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Neuchâtel Gas Turbine
The Neuchâtel gas turbine is the world's first electric power-generating gas turbine to go into commercial operation. It was designed and constructed by Brown, Boveri & Cie and installed in 1939 at the municipal power station in Neuchâtel, Switzerland. The gas turbine was in service as a standby unit from 1940 until its retirement in 2002. In recognition of its historical significance, the turbine was awarded "mechanical landmark" status by the American Society of Mechanical Engineers (ASME) in 1988. In 2007, the Neuchâtel gas turbine was restored and put on display at Alstom's facility in Birr, Switzerland. Design and development Brown, Boveri & Cie (BBC) first became involved with gas turbines when they began building turbo-compressors in collaboration with the French industrialist Auguste Rateau. The first machine built under this agreement was a 25 impeller, three casing centrifugal compressor for the experimental 1906 Armengaud-Lemale gas turbine. BBC worked on a nu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gas Turbine
A gas turbine or gas turbine engine is a type of Internal combustion engine#Continuous combustion, 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 electric ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Humphrey Pump
The Humphrey pump is a large internal combustion gas-fueled liquid piston pump. The pump was invented by H. A. Humphrey and first presented in paper to the Institution of Mechanical Engineers on 19 November 1909. A pump capable of pumping 250,000 gallons per hour to a head of 35 feet was exhibited at the 1910 Brussels Exhibition, where it was awarded two ''Grands Prix'', for both engines and pumps. A small number of pumps were built between 1906 and 1925 for use in large-scale water supply projects. Although only a few pumps were built, some continued in service into the 1960s. Operation Humphrey's pump consists of a large U-shaped tube, filled with water. One end is sealed by a heavy cast iron, or steel, 'combustion head'. The combustion head contains the inlet and exhaust valves, the ignition source and withstands the pressure of the combustion chamber. Water enters the pump through sprung inlet valves below the combustion chamber. A distinctive feature of the Humphrey pump, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
History Of Electrical Engineering
This article details the history of electrical engineering. Ancient developments Long before any knowledge of electricity existed, people were aware of shocks from electric fish. Ancient Egypt Ancient Egypt () was a cradle of civilization concentrated along the lower reaches of the Nile River in Northeast Africa. It emerged from prehistoric Egypt around 3150BC (according to conventional Egyptian chronology), when Upper and Lower E ...ian texts dating from 2750 BCE referred to these fish as the "Thunderer of the Nile", and described them as the "protectors" of all other fish. Electric fish were again reported millennia later by ancient Greek, Roman Empire, Roman and Science in the medieval Islamic world, Arabic naturalists and Islamic medicine, physicians. Several ancient writers, such as Pliny the Elder and Scribonius Largus, attested to the numbing effect of electric shocks delivered by electric catfish and electric rays, and knew that such shocks could travel along c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gas Turbines
A gas turbine or gas turbine engine 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). Greater thrust-to-w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zürich
Zurich (; ) is the list of cities in Switzerland, largest city in Switzerland and the capital of the canton of Zurich. It is in north-central Switzerland, at the northwestern tip of Lake Zurich. , the municipality had 448,664 inhabitants. The Urban agglomeration, urban area was home to 1.45 million people (2020), while the Zurich Metropolitan Area, Zurich metropolitan area had a total population of 2.1 million (2020). Zurich is a hub for railways, roads, and air traffic. Both Zurich Airport and Zürich Hauptbahnhof, Zurich's main railway station are the largest and busiest in the country. Permanently settled for over 2,000 years, Zurich was founded by the Roman Empire, Romans, who called it '. However, early settlements have been found dating back more than 6,400 years (although this only indicates human presence in the area and not the presence of a town that early). During the Middle Ages, Zurich gained the independent and privileged status of imperial immediacy and, in 1519 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aurel Stodola
Aurel Boleslav Stodola (11 May 1859 – 25 December 1942) was a Slovak engineer, physicist, and inventor. He was a pioneer in the area of technical thermodynamics and its applications and published his book ''Die Dampfturbine'' (the steam turbine) in 1903. In addition to the thermodynamic issues involved in turbine design the book discussed aspects of fluid flow, vibration, stress analysis of plates, shells and rotating discs and stress concentrations at holes and fillets. Stodola was a professor of mechanical engineering at the Swiss Polytechnical Institute (now ETH) in Zurich. He maintained friendly contact with Albert Einstein. In 1892, Stodola founded the Laboratory for Energy Conversion. Biography Aurel Stodola was born in Vrbica-Hušták (now a part of region Liptovský Mikuláš), in the Kingdom of Hungary (now in Slovakia) on 11 May 1859. His father Ondrej Stodola was a leather manufacturer. His mother was Anna (born Kováčová). He was baptized as Aurel Bohuslav, bu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baden, Switzerland
