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Bissorte Dam
The Bissorte Dam (french: Barrage de Bissorte) is a gravity dam in the Maurienne Valley, in Savoie, France, about east of Valmeinier. It was built from 1930 to 1935 to supply a hydroelectric plant capable of generating 75 megawatts (MW) of power. The complex was reconfigured from 1980 to 1986 in order to add a 750 MW pumped-storage power plant known as ''Super-Bissorte'', the third most powerful in France after Grand'Maison and Montézic. Location The Bissorte Dam is perched on an ancient glacial basin, now alpine tundra, in the Massif des Cerces. It is close to the Valfréjus ski resort in the commune of Modane, near the Italian border. History During the 1920s, a period of intense stock market speculation on hydroelectricity in France, Bissorte's potential as a building site drew much attention. In 1930, work began on the construction of a gravity dam with a stone facing to protect its concrete structure. The power plant, known today as ''Bissorte 1'', was put into opera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cime De Caron
Cime de Caron is a mountain of Savoie, France. It lies in the Massif de la Vanoise range. It has an elevation of above sea level. It is a mountain in the Les Trois Vallées, Three Valleys (Les Trois Vallées) a popular ski resort, in the valley of Les Belleville, in the resort of Val Thorens. It has four ski slopes: three black, and one red. One of the blacks (Combe de Rosael) goes into the secret fourth valley, in the three valleys, Orelle. Cime de Caron is the second-highest skiing point in the Three Valleys. References Mountains of the Alps Alpine three-thousanders Mountains of Savoie {{Savoie-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Montézic Power Station
The Montézic Power Station (French: ''Centrale de Montézic'') is a pumped-storage power plant near the commune of Montézic in northern Aveyron, France. Its 910 megawatt capacity ranks it second among France's main pumped-storage facilities, and is the only one situated on the Central Massif. Montézic is a pure pumped-storage plant, which means that its upstream reservoir receives little to no natural inflow of water. The station has a weekly time cycle. History The power station underwent construction in 1976 and was commissioned in 1982. The following are some key dates from this period: In August 1976: the power station's access tunnel was bored, and betweenNovember 1977 and July 1978 Grading work for the plant, the connecting tunnels, and the dams was carried out. In July 1979 assembly of the turbine generators took place. In May 1981 the Etang Dam (''Barrage de l'Etang'') was completed, and from June to August the upper reservoir was filled. * October 1981: Complet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reservoir
A reservoir (; from French ''réservoir'' ) is an enlarged lake behind a dam. Such a dam may be either artificial, built to store fresh water or it may be a natural formation. Reservoirs can be created in a number of ways, including controlling a watercourse that drains an existing body of water, interrupting a watercourse to form an embayment within it, through excavation, or building any number of retaining walls or levees. In other contexts, "reservoirs" may refer to storage spaces for various fluids; they may hold liquids or gasses, including hydrocarbons. ''Tank reservoirs'' store these in ground-level, elevated, or buried tanks. Tank reservoirs for water are also called cisterns. Most underground reservoirs are used to store liquids, principally either water or petroleum. Types Dammed valleys Dammed reservoirs are artificial lakes created and controlled by a dam A dam is a barrier that stops or restricts the flow of surface water or underground streams ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peak Demand
Peak demand on an electrical grid is simply the highest electrical power demand that has occurred over a specified time period (Gönen 2008). Peak demand is typically characterized as annual, daily or seasonal and has the unit of power. Peak demand, peak load or on-peak are terms used in energy demand management describing a period in which electrical power is expected to be provided for a sustained period at a significantly higher than average supply level. Peak demand fluctuations may occur on daily, monthly, seasonal and yearly cycles. For an electric utility company, the actual point of peak demand is a single half-hour or hourly period which represents the highest point of customer consumption of electricity. At this time there is a combination of office, domestic demand and at some times of the year, the fall of darkness. Some utilities will charge customers based on their individual peak demand. The highest demand during each month or even a single 15 to 30 minute period ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turbines
A turbine ( or ) (from the Greek , ''tyrbē'', or Latin ''turbo'', meaning vortex) is a rotary mechanical device that extracts energy from a fluid flow and converts it into useful Work (physics), work. The work produced by a turbine can be used for generating electrical power when combined with a electric generator, generator.Munson, Bruce Roy, T. H. Okiishi, and Wade W. Huebsch. "Turbomachines." Fundamentals of Fluid Mechanics. 6th ed. Hoboken, NJ: J. Wiley & Sons, 2009. Print. A turbine is a turbomachinery, turbomachine with at least one moving part called a rotor assembly, which is a shaft or drum with Turbine blade, blades attached. Moving fluid acts on the blades so that they move and impart rotational energy to the rotor. Early turbine examples are windmills and waterwheels. Gas turbine, Gas, steam turbine, steam, and water turbine, water turbines have a casing around the blades that contains and controls the working fluid. Credit for invention of the steam turbine is given ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Penstock
A penstock is a sluice or gate or intake structure that controls water flow, or an enclosed pipe that delivers water to hydro turbines and sewerage systems. The term is inherited from the earlier technology of mill ponds and watermills. Hydroelectric systems and dams Penstocks for hydroelectric installations are normally equipped with a gate system and a surge tank. They can be a combination of many components such as anchor block, drain valve, air bleed valve, and support piers depending on the application. Flow is regulated by turbine operation and is nil when turbines are not in service. Penstocks, particularly where used in polluted water systems, need to be maintained by hot water washing, manual cleaning, antifouling coatings, and desiccation. The term is also used in irrigation dams to refer to the channels leading to and from high-pressure sluice gates. Penstocks are also used in mine tailings dam construction. The penstock is usually situated fairly close to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electric Utility
