|
Touwsrivier CPV Solar Project
Touwsrivier CPV Solar Project is a 44 MWp (36 MWAC) concentrator photovoltaics (CPV) power station located 13 km outside the town of Touwsrivier in the Western Cape of South Africa. The installation reached full capacity in December 2014 and is the second largest operating CPV facility in the world. Electricity produced by the plant is fed into the national grid operated by Eskom under a 20-year power purchase agreement (PPA). Facility construction details The facility consists of 1500 dual-axis CX-S530-II solar tracking systems divided into 60 sections. The 25 systems of each section are connected in parallel to a central grid-connected 630 kW inverter. Each system supports 12 CX-M500 modules which are each rated to produce 2450 Wp. Each module contains 2,400 fresnel lenses to concentrate sunlight 500 times onto multi-junction solar cells, allowing a greater efficiency than other photovoltaic power plants. The facility is sited on 190 hecta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Touws River (town)
Touws River ( af, Touwsrivier) is a small railway town of 6,800 people in the Western Cape province of South Africa. It is located on the river of the same name, about north-east of Cape Town. The Touwsrivier CPV Solar Project is located just outside of the town and supplies 50 MW to the national electrical grid. History The town of Touws River owes its existence to the Cape Government Railways, and to the route that their founder, Cape Prime Minister John Molteno, chose for a railway line over the Hex River Mountains. A railway was needed from the port at Cape Town, to service the newly discovered diamond fields in Kimberley. However, several seemingly impregnable ranges of mountains separated Cape Town from the hinterland of the Cape. The Royal Commonwealth Society (1898) records how the route was chosen: ''When Mr. Molteno formulated his railway scheme he sent for his consulting engineer, who asked him what was the route he desired. Mr. Molteno asked for a map of South Afri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fresnel Lens
A Fresnel lens ( ; ; or ) is a type of composite compact lens developed by the French physicist Augustin-Jean Fresnel (1788–1827) for use in lighthouses. It has been called "the invention that saved a million ships." The design allows the construction of lenses of large aperture and short focal length without the mass and volume of material that would be required by a lens of conventional design. A Fresnel lens can be made much thinner than a comparable conventional lens, in some cases taking the form of a flat sheet. The simpler dioptric (purely refractive) form of the lens was first proposed by Count Buffon and independently reinvented by Fresnel. The ''catadioptric'' form of the lens, entirely invented by Fresnel, has outer elements that use total internal reflection as well as refraction; it can capture more oblique light from a light source and add it to the beam of a lighthouse, making the light visible from greater distances. Description The Fresnel lens redu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Air Mass (solar Energy)
The air mass coefficient defines the direct optical path length through the Earth's atmosphere, expressed as a ratio relative to the path length vertically upwards, i.e. at the zenith. The air mass coefficient can be used to help characterize the solar spectrum after solar radiation has traveled through the atmosphere. The air mass coefficient is commonly used to characterize the performance of solar cells under standardized conditions, and is often referred to using the syntax "AM" followed by a number. "AM1.5" is almost universal when characterizing terrestrial power-generating panels. Description Solar radiation closely matches a black body radiator at about 5,800 K.or more precisely 5,777 K as reported iNASA Solar System Exploration - Sun: Facts & Figures retrieved 27 April 2011 "Effective Temperature ... 5777 K" As it passes through the atmosphere, sunlight is attenuated by scattering and absorption; the more atmosphere through which it passes, the greater ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solar Irradiance
Solar irradiance is the power per unit area (surface power density) received from the Sun in the form of electromagnetic radiation in the wavelength range of the measuring instrument. Solar irradiance is measured in watts per square metre (W/m2) in SI units. Solar irradiance is often integrated over a given time period in order to report the radiant energy emitted into the surrounding environment (joule per square metre, J/m2) during that time period. This integrated solar irradiance is called solar irradiation, solar exposure, solar insolation, or insolation. Irradiance may be measured in space or at the Earth's surface after atmospheric absorption and scattering. Irradiance in space is a function of distance from the Sun, the solar cycle, and cross-cycle changes.Michael Boxwell, ''Solar Electricity Handbook: A Simple, Practical Guide to Solar Energy'' (2012), p. 41–42. Irradiance on the Earth's surface additionally depends on the tilt of the measuring surface, the hei ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Direct Current
Direct current (DC) is one-directional flow of electric charge. An electrochemical cell is a prime example of DC power. Direct current may flow through a conductor such as a wire, but can also flow through semiconductors, insulators, or even through a vacuum as in electron or ion beams. The electric current flows in a constant direction, distinguishing it from alternating current (AC). A term formerly used for this type of current was galvanic current. The abbreviations ''AC'' and ''DC'' are often used to mean simply ''alternating'' and ''direct'', as when they modify ''current'' or ''voltage''. Direct current may be converted from an alternating current supply by use of a rectifier, which contains electronic elements (usually) or electromechanical elements (historically) that allow current to flow only in one direction. Direct current may be converted into alternating current via an inverter. Direct current has many uses, from the charging of batteries to large power sup ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MW·h
A kilowatt-hour (unit symbol: kW⋅h or kW h; commonly written as kWh) is a unit of energy: one kilowatt of power for one hour. In terms of SI derived units with special names, it equals 3.6 megajoules (MJ). Kilowatt-hours are a common billing unit for electrical energy delivered to consumers by electric utilities. Definition The kilowatt-hour is a composite unit of energy equal to one kilowatt (kW) sustained for (multiplied by) one hour. Expressed in the standard unit of energy in the International System of Units (SI), the joule (symbol J), it is equal to 3,600 kilojoules or 3.6 MJ."Half-high dots or spaces are used to express a derived unit formed from two or more other units by multiplication.", Barry N. Taylor. (2001 ed.''The International System of Units.'' (Special publication 330). Gaithersburg, MD: National Institute of Standards and Technology. 20. Unit representations A widely used representation of the kilowatt-hour is "kWh", derived from its compone ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moody's Investors Service
