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Severn-Wye Cable Tunnel
The Severn-Wye Cable Tunnel, also known as the Severn Cable Tunnel, carries high-voltage (400 kV) electricity transmission lines beneath the estuaries of the River Severn and River Wye between Newhouse (Mathern), Monmouthshire and Aust, South Gloucestershire. History To exploit the generating capacity of new power stations being built in the late 1960s at Pembroke (2,000 MW) and Aberthaw ('A' 600 MW, 'B' 1,400 MW), the Central Electricity Generating Board (CEGB) planned to construct 400 kV supergrid lines through South Wales and Gloucestershire to National Grid connection points at Gloucester and Melksham, Wiltshire. The CEGB intended the line to Melksham substation to cross the River Severn at Sharpness using overhead cables. A public inquiry was held in 1967 and objections were raised by the Council for the Preservation of Rural England and several District and Parish Councils. The principal objection was to the impact of the power lines on the scenery of the Cotswolds and of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pembroke Power Station
Pembroke B Power Station is a 2,200 MWe natural gas-fired power station near Pembroke in Wales. The power station was officially opened in September 2012 and is the largest gas-fired power station in Europe. It is also the largest power station to be built in the UK since Drax power station came online in 1986. Pembroke Power Station currently generates enough power to supply 3.5 million homes and businesses. It is operated by RWE. It is a CCGT-type power station that uses natural gas. There are five 400 MW modules, each with a 288 MWe Alstom gas turbine, heat recovery steam generator and steam turbine. Oil-fired predecessor From 1968 until 2000, a CEGB 2,000 MW oil-fired power station existed on the site of the current power station. The station had four 500 MW turbo-alternators. The boilers delivered 1,788 kg/s of steam to the turbines at 158.6 bar and 538 °C. Sea water was used for station cooling. There were 3 × 25 MW auxiliary gas turbi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British Insulated Callender's Cables
British Insulated Callender's Cables (BICC) was a 20th-century British cable manufacturer and construction company, now renamed after its former subsidiary Balfour Beatty. It was formed from the merger of two long established cable firms, Callender's Cable & Construction Company and British Insulated Cables. History Callender's Cable & Construction Company Callender's Cable & Construction Company was founded by William Ormiston Callender in 1870. It was originally an importer and refiner of bitumen for road construction but began manufacturing insulated cables at their Erith site on the Thames in the 1880s. It played a significant role in construction of the British National Grid (Great Britain), National Grid in the 1930s building the 400 kV Thames Crossing#132 kV Thames Crossing, 132 kV crossing of the Thames at Dagenham with overhead cables spanning 3060 feet (932m) between two 487 ft (148m) towers, and allowing 250 ft (76m) clearance for shipping. Callender's resea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electric Power Infrastructure In The United Kingdom
Electricity is the set of physical phenomena associated with the presence and motion of matter that has a property of electric charge. Electricity is related to magnetism, both being part of the phenomenon of electromagnetism, as described by Maxwell's equations. Various common phenomena are related to electricity, including lightning, static electricity, electric heating, electric discharges and many others. The presence of an electric charge, which can be either positive or negative, produces an electric field. The movement of electric charges is an electric current and produces a magnetic field. When a charge is placed in a location with a non-zero electric field, a force will act on it. The magnitude of this force is given by Coulomb's law. If the charge moves, the electric field would be doing work on the electric charge. Thus we can speak of electric potential at a certain point in space, which is equal to the work done by an external agent in carrying a unit of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electric Power Infrastructure In England
Electricity is the set of physical phenomena associated with the presence and motion of matter that has a property of electric charge. Electricity is related to magnetism, both being part of the phenomenon of electromagnetism, as described by Maxwell's equations. Various common phenomena are related to electricity, including lightning, static electricity, electric heating, electric discharges and many others. The presence of an electric charge, which can be either positive or negative, produces an electric field. The movement of electric charges is an electric current and produces a magnetic field. When a charge is placed in a location with a non-zero electric field, a force will act on it. The magnitude of this force is given by Coulomb's law. If the charge moves, the electric field would be doing work on the electric charge. Thus we can speak of electric potential at a certain point in space, which is equal to the work done by an external agent in carrying a unit of positiv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fawley Tunnel
Fawley Tunnel is a diameter, long tunnel under Southampton Water between Fawley Power Station and Chilling near Warsash. It was constructed between 1962 and 1965 to carry two 400 kV circuits as part of the National Grid. The tunnel was built with a 3 feet 1.125 inch gauge railway to help with maintenance access. The railway was operated with a single battery powered locomotive that was scrapped in the late 70s. See also * Fawley Power Station Fawley Power Station was an oil-fired power station located on the western side of Southampton Water, between the villages of Fawley and Calshot in Hampshire, England. Its chimney was a prominent (and navigationally useful) landmark, but it ... References Tunnels in Hampshire Buildings and structures in Hampshire National Grid (Great Britain) Electric power infrastructure in England Electric power transmission in the United Kingdom Tunnels completed in 1965 {{Hampshire-struct-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
River Medway Cable Tunnels
