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Ringedals Dam
Ringedals Dam is a gravity dam by Ringedalsvatnet at Tyssedal in Odda municipality in the county of Hordaland, Norway. The dam was built in stages between 1909 and 1918 in connection with the hydroelectric power plant in Tyssedal and the factories in Odda. When the dam was completed in 1918 it was one of Europe’s largest gravity dams with a reservoir capacity of 222 million m3. The dam is built in Cyclopean concrete with 30% large-sized stones (plums) and dressed on both sides with approximately 20,000 m² of hand-cut granite stone, the largest of its kind in Norway. The dam is crowned by the date and initials of managing director Ragnvald Blakstad and topped with merlons in Neo-Romanesque style. Ringedalsvatnet is today the reservoir of Oksla Hydroelectric Power Plant at Sørfjorden. The reservoir has a capacity of 426 million m³ and the power station is every year producing approximately 900 GWh. History Transfer tunnels In the bedrock under the Ri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ringedalsvatnet
Ringedalsvatnet is a lake in Ullensvang Municipality in Vestland county, Norway. The lake sits just east of the village of Skjeggedal and about east (up the valley) from the village of Tyssedal, which sits on the shore of the Sørfjorden. The lake is the main reservoir for a hydroelectric power station in Tyssedal which provides electricity for the power intensive industries in the nearby town of Odda. The wide and high Ringedals Dam was constructed from 1910–1918. Due to the extensive regulation of the nearby lakes such as Langavatnet and Nybuvatnet in the mountains above this lake, several of the large waterfalls that once fed Ringedalsvatnet are no longer regularly flowing. The Tyssestrengene and Ringedalsfossen waterfalls were once very notable waterfalls on the cliffs surrounding this lake. The Trolltunga cliff overlooks this lake too, attracting many tourists and hikers each year. File:Ringedalsvatnet from Ringedalsdammen.jpg, View of the lake, from the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Butterfly Valve
A butterfly valve is a valve that isolates or regulates the flow of a fluid. The closing mechanism is a disk that rotates. Principle of operation Operation is similar to that of a ball valve, which allows for quick shut off. Butterfly valves are generally favored because they cost less than other valve designs, and are lighter weight so they need less support. The disc is positioned in the center of the pipe. A rod passes through the disc to an actuator on the outside of the valve. Rotating the actuator turns the disc either parallel or perpendicular to the flow. Unlike a ball valve, the disc is always present within the flow, so it induces a pressure drop, even when open. A butterfly valve is from a family of valves called quarter-turn valves. In operation, the valve is fully open or closed when the disc is rotated a quarter turn. The "butterfly" is a metal disc mounted on a rod. When the valve is closed, the disc is turned so that it completely blocks off the passageway. Wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asphalt Concrete
Asphalt concrete (commonly called asphalt, blacktop, or pavement in North America, and tarmac, bitumen macadam, or rolled asphalt in the United Kingdom and the Republic of Ireland) is a composite material commonly used to surface roads, parking lots, airports, and the core of embankment dams. Asphalt mixtures have been used in pavement construction since the beginning of the twentieth century. It consists of mineral aggregate bound together with asphalt, laid in layers, and compacted. The process was refined and enhanced by Belgian-American inventor Edward De Smedt. The terms ''asphalt'' (or ''asphaltic'') ''concrete'', ''bituminous asphalt concrete'', and ''bituminous mixture'' are typically used only in engineering and construction documents, which define concrete as any composite material composed of mineral aggregate adhered with a binder. The abbreviation, ''AC'', is sometimes used for ''asphalt concrete'' but can also denote ''asphalt content'' or ''asphalt cement'', ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bitumen
Asphalt, also known as bitumen (, ), is a sticky, black, highly viscous liquid or semi-solid form of petroleum. It may be found in natural deposits or may be a refined product, and is classed as a pitch. Before the 20th century, the term asphaltum was also used. Full text at Internet Archive (archive.org) The word is derived from the Ancient Greek ἄσφαλτος ''ásphaltos''. The largest natural deposit of asphalt in the world, estimated to contain 10 million tons, is the Pitch Lake located in La Brea in southwest Trinidad (Antilles island located on the northeastern coast of Venezuela), within the Siparia Regional Corporation. The primary use (70%) of asphalt is in road construction, where it is used as the glue or binder mixed with aggregate particles to create asphalt concrete. Its other main uses are for bituminous waterproofing products, including production of roofing felt and for sealing flat roofs. In material sciences and engineering, the terms "asphalt" an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AS Høyer-Ellefsen
