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Dalešice Hydro Power Plant
Dalešice Hydro Power Plant () is a power plant on the Jihlava (river), Jihlava River in the Czech Republic. It has four Francis turbines with a nominal capacity of each and a total capacity of . The old turbines before the 1999–2007 reconstruction had a capacity of each. The plant includes the lower Dalešice-Mohelno Reservoir of the Dalešice-Mohelno pump-dam complex. Dalešice Reservoir Dalešice Reservoir lies in Třebíč District in the Czech Republic and is named after the market town of Dalešice (Třebíč District), Dalešice. It was built between 1970 and 1978 together with the Mohelno Reservoir as a water source for the nearby Dukovany Nuclear Power Station. As it has the fastest-starting turbines of all dams in the Czech Republic (less than 1 minute to full power) it also acts as emergency source in case some of the reactors in Dukovany shut down (for that reason it was also initially equipped with total capacity of 450 MW to back-up one of the four 440MWe VVER, VV ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Třebíč District
Třebíč District () is a district in the Vysočina Region of the Czech Republic. Its capital is the town of Třebíč. Administrative division Třebíč District is divided into three administrative districts of municipalities with extended competence: Třebíč, Moravské Budějovice and Náměšť nad Oslavou. List of municipalities Towns are marked in bold and market towns in ''italics'': Babice – Bačice – Bačkovice – Benetice – Biskupice-Pulkov – Blatnice – Bochovice – Bohušice – Bransouze – Březník – '' Budišov'' – Budkov – Čáslavice – Častohostice – Čechočovice – Čechtín – Červená Lhota – Chlístov – Chlum – Chotěbudice – Číchov – Cidlina – Číhalín – Čikov – Číměř – '' Dalešice'' – Dědice – Dešov – Dolní Lažany – Dolní Vilémovice – Domamil – Dukovany – Hartvíkovice – '' Heraltice'' – Hluboké – Hodov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reservoir
A reservoir (; ) is an enlarged lake behind a dam, usually built to water storage, store fresh water, often doubling for hydroelectric power generation. Reservoirs are created by controlling a watercourse that drains an existing body of water, interrupting a watercourse to form an Bay, embayment within it, excavating, or building any number of retaining walls or levees to enclose any area to store water. 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 of the reservoir. These reservoirs can either be ''on-stream reservoirs'', which are located on the original streambed of the downstream river and are filled by stream, creeks, rivers or rainwater that surface runoff, runs off the surrounding forested catchments, or ''off-stream reservoirs'', which receive water diversion, diverted water from a nearby stream or aqueduct (water supply), aq ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jihlava (river)
The Jihlava (; ) is a river in the Czech Republic, a right tributary of the Svratka (river), Svratka River. It flows through the Vysočina Region, Vysočina and South Moravian Region, South Moravian regions. It is long, making it the List of rivers of the Czech Republic, 8th longest river in the Czech Republic. Etymology The first written mention of Jihlava (written as ''Giglaue'') is from 1226, when it was referred to when demarcating the boundaries of the properties of the Želiv monastery. The origin of the name is often interpreted as coming from the German ''igel'' (i.e. 'hedgehog'), but a more likely origin is the Celtic word ''uig'', meaning 'stream'. Characteristic The Jihlava originates in the territory of Jihlávka in the Křemešník Highlands at an elevation of and flows to the Nové Mlýny reservoirs, where it enters the Svratka River in Ivaň (Brno-Country District), Ivaň at the elevation of . It is long, making it the List of rivers of the Czech Republic, 8th lo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Czech Republic
The Czech Republic, also known as Czechia, and historically known as Bohemia, is a landlocked country in Central Europe. The country is bordered by Austria to the south, Germany to the west, Poland to the northeast, and Slovakia to the southeast. The Czech Republic has a hilly landscape that covers an area of with a mostly temperate Humid continental climate, continental and oceanic climate. The capital and largest city is Prague; other major cities and urban areas include Brno, Ostrava, Plzeň and Liberec. The Duchy of Bohemia was founded in the late 9th century under Great Moravia. It was formally recognized as an Imperial Estate of the Holy Roman Empire in 1002 and became Kingdom of Bohemia, a kingdom in 1198. Following the Battle of Mohács in 1526, all of the Lands of the Bohemian Crown were gradually integrated into the Habsburg monarchy. Nearly a hundred years later, the Protestantism, Protestant Bohemian Revolt led to the Thirty Years' War. After the Battle of White ... [...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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dalešice (Třebíč District)
