power production. Development Viktor Kaplan, living in Brünn, Austria-Hungary (now Brno, Czechia), obtained his first patent for an adjustable blade propeller turbine in 1912. But t ... [...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 and 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 head height is between . Penstock diameters are between . The speeds of different turbine units range from 70 to 1000 rpm. A wicket gate around the outside of the turbine's rotating runner controls the rate of water flow through the turbine for d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Megawatt
The watt (symbol: W) is the unit of Power (physics), power or radiant flux in the International System of Units, International System of Units (SI), equal to 1 joule per second or 1 kg⋅m2⋅s−3. It is used to quantification (science), quantify the rate of Energy transformation, energy transfer. The watt is named after James Watt (1736–1819), an 18th-century Scottish people, Scottish invention, inventor, mechanical engineer, and chemist who improved the Newcomen steam engine, Newcomen engine with his own Watt steam engine, steam engine in 1776. Watt's invention was fundamental for the Industrial Revolution. Overview When an object's velocity is held constant at one metre per second against a constant opposing force of one Newton (unit), newton, the rate at which Work (physics), work is done is one watt. : \mathrm In terms of electromagnetism, one watt is the rate at which electrical work is performed when a current of one ampere (A) flows across an electrical potentia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sam Eyde
Samuel Eyde (29 October 1866 – 21 June 1940) was a Norwegian engineer and industrialist. He was the founder of both Norsk Hydro and Elkem. Personal life Eyde was born in Arendal in Aust-Agder, Norway. He was a son of ship-owner Samuel Eyde (1819–1902) and his wife Elina Christine Amalie Stephansen (1829–1906). He was a first cousin of Alf Scott-Hansen on the maternal side. In August 1895 he married Countess Ulla Mörner (1873–1961), but the marriage was dissolved in 1912. In February 1913 he married actress Elly Simonsen (1885–1960). Career Eyde studied engineering in Berlin where he graduated in 1891. He started his career in Hamburg, working with the railways where he planned new lines, bridges and stations. In 1897 he started the engineering firm Gleim & Eyde with his previous boss from Hamburg. He soon established offices in Kristiania (now Oslo) and Stockholm. By the turn of the century the firm was one of the largest in Scandinavia, with some 30 engineers. In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hafslund E-CO
Hafslund is a borough located east of the city centre in the city of Sarpsborg, Norway, Before 1992, Hafslund was a part of Skjeberg municipality. The name Hafslund, which is composed of ''Hafr'', the Old Norse name for husband and ''lundr'' meaning grove. There has been a permanent settlement at Hafslund for over 5000 years. Hafslund Manor Hafslund Manor (''Hafslund Hovedgård'') is an estate located just outside Hafslund. At various times, it was owned by the Østby family and, later, the industrialist and timber merchant Benjamin Wegner and by Maren Juel who regarded during her lifetime as the wealthiest woman in Norway. The property is now approximately 6,000 acres, of which approximately a quarter of the acreage is forested. About 2,000 acres leased for residential and industrial land. The first public record of Hafslund dates to 1344, at which time the farm was crown property. Hafslund Manor dates from 1761. The manor house is located at the old Sandesund ferry site. It ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Norway
Norway, officially the Kingdom of Norway, is a Nordic country in Northern Europe, the mainland territory of which comprises the western and northernmost portion of the Scandinavian Peninsula. The remote Arctic island of Jan Mayen and the archipelago of Svalbard also form part of Norway. Bouvet Island, located in the Subantarctic, is a dependency of Norway; it also lays claims to the Antarctic territories of Peter I Island and Queen Maud Land. The capital and largest city in Norway is Oslo. Norway has a total area of and had a population of 5,425,270 in January 2022. The country shares a long eastern border with Sweden at a length of . It is bordered by Finland and Russia to the northeast and the Skagerrak strait to the south, on the other side of which are Denmark and the United Kingdom. Norway has an extensive coastline, facing the North Atlantic Ocean and the Barents Sea. The maritime influence dominates Norway's climate, with mild lowland temperatures on the se ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Askim
Askim () is a town and a former municipality in (from January 1, 2020) Indre Østfold Kommune in the former county of Østfold county (from January 1, 2020 a part of Viken county), Norway. The administrative centre of the Askim municipality was the town of Askim. Askim was established as a municipality on 1 January 1838 (see formannskapsdistrikt). Askim is the largest population centre in the Indre Østfold region, with 15,315 inhabitants as of 2012, and serves as a regional center for nine municipalities in the Indre Østfold region. It lies next to the longest river in Norway, Glomma, which forms the border with the former Spydeberg municipality to the north and west, and Skiptvet municipality to the south. Askim also borders to the former Trøgstad municipality to the northeast and the former Eidsberg municipality to the southeast. Askim produces large amounts of hydroelectricity at three dams / hydroelectric power plants in the river Glomma. From upstream to downstream: ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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