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Gravity Battery
A gravity battery is a type of energy storage device that stores gravitational energy—the potential energy ''E'' given to an object with a mass ''m'' when it is raised against the force of gravity of Earth (''g'', 9.8 m/s²) into a height difference ''h''. In a common application, when renewable energy sources such as wind and solar provide more energy than is immediately required, the excess energy is used to move a mass upward against the force of gravity to generate gravitational potential energy. When customers eventually require more energy than the sources can provide, the mass is lowered to convert the potential energy into electricity using an electric generator. Though solid masses such as concrete blocks can be used, more commonly, pumped-storage hydroelectricity generation involves pumping water to higher elevations and later guiding it through water turbines to generate electricity. Technical background An old and simple application is the pendulum clock driven ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
20240706 Energy Storage - Renewable Energy - Battery - 100 Ms
4 (four) is a number, numeral and digit. It is the natural number following 3 and preceding 5. It is a square number, the smallest semiprime and composite number, and is considered unlucky in many East Asian cultures. Evolution of the Hindu-Arabic digit Brahmic numerals represented 1, 2, and 3 with as many lines. 4 was simplified by joining its four lines into a cross that looks like the modern plus sign. The Shunga would add a horizontal line on top of the digit, and the Kshatrapa and Pallava evolved the digit to a point where the speed of writing was a secondary concern. The Arabs' 4 still had the early concept of the cross, but for the sake of efficiency, was made in one stroke by connecting the "western" end to the "northern" end; the "eastern" end was finished off with a curve. The Europeans dropped the finishing curve and gradually made the digit less cursive, ending up with a digit very close to the original Brahmin cross. While the shape of the character f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Markersbach Pumped Storage Power Plant
The Markersbach Pumped Storage Power Plant is a hydroelectric power station utilizing pumped-storage technology in Markersbach, Saxony, Germany. The installed capacity of the power plant is 1,045 MW. It is Germany's second largest Pumped Storage Power Plant. It is owned and operated by Vattenfall Vattenfall is a Swedish multinational corporation, multinational electrical power industry, power company owned by the List of government enterprises of Sweden, Swedish state. Beyond Sweden, the company generates power in Denmark, Finland, Germa ... (Vattenfall Wasserkraft GmbH). History Planning for the power plant began in 1961, construction began in 1970 and the generators were commissioned in 1979. The power station generates electricity by moving water between an upper and lower reservoir. During periods of low energy demand, water is pumped from the lower reservoir at an elevation of to an upper reservoir at . When energy demand is high, the water is released back down towar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Train Car
A railroad car, railcar ( American and Canadian English), railway wagon, railway carriage, railway truck, railwagon, railcarriage or railtruck (British English and UIC), also called a train car, train wagon, train carriage or train truck, is a vehicle used for the carrying of cargo or passengers on a rail transport network (a railroad/railway). Such cars, when coupled together and hauled by one or more locomotives, form a train. Alternatively, some passenger cars are self-propelled in which case they may be either single railcars or make up multiple units. The term "car" is commonly used by itself in American English when a rail context is implicit. Indian English sometimes uses "bogie" in the same manner, though the term has other meanings in other variants of English. In American English, "railcar" is a generic term for a railway vehicle; in other countries "railcar" refers specifically to a self-propelled, powered, railway vehicle. Although some cars exist for the r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Guardian
''The Guardian'' is a British daily newspaper. It was founded in Manchester in 1821 as ''The Manchester Guardian'' and changed its name in 1959, followed by a move to London. Along with its sister paper, ''The Guardian Weekly'', ''The Guardian'' is part of the Guardian Media Group, owned by the Scott Trust Limited. The trust was created in 1936 to "secure the financial and editorial independence of ''The Guardian'' in perpetuity and to safeguard the journalistic freedom and liberal values of ''The Guardian'' free from commercial or political interference". The trust was converted into a limited company in 2008, with a constitution written so as to maintain for ''The Guardian'' the same protections as were built into the structure of the Scott Trust by its creators. Profits are reinvested in its journalism rather than distributed to owners or shareholders. It is considered a newspaper of record in the UK. The editor-in-chief Katharine Viner succeeded Alan Rusbridger in 2015. S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydraulic Head
Hydraulic head or piezometric head is a measurement related to liquid pressure (normalized by specific weight) and the liquid elevation above a vertical datum., 410 pages. See pp. 43–44., 650 pages. See p. 22, eq.3.2a. It is usually measured as an equivalent 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. Definition In fluid dynamics, the ''head'' at some point in an incompressible (constant density) flow is equal to the height of a static column of fluid whose pressure at ... [...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 (electrical power), 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 water turbine, turbines to produce electric power. Pumped-storage hydroelectricity allows energy from Intermittent energy source, intermittent sources (such as solar power, solar, Wind power, 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Work-energy Principle
