|
Raiva Dam
Raiva Dam ( pt, Barragem da Raiva, links=no, also known as ''Barragem do Coiço'') is a concrete gravity dam on the Mondego. It is located in the municipality Penacova, in Coimbra District, Portugal. The dam was completed in 1981. It is owned by ''Companhia Portuguesa de Produção de Electricidade'' (CPPE). The dam is used for power generation and flood control. Dam Raiva Dam is a 36 m tall (height above foundation) and 200 m long gravity dam with a crest altitude of 64.5 m. The volume of the dam is 85,000 m³. The spillway with 2 radial gates is part of the dam body (maximum discharge 2,000 m³/s). There is also a bottom outlet. Reservoir At full reservoir level of 61.5 m the reservoir of the dam has a surface area of 2.3 km2 and a total capacity of 24.11 mio. m³. The active capacity is 14.71 (12) mio. m³. The reservoir of Raiva Dam serves as lower reservoir for the Aguieira pumped-storage power plant, which is located about 10 km upstream of Raiva dam. Power ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Portugal
Portugal, officially the Portuguese Republic, In recognized minority languages of Portugal: :* mwl, República Pertuesa is a country located on the Iberian Peninsula, in Southwestern Europe, and whose territory also includes the Macaronesian archipelagos of the Azores and Madeira. It features the westernmost point in continental Europe, its mainland west and south border with the North Atlantic Ocean and in the north and east, the Portugal-Spain border, constitutes the longest uninterrupted border-line in the European Union. Its archipelagos form two autonomous regions with their own regional governments. On the mainland, Alentejo region occupies the biggest area but is one of the least densely populated regions of Europe. Lisbon is the capital and largest city by population, being also the main spot for tourists alongside Porto, the Algarve and Madeira. One of the oldest countries in Europe, its territory has been continuously settled and fought over since prehistoric tim ... [...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] |
Energy Infrastructure Completed In 1981
In physics, energy (from Ancient Greek: ἐνέργεια, ''enérgeia'', “activity”) 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). Common 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, and the internal energy contained within a thermodynamic system. All living organisms constantly take in and release energy. Due to mass–energy equivalence, any object that has mass wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dams Completed In 1981
A dam is a barrier that stops or restricts the flow of surface water or underground streams. Reservoirs created by dams not only suppress floods but also provide water for activities such as irrigation, human consumption, industrial use, aquaculture, and navigability. Hydropower is often used in conjunction with dams to generate electricity. A dam can also be used to collect or store water which can be evenly distributed between locations. Dams generally serve the primary purpose of retaining water, while other structures such as floodgates or levees (also known as dikes) are used to manage or prevent water flow into specific land regions. The earliest known dam is the Jawa Dam in Jordan, dating to 3,000 BC. The word ''dam'' can be traced back to Middle English, and before that, from Middle Dutch, as seen in the names of many old cities, such as Amsterdam and Rotterdam. History Ancient dams Early dam building took place in Mesopotamia and the Middle East. Da ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gravity Dams
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 conc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydroelectric Power Stations In Portugal
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] |
Dams In Portugal
