|
Indicator Diagram
An indicator diagram is a chart used to measure the thermal, or cylinder, performance of Reciprocating engine, reciprocating steam and Internal combustion engine, internal combustion engines and compressors. An indicator chart records the pressure in the cylinder versus the volume swept by the piston, throughout the two or four strokes of the piston which constitute the engine, or compressor, cycle. The indicator diagram is used to calculate the work (thermodynamics), work done and the power produced in an engine cylinder or used in a compressor cylinder. The indicator diagram was developed by James Watt and his employee John Southern (engineer), John Southern to help understand how to improve the Energy conversion efficiency, efficiency of steam engines. In 1796, Southern developed the simple, but critical, technique to generate the diagram by fixing a board so as to move with the piston, thereby tracing the "volume" axis, while a pencil, attached to a pressure gauge, moved at ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Davies Gilbert
Davies Gilbert (born Davies Giddy, 6 March 1767 – 24 December 1839) was a British engineer, author, and politician. He was elected to the Royal Society on 17 November 1791 and served as its President from 1827 to 1830. He changed his name to Gilbert in 1817 and served as Member of Parliament, first for Helston in Cornwall and then for Bodmin. Biography Davies Giddy was born on 6 March 1767, the second of the three children of Reverend Edward Giddy, curate of St Erth's Church, and his wife Catherine, daughter of Henry Davies of Tredrea, St Erth in Cornwall. His parents' first child, also Davies by forename, died within 24 hours of birth in 1766, and their third child, Mary Philippa Davies Giddy (known as Philippa) was born in 1769. The Giddy family moved to Penzance, living on Chapel Street in 1775, until Giddy's mother Catherine inherited the family home of Tredrea back in St Erth. By 1780 the family returned to St Erth, and Davies was taught by his father, alongside his sist ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pressure–volume Diagram
A pressure–volume diagram (or PV diagram, or volume–pressure loop) is used to describe corresponding changes in volume and pressure in a system. It is commonly used in thermodynamics, cardiovascular physiology, and respiratory physiology. PV diagrams, originally called indicator diagrams, were developed in the 18th century as tools for understanding the efficiency of steam engines. Description A PV diagram plots the change in pressure ''P'' with respect to volume ''V'' for some process or processes. Typically in thermodynamics, the set of processes forms a cycle, so that upon completion of the cycle there has been no net change in state of the system; i.e. the device returns to the starting pressure and volume. The figure shows the features of an idealized PV diagram. It shows a series of numbered states (1 through 4). The path between each state consists of some process (A through D) which alters the pressure or volume of the system (or both). A key feature of the diagr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SR Lord Nelson 850, With Indicator Shelter (CJ Allen, Steel Highway, 1928)
SR or sr may refer to: Arts and entertainment * ''Science Reporter'', a magazine * '' "Sr."'', a 2022 film featuring Roberts Downey Jr. and Sr. Businesses and organizations Politics * Socialist Revolutionary Party, Russia, 1902–1941 * A Just Russia (''Spravedlivaya Rossiya''), a political party formed in 2006 Transport * Southern Railway (UK) * Southern Railway (U.S.) * Swissair (IATA airline code SR) * Southern Railway zone, India * SR Corporation, a South Korean rail operator Other businesses and organizations * Sørvágs Róðrarfelag, a Faroese rowing association * Saarländischer Rundfunk, a German broadcaster * Sveriges Radio, a Swedish broadcaster Honorifics * Senior (Sr.), a generational title suffix to a man's name * Religious sister (Sr.), in Catholicism Places * Slovak Republic (), the official name of Slovakia * Suriname (ISO 3166-1 country code SR) * West Sulawesi (ISO 3166-2:ID province code SR), a province of Indonesia Science and technology Biology and med ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nicholas Procter Burgh
Nicholas Procter Burgh (1834–1900)Nicholas Proctor Burgh at Graces Guide. Retrieved 06.2015. was a British marine engineer, known for his work on marine engines, , screw propulsion, boilers and boiler-making, and the . Live and work Born in |
Thermodynamics
Thermodynamics is a branch of physics that deals with heat, Work (thermodynamics), work, and temperature, and their relation to energy, entropy, and the physical properties of matter and radiation. The behavior of these quantities is governed by the four laws of thermodynamics, which convey a quantitative description using measurable macroscopic physical quantity, physical quantities but may be explained in terms of microscopic constituents by statistical mechanics. Thermodynamics applies to various topics in science and engineering, especially physical chemistry, biochemistry, chemical engineering, and mechanical engineering, as well as other complex fields such as meteorology. Historically, thermodynamics developed out of a desire to increase the thermodynamic efficiency, efficiency of early steam engines, particularly through the work of French physicist Nicolas Léonard Sadi Carnot, Sadi Carnot (1824) who believed that engine efficiency was the key that could help France win ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carnot Cycle