An electric utility is a company in the electric power industry (often a public utility) that engages in electricity generation and distribution of electricity for sale generally in a regulated market. The electrical utility industry is a major provider of energy in most countries. Electric utilities include investor owned, publicly owned, cooperatives, and nationalized entities. They may be engaged in all or only some aspects of the industry. Electricity markets are also considered electric utilities—these entities buy and sell electricity, acting as brokers, but usually do not own or operate generation, transmission, or distribution facilities. Utilities are regulated by local and national authorities. Electric utilities are facing increasing demandsBy Candace Lombardi, CNET. Utilities: Green tech good for planet, bad for business” February 23, 2010. including aging infrastructure, reliability, and regulation. In 2009, the French company EDF was the world's largest prod ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Concrete
Concrete is a composite material composed of fine and coarse aggregate bonded together with a fluid cement (cement paste) that hardens (cures) over time. Concrete is the second-most-used substance in the world after water, and is the most widely used building material. Its usage worldwide, ton for ton, is twice that of steel, wood, plastics, and aluminum combined. Globally, the ready-mix concrete industry, the largest segment of the concrete market, is projected to exceed $600 billion in revenue by 2025. This widespread use results in a number of environmental impacts. Most notably, the production process for cement produces large volumes of greenhouse gas emissions, leading to net 8% of global emissions. Other environmental concerns include widespread illegal sand mining, impacts on the surrounding environment such as increased surface runoff or urban heat island effect, and potential public health implications from toxic ingredients. Significant research and development is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Speculation
In finance, speculation is the purchase of an asset (a commodity, good (economics), goods, or real estate) with the hope that it will become more valuable shortly. (It can also refer to short sales in which the speculator hopes for a decline in value.) Many speculators pay little attention to the fundamental value of a security and instead focus purely on price movements. In principle, speculation can involve any tradable good or financial instrument. Speculators are particularly common in the markets for stocks, bond (finance), bonds, commodity futures, currency, currencies, fine art, collectibles, real estate, and derivative (finance), derivatives. Speculators play one of four primary roles in financial markets, along with hedge (finance), hedgers, who engage in transactions to offset some other pre-existing risk, arbitrageus who seek to profit from situations where Fungibility, fungible instruments trade at different prices in different market segments, and investors who s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Italy
Italy ( it, Italia ), officially the Italian Republic, ) or the Republic of Italy, is a country in Southern Europe. It is located in the middle of the Mediterranean Sea, and its territory largely coincides with the homonymous geographical region. Italy is also considered part of Western Europe, and shares land borders with France, Switzerland, Austria, Slovenia and the enclaved microstates of Vatican City and San Marino. It has a territorial exclave in Switzerland, Campione. Italy covers an area of , with a population of over 60 million. It is the third-most populous member state of the European Union, the sixth-most populous country in Europe, and the tenth-largest country in the continent by land area. Italy's capital and largest city is Rome. Italy was the native place of many civilizations such as the Italic peoples and the Etruscans, while due to its central geographic location in Southern Europe and the Mediterranean, the country has also historically been home ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Modane
Modane (; ) is a Communes of France, commune in the Savoie Departments of France, department in the Auvergne-Rhône-Alpes Regions of France, region in southeastern France. The commune is in the Maurienne Valley, and it also belongs to the Vanoise National Park. It was part of the Kingdom of Sardinia until the Treaty of Turin (1860), Treaty of Turin in 1860. Geography Location The commune of Modane is located in the Alps in the department of Savoie between the Vanoise massif to the north and between the and the Massif des Cerces to the south. Crossed by the Arc (Savoie), Arc river, it extends to the doors of the Haute-Maurienne. The issue of the attachment or not of Modane in the Maurienne Valley or Haute-Maurienne differs depending on the disciplines of economics, geography or geology. For economists, Modane is attached to Haute Maurienne, arguing that the city has a very strong influence on the villages of Haute Maurienne, through economic and administrative infrastructure s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Communes Of France
The () is a level of administrative division in the French Republic. French are analogous to civil townships and incorporated municipalities in the United States and Canada, ' in Germany, ' in Italy, or ' in Spain. The United Kingdom's equivalent are civil parishes, although some areas, particularly urban areas, are unparished. are based on historical geographic communities or villages and are vested with significant powers to manage the populations and land of the geographic area covered. The are the fourth-level administrative divisions of France. vary widely in size and area, from large sprawling cities with millions of inhabitants like Paris, to small hamlets with only a handful of inhabitants. typically are based on pre-existing villages and facilitate local governance. All have names, but not all named geographic areas or groups of people residing together are ( or ), the difference residing in the lack of administrative powers. Except for the municipal arrondi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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