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Carrigadrohid Hydroelectric Power Station
Carrigadrohid hydroelectric power station is a hydroelectric plant located on the River Lee in County Cork, Ireland. It is owned and operated by the ESB Group. The dam is long and has a single Kaplan turbine which produces an average of each year. Built between 1952 and 1957. the construction of Carrigadrohid required the destruction of over half of the Gearagh, an ancient alluvial forest, and initially harmed local wildlife. However, subsequently the area has seen the growth of an ecosystem with kingfishers, otters, salmon and swans, which has been designated European Union Special Area of Conservation. Construction The Carrigadrohid hydroelectric plant, along with its sister plant constructed downstream on the River Lee at Inniscarra, formed the fourth major hydroelectric development undertaken by ESB. Construction of the reinforced concrete gravity dam started in 1952 and was complete in 1957. The dam is long and high, and operates with an average head of . It is construct ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ESB Group
The Electricity Supply Board (ESB; ga, Bord Soláthair an Leictreachais) is a state owned (95%; the rest are owned by employees) electricity company operating in the Republic of Ireland. While historically a monopoly, the ESB now operates as a commercial semi-state concern in a "liberalised" and competitive market. It is a statutory corporation whose members are appointed by the Government of Ireland. Business areas The ESB is composed of several distinct, separate and legally demarcated companies. By business area, the principal companies are: ''ESB Networks Limited'' manages construction and maintenance of the electricity transmission system. (The transmission system operator is an independent state company, EirGrid). ''ESB Generation and Wholesale Markets (ESB GWM)'' operates a portfolio of power stations across the country, along with holdings in wind and other renewables. ''Electric Ireland'' is a regulated supply company, one of fourteen companies (as of 10 October 2 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inniscarra Dam
Inniscarra Dam is a buttress dam located on the River Lee in the civil parish of Inniscarra in County Cork, Ireland. Construction of the dam started in February 1953 and resulted in the formation of the Inniscarra Reservoir. The dam is owned and operated by the ESB Group and has a generation capacity of 19 MW. It over-flooded in November 2009 and caused around 100 million euros worth of damage to the city, with University College Cork University College Cork – National University of Ireland, Cork (UCC) ( ga, Coláiste na hOllscoile Corcaigh) is a constituent university of the National University of Ireland, and located in Cork. The university was founded in 1845 as one of ... saying it damaged 20 million euros worth of property. References {{Electricity generation in Ireland Dams in the Republic of Ireland Hydroelectric power stations in the Republic of Ireland Buttress dams Dams completed in 1957 River Lee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydroelectric Power Stations In The Republic Of Ireland
Hydroelectricity, or hydroelectric power, is electricity generated from hydropower (water power). Hydropower supplies one sixth of the world's electricity, almost 4500 TWh in 2020, 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] |
Freshwater Pearl Mussel
The freshwater pearl mussel (''Margaritifera margaritifera'') is an endangered species of freshwater mussel, an aquatic bivalve mollusc in the family Margaritiferidae. Although the name "freshwater pearl mussel" is often used for this species, other freshwater mussel species (e.g. ''Margaritifera auricularia'') can also create pearls and some can also be used as a source of mother of pearl. Most cultured pearls today come from ''Hyriopsis'' species in Asia, or ''Amblema'' species in North America, both members of the related family Unionidae; pearls are also found within species in the genus ''Unio''. The interior of the shell of ''Margaritifera margaritifera'' has thick nacre (the inner mother of pearl layer of the shell). This species is capable of making fine-quality pearls, and was historically exploited in the search for pearls from wild sources. In recent times, the Russian malacologist Valeriy Zyuganov received worldwide reputation after he discovered that the pearl m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Otter
Otters are carnivorous mammals in the subfamily Lutrinae. The 13 extant otter species are all semiaquatic, aquatic, or marine, with diets based on fish and invertebrates. Lutrinae is a branch of the Mustelidae family, which also includes weasels, badgers, mink, and wolverines, among other animals. Etymology The word ''otter'' derives from the Old English word or . This, and cognate words in other Indo-European languages, ultimately stem from the Proto-Indo-European language root , which also gave rise to the English word "water". Terminology An otter's den is called a holt or couch. Male otters are called dogs or boars, females are called bitches or sows, and their offspring are called pups or cubs. The collective nouns for otters are bevy, family, lodge, romp (being descriptive of their often playful nature) or, when in water, raft. The feces of otters are typically identified by their distinctive aroma, the smell of which has been described as ranging from freshly ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trout
Trout are species of freshwater fish belonging to the genera '' Oncorhynchus'', ''Salmo'' and ''Salvelinus'', all of the subfamily Salmoninae of the family Salmonidae. The word ''trout'' is also used as part of the name of some non-salmonid fish such as ''Cynoscion nebulosus'', the spotted seatrout or speckled trout. Trout are closely related to salmon and char (or charr): species termed salmon and char occur in the same genera as do fish called trout (''Oncorhynchus'' – Pacific salmon and trout, ''Salmo'' – Atlantic salmon and various trout, ''Salvelinus'' – char and trout). Lake trout and most other trout live in freshwater lakes and rivers exclusively, while there are others, such as the steelhead, a form of the coastal rainbow trout, that can spend two or three years at sea before returning to fresh water to spawn (a habit more typical of salmon). Arctic char and brook trout are part of the char genus. Trout are an important food source for humans and wildlife, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cork (city)
