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Jatigede Dam
The Jatigede Dam is an embankment dam on the Cimanuk River in Sumedang Regency, West Java, Indonesia. It is located east of the town of Sumedang. Construction on the dam began in 2008 and it was completed in 2015. The power station is expected to be commissioned in 2019. The primary purpose of the dam is irrigation but it will also provide for flood control, water supply and hydroelectric power generation. Water in the reservoir will be used to help irrigate of farmland and the power station is expected to have a 110 MW capacity. The project has become controversial, primarily due to the relocation of people in the future reservoir zone. Background The dam was first proposed in 1963 after a study of the Cimanuk was carried out by Coyne et Bellier. Further planning and designs commenced thereafter. An environmental impact assessment was completed in 1986 and land acquisition study in 2003. After decades of planning and protests, the Indonesian Government announced firm plans to pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sumedang
Sumedang (former spelling: Soemedang) is a town in Western Java, Indonesia, approximately 46 km northeast of Bandung. It is the capital of Sumedang Regency. The town is just south of the volcanic Mount Tampomas, which is 1,684 m (5,525 ft) high and is usually climbed from Cimalaka District, 7 km from Sumedang. Sumedang's museum, Prabu Geusan Ulun, houses a collection of traditional Sundanese weaponry, as well as some crown jewels and other finery. It is on Geusan Ulun Road. The town is famous for '' Sumedang tofu'', a local variety of deep fried tofu which was first made by a Chinese immigrant, Ong Kino. In the district surrounding the town lies Cadas Pangeran, a section of the trans-Java postal road constructed on the order of Dutch governor named Willem Daendels during the first quarter of the 19th century. The section is famous due to difficulty during the construction, which required blasting of a mountainside. Hence "cadas" which means mountain rock ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sinohydro Corporation
Sinohydro (Chinese Language, Chinese: 中国水电; long form: 中国水利水电建设集团公司) is a Chinese SASAC, state-owned hydropower engineering and construction company. In the 2012 Engineering News-Record Top 225 Global Contractors, a ranking by annual revenue, the company is 14th by overall position, and 6th among Chinese construction companies. History The company was founded in 1950, and is based in Beijing, China. International expansion The company has gone on the path of international expansion, becoming a "face of China expansion" across the world by pursuing operations in 55 countries across Asia, Africa, Europe (from the European headquarters of Belgrade, Serbia), North America, and South America. these days Sinohydro is expanding into the Israeli market and constructing a hydro-electric station in Kochav-Hayarden. In the course of international expansion, the company has run into bumps ranging from political risk to environmental controversy. Workers ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reservoirs In Indonesia
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 constructed across a valley, and rely on the natural topography to provide most of the basin of the res ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydroelectric Power Stations In Indonesia
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 Indonesia
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. Dams were us ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Power Stations In Indonesia
The following lists some of the larger power stations in Indonesia. Data are not included for a large number of small isolated plants (mostly diesel) in the Outer Islands. In total, the PLN operated over 5,000 plants across Indonesia in 2010 of which over 4,500 were small diesel plants outside of Java. For further details about existing capacity and operations of the electricity sector, see information about the state-owned Indonesian electricity company ''Perusahaan Listrik Negara''. Non-renewable Thermal Thermal power is the largest source of power in Indonesia. There are different types of thermal power plants based on the fuel used to generate the steam such as coal, gas, diesel etc. About 85% of electricity consumed in Indonesia is generated by thermal power plants. Bituminous coal or lignite =Existing= ''Note: IPP means independent power producer'' =Proposed or under construction = Gas or liquid fuel Renewable Geothermal ''Note: IPP means independent p ... [...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 fluid i ... [...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 for d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drainage Basin
A drainage basin is an area of land where all flowing surface water converges to a single point, such as a river mouth, or flows into another body of water, such as a lake or ocean. A basin is separated from adjacent basins by a perimeter, the '' drainage divide'', made up of a succession of elevated features, such as ridges and hills. A basin may consist of smaller basins that merge at river confluences, forming a hierarchical pattern. Other terms for a drainage basin are catchment area, catchment basin, drainage area, river basin, water basin, and impluvium. In North America, they are commonly called a watershed, though in other English-speaking places, "watershed" is used only in its original sense, that of a drainage divide. In a closed drainage basin, or endorheic basin, the water converges to a single point inside the basin, known as a sink, which may be a permanent lake, a dry lake, or a point where surface water is lost underground. Drainage basins are similar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radial Gate
The Tainter gate is a type of radial arm floodgate used in dams and canal locks to control water flow. It is named for Wisconsin structural engineer Jeremiah Burnham Tainter. A side view of a Tainter gate resembles a slice of pie with the curved part of the piece facing the source or upper pool of water and the tip pointing toward the destination or lower pool. The curved face or skinplate of the gate takes the form of a wedge section of cylinder. The straight sides of the pie shape, the trunnion arms, extend back from each end of the cylinder section and meet at a trunnion which serves as a pivot point when the gate rotates. Pressure forces on a submerged body act perpendicular to the body's surface. The design of the Tainter gate results in every pressure force acting through the centre of the imaginary circle of which the gate is a section, so that all resulting pressure force acts through the pivot point of the gate, making construction and design easier. When a Tain ... [...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] |