Baden (German language, German for "Thermal bath, baths"), sometimes unofficially, to distinguish it from Baden (other), other Badens, called Baden bei Zürich ("Baden near Zürich") or Baden im Aargau ("Baden in the Aargau"), is a town and a Municipalities of Switzerland, municipality in Switzerland. It is the main town or seat of the Baden (district, Aargau), district of Baden in the Cantons of Switzerland, canton of Aargau. Located northwest of Zürich in the Limmat Valley () mainly on the western side of the river Limmat, its mineral hot springs have been famed since at least the Switzerland in the Roman era, Roman era. Its official language is (the Swiss variety of Standard) Swiss Standard German, German, but the main spoken language is the local Alemannic German, Alemannic Swiss German (linguistics), Swiss-German dialect. the town had a population of over 19,000. Geography Downtown Baden is located on the left bank of the river Limmat in Limmat Valley, its eponym ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brayton Cycle
The Brayton cycle, also known as the Joule cycle, is a thermodynamic cycle that describes the operation of certain heat engines that have air or some other gas as their working fluid. It is characterized by isentropic process, isentropic compression and expansion, and isobaric process, isobaric heat addition and rejection, though practical engines have adiabatic process, adiabatic rather than isentropic steps. The most common current application is in airbreathing jet engines and gas turbine engines. The engine cycle is named after George Brayton (1830–1892), the American engineer, who developed the Brayton Ready Motor in 1872, using a piston compressor and piston expander. An engine using the cycle was originally proposed and patented by Englishman John Barber (engineer), John Barber in 1791, using a reciprocating compressor and a turbine expander. There are two main types of Brayton cycles: closed and open. In a closed cycle, the working gas stays inside the engine. Heat i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Revolutions Per Minute
Revolutions per minute (abbreviated rpm, RPM, rev/min, r/min, or r⋅min−1) is a unit of rotational speed (or rotational frequency) for rotating machines. One revolution per minute is equivalent to hertz. Standards ISO 80000-3:2019 defines a physical quantity called ''rotation'' (or ''number of revolutions''), dimensionless, whose instantaneous rate of change is called ''rotational frequency'' (or ''rate of rotation''), with units of reciprocal seconds (s−1). A related but distinct quantity for describing rotation is ''angular frequency'' (or ''angular speed'', the magnitude of angular velocity), for which the SI unit is the radian per second (rad/s). Although they have the same dimensions (reciprocal time) and base unit (s−1), the hertz (Hz) and radians per second (rad/s) are special names used to express two different but proportional ISQ quantities: frequency and angular frequency, respectively. The conversions between a frequency and an angular frequency ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eugene Houdry
Eugène Jules Houdry ( Domont, France, April 18, 1892 – Upper Darby Township, Pennsylvania, July 18, 1962) was a mechanical engineer who graduated from École Nationale Supérieure d'Arts et Métiers in 1911. Houdry served as a lieutenant in a tank company in the French Army during World War One, receiving the French Legion of Honour. He helped innovate catalytic cracking of petroleum feed stocks, for which he received the Perkin Medal among others. Life Eugene Jules Houdry was born on April 18, 1892, at Domont, France near Paris. His parents were Jules Houdry and Émilie Thias Jule Lemaire. His father owned a successful business that manufactured structural steel. Houdry studied mechanical engineering at the École des arts et métiers in the Paris suburb of Chalons-sur-Marne. He graduated first in his class in 1911, earning a gold medal from the French government as the highest-ranking scholar in his class. He also captained his school's soccer team, winning the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marcus Hook, Pennsylvania
Marcus Hook is a Borough (Pennsylvania), borough in Delaware County, Pennsylvania, Delaware County, Pennsylvania, United States. The population was 2,397 at the 2010 United States Census, 2010 census. The current mayor is Gene Taylor. The borough calls itself "The Cornerstone of Pennsylvania". The 2005 film One Last Thing..., ''One Last Thing''... was set and partially filmed in Marcus Hook. History Pre-settlement The earliest inhabitants of Marcus Hook were members of the Lenape Native Americans in the United States, Native American tribe and their indigenous ancestors, whose succeeding cultures occupied present-day Marcus Hook and surrounding areas for thousands of years. 17th century The Lenape had a major settlement in Marcus Hook; New Sweden colonists established a trading post here in the 1640s. The village was called ''Chammassungh'', or "Finland" by the Swedes. It was located on the west side of the Delaware River, between Marcus Hook Creek and Naamans Creek. Dutch colo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