This page is a list of dams and reservoirs in Portugal, arranged by NUTS Regions and Subregions: Norte Alto Tâmega * Alto Tâmega Dam * Daivões Dam * Gouvães Dam Cávado * Caniçada Dam, Parada do Bouro, Vieira do Minho * Salamonde Dam, Salamonde, Vieira do Minho * Vilarinho das Furnas Dam, Campo do Gerês, Terras de Bouro Douro * Cuerda del Pozo Dam * Los Rábanos Dam * San José Dam * Villalcampo Dam * Castro Dam * Miranda Dam * Picote Dam * Bemposta Dam * Aldeadávila Dam * Saucelle Dam * Pocinho Dam * Valeira Dam São João da Pesqueira, São João da Pesqueira * Régua Dam * Carrapatelo Dam, Santa Cristina, Mesão Frio * Crestuma–Lever Dam * Bagaúste Dam, Peso da Régua, Peso da Régua Grande Porto * Crestuma–Lever Dam, Foz do Sousa, Gondomar Minho-Lima * Alto Lindoso Dam, Lindoso, Ponte da Barca Centro Beiras e Serra da Estrela * Sabugal Dam, Sabugal, Sabugal * Barragem Marques da Silva, Seia Beira Baixa * Cabril Dam, Sertã * Fratel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Dams And Reservoirs In Portugal
This page is a list of dams and reservoirs in Portugal, arranged by NUTS Regions and Subregions: Norte Alto Tâmega * Alto Tâmega Dam * Daivões Dam * Gouvães Dam Cávado * Caniçada Dam, Parada do Bouro, Vieira do Minho * Salamonde Dam, Salamonde, Vieira do Minho * Vilarinho das Furnas Dam, Campo do Gerês, Terras de Bouro Douro * Cuerda del Pozo Dam * Los Rábanos Dam * San José Dam * Villalcampo Dam * Castro Dam * Miranda Dam * Picote Dam * Bemposta Dam * Aldeadávila Dam * Saucelle Dam * Pocinho Dam * Valeira Dam São João da Pesqueira, São João da Pesqueira * Régua Dam * Carrapatelo Dam, Santa Cristina, Mesão Frio * Crestuma–Lever Dam * Bagaúste Dam, Peso da Régua, Peso da Régua Grande Porto * Crestuma–Lever Dam, Foz do Sousa, Gondomar Minho-Lima * Alto Lindoso Dam, Lindoso, Ponte da Barca Centro Beiras e Serra da Estrela * Sabugal Dam, Sabugal, Sabugal * Barragem Marques da Silva, Seia Beira Baixa * Cabril Dam, Sertã * Fratel Dam, Vila ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Power Stations In Portugal ...
The following page lists some power stations in Portugal. Cogeneration Geothermal Hydroelectric Thermal See also * List of power stations in Europe * List of largest power stations in the world References {{commons category, Power plants in Portugal Portugal Power stations A power station, also referred to as a power plant and sometimes generating station or generating plant, is an industrial facility for the generation of electric power. Power stations are generally connected to an electrical grid. Many po ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydraulic Head
Hydraulic head or piezometric head is a specific measurement of liquid pressure above a vertical datum., 410 pages. See pp. 43–44., 650 pages. See p. 22. It is usually measured as a liquid surface elevation, expressed in units of length, at the entrance (or bottom) of a piezometer. In an aquifer, it can be calculated from the depth to water in a piezometric well (a specialized water well), and given information of the piezometer's elevation and screen depth. Hydraulic head can similarly be measured in a column of water using a standpipe piezometer by measuring the height of the water surface in the tube relative to a common datum. The hydraulic head can be used to determine a ''hydraulic gradient'' between two or more points. "Head" in fluid dynamics In fluid dynamics, ''head'' is a concept that relates the energy in an incompressible fluid to the height of an equivalent static column of that fluid. From Bernoulli's principle, the total energy at a given point in a flui ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volt-ampere
A volt-ampere ( SI symbol: V⋅A or V A, simplified as VA) is the unit for the apparent power in an electrical circuit. The apparent power equals the product of root mean square voltage (in volts) and root mean square current (in amperes). Volt-amperes are usually used for analyzing alternating current (AC) circuits. In direct current (DC) circuits, this product is equal to the real power, in watts. The volt-ampere is dimensionally equivalent to the watt: in SI units, 1 V⋅A = 1 W). VA rating is most used for generators and transformers (and other power handling equipment) where loads may be reactive (inductive or capacitive). Formulation For a simple electrical circuit running on direct current, the electrical current and voltage are constant. In that case, the real power (''P'', measured in watts) is the product of the electrical current (''I'', measured in amperes) and the voltage from one side of the circuit to the other (''V'', measured in volts ... [...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] |