Cork ( , from , meaning 'marsh') is the second largest city in Ireland and third largest city by population on the island of Ireland. It is located in the south-west of Ireland, in the province of Munster. Following an extension to the city's boundary in 2019, its population is over 222,000. The city centre is an island positioned between two channels of the River Lee which meet downstream at the eastern end of the city centre, where the quays and docks along the river lead outwards towards Lough Mahon and Cork Harbour, one of the largest natural harbours in the world. Originally a monastic settlement, Cork was expanded by Viking invaders around 915. Its charter was granted by Prince John in 1185. Cork city was once fully walled, and the remnants of the old medieval town centre can be found around South and North Main streets. The city's cognomen of "the rebel city" originates in its support for the Yorkist cause in the Wars of the Roses. Corkonians sometimes refer to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siemens
Siemens AG ( ) is a German multinational conglomerate corporation and the largest industrial manufacturing company in Europe headquartered in Munich with branch offices abroad. The principal divisions of the corporation are ''Industry'', ''Energy'', ''Healthcare'' (Siemens Healthineers), and ''Infrastructure & Cities'', which represent the main activities of the corporation. The corporation is a prominent maker of medical diagnostics equipment and its medical health-care division, which generates about 12 percent of the corporation's total sales, is its second-most profitable unit, after the industrial automation division. In this area, it is regarded as a pioneer and the company with the highest revenue in the world. The corporation is a component of the Euro Stoxx 50 stock market index. Siemens and its subsidiaries employ approximately 303,000 people worldwide and reported global revenue of around €62 billion in 2021 according to its earnings release. History 1847 to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Voith
The Voith Group is a German manufacturer of machines for the pulp and paper industry, technical equipment for hydropower plants and drive and braking systems. The family-owned company, which operates worldwide and has its headquarters in Heidenheim an der Brenz, was founded in 1867. Company history Laying the foundations for industrial paper production In 1825, Johann Matthäus Voith took over his father's locksmith's workshop in Heidenheim with five employees, mainly carrying out repairs to water wheels and paper mills. Around 1830 in Heidenheim, there were about 600 people working in 15 factories, mostly textile factories that had been established by wealthy merchants and publishers. The necessary maintenance and repair of the expensive machinery offered a source of income to several workshops, particularly the locksmiths and metalworkers in what was still a small town at the time. In 1830, Johann Matthäus Voith and his workshop were involved in the construction of a pap ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spillway
A spillway is a structure used to provide the controlled release of water downstream from a dam or levee, typically into the riverbed of the dammed river itself. In the United Kingdom, they may be known as overflow channels. Spillways ensure that water does not damage parts of the structure not designed to convey water. Spillways can include floodgates and fuse plugs to regulate water flow and reservoir level. Such features enable a spillway to regulate downstream flow—by releasing water in a controlled manner before the reservoir is full, operators can prevent an unacceptably large release later. Other uses of the term "spillway" include bypasses of dams and outlets of channels used during high water, and outlet channels carved through natural dams such as moraines. Water normally flows over a spillway only during flood periods, when the reservoir has reached its capacity and water continues entering faster than it can be released. In contrast, an intake tower is a structure ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gravity Dam
A gravity dam is a dam constructed from concrete or stone masonry and designed to hold back water by using only the weight of the material and its resistance against the foundation to oppose the horizontal pressure of water pushing against it. Gravity dams are designed so that each section of the dam is stable and independent of any other dam section. Characteristics Gravity dams generally require stiff rock foundations of high bearing strength (slightly weathered to fresh), although in rare cases, they have been built on soil foundations. The bearing strength of the foundation limits the allowable position of the resultant force, influencing the overall stability. Also, the stiff nature of the gravity dam structure is unforgiving to differential foundation settlement, which can induce cracking of the dam structure. Gravity dams provide some advantages over embankment dams, the main advantage being that they can tolerate minor over-topping flows without damage, as the concre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Special Area Of Conservation
A Special Area of Conservation (SAC) is defined in the European Union's Habitats Directive (92/43/EEC), also known as the ''Directive on the Conservation of Natural Habitats and of Wild Fauna and Flora''. They are to protect the 220 habitats and approximately 1,000 species listed in annex I and II of the directive which are considered to be of European interest following criteria given in the directive. They must be chosen from the Sites of Community Importance by the member states and designated SAC by an act assuring the conservation measures of the natural habitat. SACs complement Special Protection Areas and together form a network of protected sites across the European Union called Natura 2000. This, in turn, is part of the Emerald network of Areas of Special Conservation Interest (ASCIs) under the Berne Convention. Assessment methodology in the United Kingdom Prior to being designated as a Special Area of Conservation (SAC), sites have been assessed under a two-stage process ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