As, AS, A. S., A/S or similar may refer to: Art, entertainment, and media * A. S. Byatt (born 1936), English critic, novelist, poet and short story writer * "As" (song), by Stevie Wonder * , a Spanish sports newspaper * , an academic male voice choir of Helsinki, Finland * Adult Swim, a programming block on Cartoon Network Business legal structures * , a Czech form of joint-stock company * , a Slovak form of joint-stock company * or ''A/S'', a type of Danish stock-based company * or ''AS'', a type of Norwegian stock-based company Businesses and organizations * A.S. Roma, an Italian football club * Alaska Airlines, IATA airline designator * (Belgium), a World War II resistance organization * ''Diario AS'', a Spanish daily sports newspaper that concentrates particularly on football - branded as AS * KK AS Basket, a Serbian basketball club * , a French resistance organization * Oakland Athletics, an American baseball team referred to as the A's * Australian Standards, a s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pumped-storage Hydroelectricity
Pumped-storage hydroelectricity (PSH), or pumped hydroelectric energy storage (PHES), is a type of hydroelectric energy storage used by electric power systems for load balancing. The method stores energy in the form of gravitational potential energy of water, pumped from a lower elevation reservoir to a higher elevation. Low-cost surplus off-peak electric power is typically used to run the pumps. During periods of high electrical demand, the stored water is released through turbines to produce electric power. Although the losses of the pumping process make the plant a net consumer of energy overall, the system increases revenue by selling more electricity during periods of peak demand, when electricity prices are highest. If the upper lake collects significant rainfall or is fed by a river then the plant may be a net energy producer in the manner of a traditional hydroelectric plant. Pumped-storage hydroelectricity allows energy from intermittent sources (such as solar, wind ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Skjeggedal, Hordaland
Skjeggedal is a small village in the municipality of Ullensvang in Vestland county, Norway. The village lies on the northern shore of the lake Vetlevatnet, about northeast of the village of Tyssedal and about northwest of the town of Odda. The village is mostly made up of holiday cottages and a large hydroelectric power station near the large Ringedals Dam on the lake Ringedalsvatnet Ringedalsvatnet is a lake in Ullensvang Municipality in Vestland county, Norway. The lake sits just east of the village of Skjeggedal and about east (up the valley) from the village of Tyssedal, which sits on the shore of the Sørfjorden. Th .... Media gallery Skjeggedal kraftstasjon.jpg, Skjeggedal power station Ventilhus Schultstunnel Ringedalsdammen.jpg, Ventilhus Schultstunnel Ringedalsdammen Odda Skjeggedal - NB MS G4 0060.jpg, Skjeggedal (c. 1900) Mågelibanen.JPG, Mågeli railway leading up the mountain Ringedalsdammen, Skjeggedal, Norway.jpg, Ringedals Dam at Skjeggedal Referenc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neo-Romanesque
Romanesque Revival (or Neo-Romanesque) is a style of building employed beginning in the mid-19th century inspired by the 11th- and 12th-century Romanesque architecture. Unlike the historic Romanesque style, Romanesque Revival buildings tended to feature more simplified arches and windows than their historic counterparts. An early variety of Romanesque Revival style known as Rundbogenstil ("Round-arched style") was popular in German lands and in the German diaspora beginning in the 1830s. By far the most prominent and influential American architect working in a free "Romanesque" manner was Henry Hobson Richardson. In the United States, the style derived from examples set by him are termed Richardsonian Romanesque, of which not all are Romanesque Revival. Romanesque Revival is also sometimes referred to as the " Norman style" or " Lombard style", particularly in works published during the 19th century after variations of historic Romanesque that were developed by the Normans in Eng ... [...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] |
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