Dalešice is a market town in Třebíč District in the Vysočina Region of the Czech Republic. It has about 600 inhabitants. Geography Dalešice is located about southeast of Třebíč and west of Brno. It lies in the Jevišovice Uplands. The highest point is at above sea level. Dalešice gave its name to the Dalešice Reservoir. Part of the reservoir forms the eastern border of the municipality. History The first written mention of Dalešice is from 1101, when Duke Litolt donated the village to the newly established Benedictine monastery in Třebíč. Demographics Economy Dalešice is known for the Dalešice Brewery. The tradition of brewing beer dates back to the 17th century. Transport There are no railways or major roads passing through the municipality. Sights The Church of Saints Peter and Paul is a Romanesque-Gothic building from the 12th century. Next to the church is a one-storey Baroque castle with valuable sculptural decoration. It includes the adjacent castl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dukovany Nuclear Power Station
The Dukovany Nuclear Power Station () is a nuclear power plant near Dukovany in the Czech Republic. It was the second nuclear power plant in Czechoslovakia (the Bohunice Nuclear Power Plant in what is now Slovakia was constructed in 1958), and the first one in what is now the Czech Republic. It is situated from the town of Třebíč, near the Dalešice Reservoir, where the plant sources its water supply. In 1970 Czechoslovakia and the Soviet Union ratified a contract for construction of two nuclear power plants. Actual construction work began four years later. From 1985 to 1987, four power units with pressurized water reactors were commissioned. All four are still in operation. Dukovany nuclear power plant supplies approximately 14 TWh of electric energy annually to the national power network. The plant is owned and operated by ČEZ Group. The power plant modernisation will successively be carried out to the end of its planned service life. Plant characteristics The plant has f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
VVER
The water-water energetic reactor (WWER), or VVER (from ) is a series of pressurized water reactor designs originally developed in the Soviet Union, and now Russia, by OKB Gidropress. The idea of such a reactor was proposed at the Kurchatov Institute by Savely Moiseevich Feinberg. VVER were originally developed before the 1970s, and have been continually updated. They were one of the initial reactors developed by the USSR, the other being the infamous RBMK. As a result, the name VVER is associated with a wide variety of reactor designs spanning from generation I reactors to modern generation III+ reactor designs. Power output ranges from 70 to 1300 MWe, with designs of up to 1700 MWe in development. The first prototype VVER-210 was built at the Novovoronezh Nuclear Power Plant. VVER power stations have been installed in Russia, Ukraine, Belarus, Armenia, China, the Czech Republic, Finland, Hungary, Slovakia, Bulgaria, India, and Iran. Countries that are planning to introduce VVER r ... [...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. 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. Stability of the dam primarily arises from the range of normal force angles viably generated by the foundation. Also, the stiff nature of a gravity dam structure endures differential foundation settlement poorly, as it can crack the dam structure. The main advantage to gravity dams over embankments is the scour-resistance of concrete, which protects against damage from minor over-topping flows. Unexpected large over-topping flows are still a problem, as they can scour dam foundations. A disadvantage of gra ... [...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 Brno, Austria-Hungary (now in the Czech Republic), obtained his first patent for an adjustable blade propeller turbine in 19 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Energy Infrastructure Completed In 1978
Energy () is the quantitative property that is transferred to a body or to a physical system, recognizable in the performance of work and in the form of heat and light. Energy is a conserved quantity—the law of conservation of energy states that energy can be converted in form, but not created or destroyed. The unit of measurement for energy in the International System of Units (SI) is the joule (J). Forms of energy include the kinetic energy of a moving object, the potential energy stored by an object (for instance due to its position in a field), the elastic energy stored in a solid object, chemical energy associated with chemical reactions, the radiant energy carried by electromagnetic radiation, the internal energy contained within a thermodynamic system, and rest energy associated with an object's rest mass. These are not mutually exclusive. All living organisms constantly take in and release energy. The Earth's climate and ecosystems processes are driven primari ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pumped-storage Hydroelectric Power Stations In The Czech Republic
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. A PSH system 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. Pumped-storage hydroelectricity allows energy from intermittent sources (such as solar, wind, and other renewables) or excess electricity from continuous base-load sources (such as coal or nuclear) to be saved for periods of higher demand. The reservoirs used with pumped storage can be quite small, when contrasted with the lakes of conventional hydroelectric plants of similar power capacity, and generating periods are often less than half a day. The round-trip efficie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