The River Medway Cable Tunnels are a pair of tunnels carrying high-voltage electricity transmission lines beneath the lower River Medway between the Isle of Grain and Chetney Marshes, Kent. Specification Each tunnel carries a 400 kV electricity circuit on the transmission line between the National Grid substations at Grain and Kemsley (Line Reference: 4TL). The oil-filled cables are designed to carry 3780 Amps in Winter and 3060 A in Summer. The tunnels are 1,700 metres long, 2.54 m in diameter and between 34 m and 47 m below ordnance datum. The tunnels are connected to a common 6.1 m diameter vertical access shaft at each end. Grain sealing end compound location: 51°26'09.4"N 0°42'18.9"E Chetney Marsh sealing end compound location: 51°25'14.6"N 0°41'59.6"E Design and construction The tunnels were built in anticipation of the commissioning of Grain power station (with a planned capacity of 3,300 MW). The crossing would allow the transmission of power to the 400 kV t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thames Cable Tunnel
The Thames Cable Tunnel, also known as the Tilbury – Gravesend Cable Tunnel, is a tunnel carrying high-voltage electrical transmission lines beneath the lower River Thames between Tilbury and Gravesend. It remains the furthest tunnel downstream on the Thames. Completed in 1970 at a cost of around £3 million (equivalent to £ million in ) by the Central Electricity Generating Board, the tunnel carries 400 kV transmission cables between substations at Tilbury and Kingsnorth as part of the National Grid. The tunnel is approximately deep, and was one of the first tunnels in the UK to be lined with pre-cast concrete segments rather than cast iron. A tunnel was chosen due to the high costs of building an overhead transmission line at this point in the river. See also * 400 kV Thames Crossing * Dartford Cable Tunnel The Dartford Cable Tunnel is a 2.4 km utility tunnel beneath the Thames, upstream of the Dartford Crossing. With a diameter of ~, it carries a 400 kV ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aust Severn Powerline Crossing
Aust Severn Powerline Crossing is the longest overhead power line span in the United Kingdom with a length of . History The crossing spans the River Severn between Aust and Beachley and is part of the National Grid. It was commissioned in 1959, and comprises two 275 kV electricity circuits, which form part of the 275 kV Iron Acton to Whitson line. Construction It is situated south of the Severn Bridge and was built by J. L. Eve Construction, which became Eve Group, and is now Babcock Networks. It is mounted on two pylons, each tall. The pylon on the Aust side of the River Severn stands on a caisson accessible via a small bridge. See also * List of spans * Powerline river crossings in the United Kingdom * Crossings of the River Severn * Crossings of the River Wye *Severn-Wye Cable Tunnel The Severn-Wye Cable Tunnel, also known as the Severn Cable Tunnel, carries high-voltage (400 kV) electricity transmission lines beneath the estuaries of the River Severn and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lobe Pump
A lobe pump, or rotary lobe pump, is a type of positive displacement pump. It is similar to a gear pump except the lobes are designed to almost meet, rather than touch and turn each other. An early example of a lobe pump is the Roots Blower, patented in 1860 to blow combustion air to melt iron in blast furnaces, but now more commonly used as an engine supercharger. Lobe pumps are used in a variety of industries including pulp and paper, chemical, food, beverage, pharmaceutical, and biotechnology. They are popular in these diverse industries because they offer superb sanitary qualities, high efficiency, reliability, corrosion resistance and good clean-in-place and steam-in-place (CIP/SIP) characteristics. Rotary pumps can handle solids (e.g., cherries and olives), slurries, pastes, and a variety of liquids. If wetted, they offer self-priming performance. A gentle pumping action minimizes product degradation. They also offer continuous and intermittent reversible flows and can ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heat Exchanger
A heat exchanger is a system used to transfer heat between a source and a working fluid. Heat exchangers are used in both cooling and heating processes. The fluids may be separated by a solid wall to prevent mixing or they may be in direct contact. They are widely used in space heating, refrigeration, air conditioning, power stations, chemical plants, petrochemical plants, petroleum refineries, natural-gas processing, and sewage treatment. The classic example of a heat exchanger is found in an internal combustion engine in which a circulating fluid known as engine coolant flows through radiator coils and air flows past the coils, which cools the coolant and heats the incoming air. Another example is the heat sink, which is a passive heat exchanger that transfers the heat generated by an electronic or a mechanical device to a fluid medium, often air or a liquid coolant. Flow arrangement Image:Heat_exc_1-1.svg, Fig. 1: Shell and tube heat exchanger, single pass (1–1 parallel f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ministry Of Power (United Kingdom)
The Ministry of Power was a United Kingdom government ministry dealing with issues concerning energy. The Ministry of Power (then named Ministry of Fuel and Power) was created on 11 June 1942 from functions separated from the Board of Trade. It took charge of coal production, allocation of fuel supplies, control of energy prices and petrol rationing. These had previously been dealt with by the Secretary for Mines and in the case of petroleum since 1940 by the Secretary for Petroleum. The Petroleum Board, responsible for the coordination of the war-time petroleum 'pool' for oil supplies (except oil for the Royal Navy), continued in this role until the Board was dissolved in 1948. It also took over responsibility for electricity from the Ministry of War Transport and its predecessor the Ministry of Transport. The Ministry of Fuel and Power was renamed the Ministry of Power in January 1957. The Ministry of Power later became part of the Ministry of Technology on 6 October 196 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aberthaw Power Stations
Aberthaw Power Station refers to two decommissioned coal-fired and co-fired biomass power stations on the coast of South Wales, near Barry in the Vale of Glamorgan. They were located at Limpert Bay, near the villages of Gileston and West Aberthaw. The most recent power station on the site, Aberthaw B Power Station, co-fired biomass and as of 2008 had a generating capacity of 1,560 megawatts (MW). The power station closed on 31 March 2020. The station was the location of a carbon capture trial system to determine whether the technology could be scaled up from lab conditions. The system consumed 1 MW. History The site of the stations was a golf course before the construction of the first station. Aberthaw was constructed by the Central Electricity Generating Board (CEGB) under the chairmanship of Christopher Hinton. It is known as one of the original 'Hinton Heavies', a suite of new 500 MW units procured at the time. Aberthaw "A" Power Station altho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