A Carnot cycle is an ideal thermodynamic cycle proposed by French physicist Nicolas Léonard Sadi Carnot, Sadi Carnot in 1824 and expanded upon by others in the 1830s and 1840s. By Carnot's theorem (thermodynamics), Carnot's theorem, it provides an upper limit on the Thermal efficiency, efficiency of any classical Heat engine, thermodynamic engine during the conversion of heat into Work (thermodynamics), work, or conversely, the efficiency of a refrigeration system in creating a temperature difference through the application of work to the system. In a Carnot cycle, a Thermodynamic system, system or engine transfers energy in the form of heat between two thermal reservoirs at temperatures T_H and T_C (referred to as the hot and cold reservoirs, respectively), and a part of this transferred energy is converted to the work done by the system. The cycle is Reversible process (thermodynamics), reversible, and entropy is Conserved quantity, conserved, merely transferred between the th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pressure Volume Diagram
Pressure (symbol: ''p'' or ''P'') is the force applied perpendicular to the surface of an object per unit area over which that force is distributed. Gauge pressure (also spelled ''gage'' pressure)The preferred spelling varies by country and even by industry. Further, both spellings are often used ''within'' a particular industry or country. Industries in British English-speaking countries typically use the "gauge" spelling. is the pressure relative to the ambient pressure. Various units are used to express pressure. Some of these derive from a unit of force divided by a unit of area; the SI unit of pressure, the pascal (Pa), for example, is one newton per square metre (N/m2); similarly, the pound-force per square inch (psi, symbol lbf/in2) is the traditional unit of pressure in the imperial and US customary systems. Pressure may also be expressed in terms of standard atmospheric pressure; the unit atmosphere (atm) is equal to this pressure, and the torr is defined as of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Émile Clapeyron
Benoît Paul Émile Clapeyron (; 26 January 1799 – 28 January 1864) was a French engineer and physicist, one of the founders of thermodynamics. Life Born in Paris, Clapeyron studied at the École polytechnique, graduating in 1818. He also studied at École des mines. In 1820 he and Gabriel Lamé went to Saint Petersburg to teach and work at the school of public works there. He returned to Paris only after the Revolution of July 1830, supervising the construction of the first railway lines connecting Paris to Versailles and Paris to Saint-Germain. The half brothers Stéphane Mony and Eugène Flachat collaborated in this project, which was financed by Adolphe d'Eichthal( fr), Rothschild, Auguste Thurneyssen, Sanson Davillier and the Péreire brothers. Clapeyron took his steam engine designs to England in 1836 to find a manufacturer and engaged Sharp, Roberts and Co. From 1844 to 1859 Clapeyron was a professor at École des Ponts et Chaussées. Clapeyron married Mélanie B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Farey, Jr
John Farey Jr. (20 March 1791 – 17 July 1851) was an English mechanical engineer, consulting engineer and patent attorney, known for his pioneering contributions in the field of mechanical engineering. Alec Skempton.Farey, Jr., John" in: ''A Biographical Dictionary of Civil Engineers in Great Britain and Ireland: 1500–1830.'' 2002. p. 223-224 As consulting engineer Farey worked for many well-known inventors of the later Industrial Revolution, and was a witness to a number of parliamentary enquiries, inquests and court cases, and on occasion acted as an arbitrator. He was polymathic in his interests and contributed text and drawings to a number of periodicals and encyclopaedias. Farey is also remembered as the first English inventor of the ellipsograph, an instrument used by draughtsmen to inscribe ellipses. Biography Youth and education Born 20 March 1791, in Lambeth, Farey was the eldest son of John Farey Sr. (1766–1826), the geologist, and Sophia Hubert (1770–183 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quarterly Journal Of Science
''Quarterly Journal of Science'' was the title of two British scientific periodicals of the 19th century. The first was established in 1816 by William Thomas Brande, as the ''Quarterly Journal of Science, Literature and the Arts''. He edited it with John Millington and then Michael Faraday. To a large extent a vehicle for authors associated with the Royal Institution, it was taken over by the Institution in 1830, and then appeared as the ''Journal of the Royal Institution'', to 1832. In 1864, William Crookes Sir William Crookes (; 17 June 1832 – 4 April 1919) was an English chemist and physicist who attended the Royal College of Chemistry, now part of Imperial College London, and worked on spectroscopy. He was a pioneer of vacuum tubes, inventing ... started the ''Quarterly Journal of Science'' with James Samuelson. He edited it alone from 1870, and sold it in 1878, when the title was changed to ''Journal of Science'', a monthly appearing to 1885. References Defu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Daniel Bernoulli
Daniel Bernoulli ( ; ; – 27 March 1782) was a Swiss people, Swiss-France, French mathematician and physicist and was one of the many prominent mathematicians in the Bernoulli family from Basel. He is particularly remembered for his applications of mathematics to mechanics, especially fluid mechanics, and for his pioneering work in probability and statistics. His name is commemorated in the Bernoulli's principle, a particular example of the conservation of energy, which describes the mathematics of the mechanism underlying the operation of two important technologies of the 20th century: the carburetor and the aeroplane wing. Early life Daniel Bernoulli was born in Groningen (city), Groningen, in the Netherlands, into a Bernoulli family, family of distinguished mathematicians.Murray Rothbard, Rothbard, MurrayDaniel Bernoulli and the Founding of Mathematical Economics, ''Mises Institute'' (excerpted from ''An Austrian Perspective on the History of Economic Thought'') The Bernou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
