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Lerwick Power Station
The main power supply for Shetland is provided by Lerwick Power Station, located in Gremista, northwest of Lerwick town centre. This is the principal source of electrical energy for Shetland, however currently about 20 MWe is provided by the Sullom Voe Terminal power station which comprises 4 x 23 MWe Gas Turbines, the future of which is uncertain. Opened on 27 May 1953 the station is diesel-fuelled and generates a total of 66 MW of power. Equipment Originally the facility had six 6 MWe Mirrlees diesel generator K Major sets (some of which have been decommissioned); two 8 MWe French Pielstick engines were added in 1983 and a further Finnish 12 MWe Wärtsilä (originally a Stork Werkspoor design) engine was commissioned in 1994. A waste-heat recovery system applied to the exhaust of the Wartsila only produces super-heated steam which runs a 2.1 MW WH Allen turbine, thus making this set a combined cycle. Two standby gas turbine generator units, each wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lerwick
Lerwick (; non, Leirvik; nrn, Larvik) is the main town and port of the Shetland archipelago, Scotland. Shetland's only burgh, Lerwick had a population of about 7,000 residents in 2010. Centred off the north coast of the Scottish mainland and on the east coast of the Shetland Mainland, Lerwick lies north-by-northeast of Aberdeen; west of the similarly sheltered port of Bergen in Norway; and south east of Tórshavn in the Faroe Islands. One of the UK's coastal weather stations is situated there, with the local climate having small seasonal variation due to the maritime influence. Being located further north than Saint Petersburg and the three mainland Nordic capitals, Lerwick's nights in the middle of summer only get dark twilight and winters have below six hours of complete daylight. History Lerwick is a name with roots in Old Norse and its local descendant, Norn, which was spoken in Shetland until the mid-19th century. The name "Lerwick" means ''bay of clay''. The c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Combined Cycle
A combined cycle power plant is an assembly of heat engines that work in tandem from the same source of heat, converting it into mechanical energy. On land, when used to make electricity the most common type is called a combined cycle gas turbine (CCGT) plant. The same principle is also used for marine propulsion, where it is called a combined gas and steam (COGAS) plant. Combining two or more thermodynamic cycles improves overall efficiency, which reduces fuel costs. The principle is that after completing its cycle in the first engine, the working fluid (the exhaust) is still hot enough that a second subsequent heat engine can extract energy from the heat in the exhaust. Usually the heat passes through a heat exchanger so that the two engines can use different working fluids. By generating power from multiple streams of work, the overall efficiency can be increased by 50–60%. That is, from an overall efficiency of the system of say 34% for a simple cycle, to as much as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Natural Gas-fired Power Stations In Scotland
Nature, in the broadest sense, is the physical world or universe. "Nature" can refer to the phenomena of the physical world, and also to life in general. The study of nature is a large, if not the only, part of science. Although humans are part of nature, human activity is often understood as a separate category from other natural phenomena. The word ''nature'' is borrowed from the Old French ''nature'' and is derived from the Latin word ''natura'', or "essential qualities, innate disposition", and in ancient times, literally meant " birth". In ancient philosophy, ''natura'' is mostly used as the Latin translation of the Greek word '' physis'' (φύσις), which originally related to the intrinsic characteristics of plants, animals, and other features of the world to develop of their own accord. The concept of nature as a whole, the physical universe, is one of several expansions of the original notion; it began with certain core applications of the word φύσις by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lerwick District Heating And Energy Recovery Plant
Lerwick District Heating and Energy Recovery Plant is a district heating scheme based in Lerwick, The Lerwick District Heating Scheme is operated by Shetland Heat Energy and Power Ltd (SHEAP) while the Energy Recovery Plant (ERP) Shetland feeds into the scheme and is operated by the Shetland Islands Council. The main SHEAP offices are located close to the Lerwick Power Station The main power supply for Shetland is provided by Lerwick Power Station, located in Gremista, northwest of Lerwick town centre. This is the principal source of electrical energy for Shetland, however currently about 20 MWe is provided by the Su ... along with a 12 MWh heat store. The scheme is one of the longest running schemes of its kind in the UK. Heat distribution The district heating scheme has over 30 km of mains pipes connecting over 1,200 properties. These properties range from hospitals, schools, care homes, leisure centre, industry, retail and housing. Energy recovery plant The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shetland HVDC Connection
Shetland HVDC Connection is a high-voltage direct current submarine power cable under construction to connect Shetland to the British mainland. Current status In April 2022, the project was described as "on track to be completed by 2024". The subsea cable installation is ongoing, and expected to continue until 2023. Route The interconnector starts at the Upper Kergord Valley converter station in Shetland. From the converter station an underground cable runs to a landing area in Weisdale Voe. From there, a subsea cable runs to landfall at Noss Head in Caithness, with onward connection to an HVDC switching station north of the village of Staxigoe in Caithness. The route of the cable crosses TAT-10, TAT-14 and Atlantic Crossing 1 telecommunication cables and the Piper–Flotta oil pipeline. Technical description The interconnector will connect to the existing 320kV Caithness - Moray Link to form a three terminal HVDC network, with converter stations at Spittal in Caithness ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sodium–sulfur Battery