In science, work is the energy transferred to or from an object via the application of force along a displacement. In its simplest form, for a constant force aligned with the direction of motion, the work equals the product of the force strength and the distance traveled. A force is said to do ''positive work'' if it has a component in the direction of the displacement of the point of application. A force does ''negative work'' if it has a component opposite to the direction of the displacement at the point of application of the force. For example, when a ball is held above the ground and then dropped, the work done by the gravitational force on the ball as it falls is positive, and is equal to the weight of the ball (a force) multiplied by the distance to the ground (a displacement). If the ball is thrown upwards, the work done by the gravitational force is negative, and is equal to the weight multiplied by the displacement in the upwards direction. Both force and displaceme ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edinburgh
Edinburgh is the capital city of Scotland and one of its 32 Council areas of Scotland, council areas. The city is located in southeast Scotland and is bounded to the north by the Firth of Forth and to the south by the Pentland Hills. Edinburgh had a population of in , making it the List of towns and cities in Scotland by population, second-most populous city in Scotland and the List of cities in the United Kingdom, seventh-most populous in the United Kingdom. The Functional urban area, wider metropolitan area had a population of 912,490 in the same year. Recognised as the capital of Scotland since at least the 15th century, Edinburgh is the seat of the Scottish Government, the Scottish Parliament, the Courts of Scotland, highest courts in Scotland, and the Palace of Holyroodhouse, the official residence of the Monarchy of the United Kingdom, British monarch in Scotland. It is also the annual venue of the General Assembly of the Church of Scotland. The city has long been a cent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peter Fraenkel (marine Engineer)
Peter Fraenkel may refer to: * Peter Fraenkel (journalist) (1926–2024), journalist and author, controller of European services for the British Broadcasting Corporation * Peter Fraenkel (marine engineer), British marine engineer * Peter Fraenkel (civil engineer) (1915–2009), British civil engineer {{hndis, Fraenkel, Peter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arbedo-Castione
Arbedo-Castione is a municipality in the district of Bellinzona in the canton of Ticino in Switzerland. Geography Arbedo-Castione has an area, , of . Of this area, or 6.0% is used for agricultural purposes, while or 77.6% is forested. Of the rest of the land, or 8.8% is settled (buildings or roads), or 1.8% is either rivers or lakes and or 4.0% is unproductive land. Of the built up area, industrial buildings made up 1.8% of the total area while housing and buildings made up 2.9% and transportation infrastructure made up 2.8%. Power and water infrastructure as well as other special developed areas made up 1.3% of the area. Out of the forested land, 74.5% of the total land area is heavily forested and 1.6% is covered with orchards or small clusters of trees. Of the agricultural land, 2.6% is used for growing crops and 2.9% is used for alpine pastures. Of the water in the municipality, 0.2% is in lakes and 1.6% is in rivers and streams. Of the unproductive areas, 3.1% ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Energy Vault
Energy Vault is a global energy storage company specializing in gravity and kinetic energy based, long-duration energy storage products. Energy Vault's primary product is a gravity battery to store energy by stacking heavy blocks made of composite material into a structure, capturing potential energy in the elevation gain of the blocks. When demand for electricity is high, these blocks are lowered with the motors functioning as generators and delivering electricity to the grid. History In 2017, Energy Vault was founded by a group of Swiss engineers in the Idealab startup studio. In 2019, Energy Vault secured funding from Cemex before going on to secure $110m of Series B funding to become the first energy storage investment of the SoftBank Vision Fund, and won Fast Company's World Changing Idea Award for transformative utility-scale energy storage. In 2020, Energy Vault was Named Technology Pioneer by World Economic Forum and completed the mechanical construction of the fir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
GravityLight
GravityLight was a Mechanically powered flashlight, gravity-powered lamp manufactured until 2019. It was designed by the company Deciwatt for use in developing world, developing or third-world nations, as a replacement for kerosene lamps. It uses a bag filled with rocks or earth, attached to a cord, which slowly descends similar to the weight drive in a cuckoo clock. This action was claimed to power the light for up to twenty minutes. The design never proceeded beyond a limited number of early prototypes which did not appear to be practically usable by many consumers, and the company announced a change of direction in 2020. Theory of operation The GravityLight converts potential energy that is stored in a weight into light. The principles involved in this design are very similar to the principles in a cuckoo clock or grandfather clock powered by a weight, but with the potential energy of the weight being converted to visible energy rather than kinetic energy. The theoretical p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