Moody's Investors Service, often referred to as Moody's, is the bond credit rating business of Moody's Corporation, representing the company's traditional line of business and its historical name. Moody's Investors Service provides international financial research on bonds issued by commercial and government entities. Moody's, along with Standard & Poor's and Fitch Group, is considered one of the Big Three credit rating agencies. It is also included in the Fortune 500 list of 2021. The company ranks the creditworthiness of borrowers using a standardized ratings scale which measures expected investor loss in the event of default. Moody's Investors Service rates debt securities in several bond market segments. These include government, municipal and corporate bonds; managed investments such as money market funds and fixed-income funds; financial institutions including banks and non-bank finance companies; and asset classes in structured finance. In Moody's Investors Service' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydroponics
Hydroponics is a type of horticulture and a subset of hydroculture which involves growing plants, usually crops or medicinal plants, without soil, by using water-based mineral nutrient solutions in aqueous solvents. Terrestrial or aquatic plants may grow with their roots exposed to the nutritious liquid or in addition, the roots may be mechanically supported by an inert medium such as perlite, gravel, or other substrates. Despite inert media, roots can cause changes of the rhizosphere pH and root exudates can affect rhizosphere biology and physiological balance of the nutrient solution by secondary metabolites. Transgenic plants grown hydroponically allow the release of pharmaceutical proteins as part of the root exudate into the hydroponic medium. The nutrients used in hydroponic systems can come from many different organic or inorganic sources, including fish excrement, duck manure, purchased chemical fertilizers, or artificial nutrient solutions. Plants are commonl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Juwi
The Juwi GmbH is a company which builds renewable power supply facilities. Founded by Fred Jung and Matthias Willenbacher in 1996, in Rhineland-Palatinate, Germany. The today's headquarters is in Wörrstadt. The name "juwi" is an acronym based on the initials of its two founders. In its early days Juwi was a two-man company. Today Juwi has over 900 employees and 900 million Euro revenue. Solar parks are built by Juwi, for example Waldpolenz Solar Park The Waldpolenz Solar Park is a 52-megawatt (MW) photovoltaic power station built by German developer and operator Juwi at a former military air base near Leipzig, Eastern Germany. When completed by the end of 2008, it was the world's largest .... References External links Official website of Juwi-USA* {{Official website, http://www.juwi.com/ Companies based in Rhineland-Palatinate Renewable energy technology companies ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johannesburg Stock Exchange
JSE Limited (previously the JSE Securities Exchange and the Johannesburg Stock Exchange) is the largest stock exchange in Africa. It is located in Sandton, Johannesburg, South Africa, after it moved from downtown Johannesburg in 2000. In 2003 the JSE had an estimated 473 listed companies and a market capitalisation of US$182.6 billion (€158 billion), as well as an average monthly traded value of US$6.399 billion (€5.5 billion). As of March 2022, the market capitalisation of the JSE was at US$1.36 trillion. History The discovery of gold on the Witwatersrand in 1886 led to many mining and financial companies opening and a need soon arose for a stock exchange. The first share transactions on the Rand took place in a rustic canvas tent, with trade taking place on Sundays, as this was the only day when mining was not allowed, owing to a strictly enforced regulation prohibiting the entry of African workers to the gold reefs. The ''Johannesburg Exchange & Chambers Company'' was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Special Purpose Vehicle
A special-purpose entity (SPE; or, in Europe and India, special-purpose vehicle/SPV; or, in some cases in each EU jurisdiction, FVC, financial vehicle corporation) is a legal entity (usually a limited company of some type or, sometimes, a limited partnership) created to fulfill narrow, specific or temporary objectives. SPEs are typically used by companies to isolate the firm from financial risk. A formal definition is "The Special Purpose Entity is a fenced organization having limited predefined purposes and a legal personality". Normally a company will transfer assets to the SPE for management or use the SPE to finance a large project thereby achieving a narrow set of goals without putting the entire firm at risk. SPEs are also commonly used in complex financings to separate different layers of equity infusion. Commonly created and registered in tax havens, SPEs allow tax avoidance strategies unavailable in the home district. Round-tripping is one such strategy. In addition, th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Concentrix Solar
Concentrix Solar GmbH was a German solar power company based in Freiburg, Germany that specialized in developing and commercializing concentrator photovoltaics (CPV) technology. In December 2009, Concentrix Solar was acquired by the French Soitec Group. In January 2015, Soitec announced its intention to exit from the CPV business, citing a lack of sales due to competition from lower-cost conventional photovoltaics. An agreed sale of the business to Chinese firm ConcenSolar (an entity having ties with Suncore Photovoltaics) in May 2015 was not completed. In January 2017, the technology and manufacturing assets were acquired by Saint-Augustin Canada Electric (a former General Electric subsidiary). History Concentrix Solar was founded in 2005, as a spin-off company of the Fraunhofer Institute for Solar Energy Systems ISE. Concentrix Solar builds large concentrator solar power plants suitable for sunny areas. In 2007, Concentrix Solar was awarded the Innovation Award of the Ger ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
_1.JPG "Click for more on -> Touws River (town)")
.jpg "Click for more on -> Johannesburg Stock Exchange")