A sodium–sulfur battery is a type of molten-salt battery constructed from liquid sodium (Na) and sulfur (S). This type of battery has a high energy density (its energy density is 5 times that of a lead-acid battery), high efficiency of charge/discharge and is fabricated from inexpensive and non-toxic materials. The operating temperatures of 300 to 350 °C and the highly corrosive nature of the sodium polysulfides, primarily make them suitable for stationary energy storage applications. The cell becomes more economical with increasing size. Commercially available cells are typically large with high capacities (up to 500Ah). This is because of the Square-cube law: large cells have less relative heat loss, so maintaining their high operating temperatures is easier. These batteries, although having a reasonably long long cycle life (>1000 on average) are prone to disastrous failures due to a reaction between molten sodium and molten sulfur , and primarily for this reasons ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wind Turbines
A wind turbine is a device that converts the kinetic energy of wind into electrical energy. Hundreds of thousands of large turbines, in installations known as wind farms, now generate over 650 gigawatts of power, with 60 GW added each year. Wind turbines are an increasingly important source of intermittent renewable energy, and are used in many countries to lower energy costs and reduce reliance on fossil fuels. One study claimed that, wind had the "lowest relative greenhouse gas emissions, the least water consumption demands and the most favorable social impacts" compared to photovoltaic, hydro, geothermal, coal and gas energy sources. Smaller wind turbines are used for applications such as battery charging for auxiliary power for boats or caravans, and to power traffic warning signs. Larger turbines can contribute to a domestic power supply while selling unused power back to the utility supplier via the electrical grid. Wind turbines are manufactured in a wide range ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gas Turbine
A gas turbine, also called a combustion turbine, is a type of continuous flow internal combustion engine. The main parts common to all gas turbine engines form the power-producing part (known as the gas generator or core) and are, in the direction of flow: * a rotating gas compressor * a combustor * a compressor-driving turbine. Additional components have to be added to the gas generator to suit its application. Common to all is an air inlet but with different configurations to suit the requirements of marine use, land use or flight at speeds varying from stationary to supersonic. A propelling nozzle is added to produce thrust for flight. An extra turbine is added to drive a propeller ( turboprop) or ducted fan (turbofan) to reduce fuel consumption (by increasing propulsive efficiency) at subsonic flight speeds. An extra turbine is also required to drive a helicopter rotor or land-vehicle transmission ( turboshaft), marine propeller or electrical generator (power turbine). Grea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Werkspoor
Werkspoor N.V. was the shortened, and later the official name of the Nederlandsche Fabriek van Werktuigen en Spoorwegmaterieel. It was a Dutch machine factory, known for rolling stock, (ship) steam engines, and diesel engines. It was a successor of the company Van Vlissingen en Dudok van Heel, later named Koninklijke Fabriek van Stoom- en andere Werktuigen. In 1954 Werkspoor was merged with Stork. Founded as Nederlandsche Fabriek van Werktuigen en spoorwegmaterieel In March 1890 the predecessor of Werkspoor asked for an automatic stay. After many years of heavy losses the financial world lacked confidence in this predecessor, the Koninklijke Fabriek van Stoom- en andere Werktuigen. What was needed was a radical restructuring and new leadership. Because of the national and city interest, authorities intervened to bring this about. The mayor of Amsterdam G. van Tienhoven succeeded in engaging C.T. Stork (owner of the machine factory Stork) in the operation and to provide a go ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shetland
Shetland, also called the Shetland Islands and formerly Zetland, is a subarctic archipelago in Scotland lying between Orkney, the Faroe Islands and Norway. It is the northernmost region of the United Kingdom. The islands lie about to the northeast of Orkney, from mainland Scotland and west of Norway. They form part of the border between the Atlantic Ocean to the west and the North Sea to the east. Their total area is ,Shetland Islands Council (2012) p. 4 and the population totalled 22,920 in 2019. The islands comprise the Shetland constituency of the Scottish Parliament. The local authority, the Shetland Islands Council, is one of the 32 council areas of Scotland. The islands' administrative centre and only burgh is Lerwick, which has been the capital of Shetland since 1708, before which time the capital was Scalloway. The archipelago has an oceanic climate, complex geology, rugged coastline, and many low, rolling hills. The largest island, known as " the Mainland", ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sullom Voe Terminal
The Sullom Voe Terminal is an oil and gas terminal at Sullom Voe in the Shetland Islands of Scotland. It handles production from oilfields in the North Sea and East Shetland Basin and stores oil before it is transported by tanker. Construction When Shetland was identified as a location to provide pipeline terminal and support facilities for offshore oil installations in the northern North Sea, corporations involved had expected to each build their own terminal facilities. However, wishing to minimize the negative impacts of the industry, the Shetland Islands Council, with power granted to it by the UK Parliament in the 1974 Zetland County Council Act, was able to contain all pipeline terminal facilities at the Sullom Voe site. Sullom Voe Terminal was built between 1975 and 1981. 6,000 people were employed during construction. They were housed in temporary accommodation, including the former car ferry . The first oil was received at 18:40 on 25 November 1978 via the Brent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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