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Topic: Ericsson cycle

	Ericsson cycle - Wikipedia, the free encyclopedia
		The Ericsson cycle is very similar to what we now call the "Brayton Cycle" exept that it is externally heated and usually has a recuperator or regenerator between the compressor and the expander.
		The Ericsson cycle is often compared to the Stirling Cycle because of it's external combustion capabilities, and the equivalent efficiency.
		The "Brayton Cycle" is now known as the gas turbine cycle, which differs from the original "Brayton Cycle" in the use of a turbine compressor and expander.
	en.wikipedia.org /wiki/Ericsson_Cycle (435 words)

	Atkinson cycle - Wikipedia, the free encyclopedia
		The Atkinson cycle engine is a type of Internal combustion engine invented by James Atkinson in 1882.
		The Atkinson cycle allows the intake, compression, power, and exhaust strokes of the four-stroke cycle to occur in a single turn of the crankshaft.
		In all of these vehicles, the lower power level of the Atkinson cycle engine is compensated for through the use of electric motors in a hybrid electric drive train.
	en.wikipedia.org /wiki/Atkinson_cycle (514 words)

	YourArt.com >> Encyclopedia >> Cycle (Site not responding. Last check: 2007-10-16)
		Citric acid cycle, Kreb's cycle, the Born Haber cycle or the Calvin cycle.
		The cycle is a unit of phase angle equivalent to one oscillation, or 2Ï radians.
		In astrophysics, the CNO cycle is a sequence of nuclear reactions whose net effect is fusion.
	www.yourart.com /research/encyclopedia.cgi?subject=/Cycle (416 words)

	Environment & Sustainability
		Ericsson has for many years been one of the leading companies in our industry in assessing life cycle impacts, and has perhaps the most advanced and complete data system in the telecom industry.
		Environmental life cycle assessment (LCA) is a technique for assessing the environmental aspects and potential impacts associated with a product or a service from "cradle to grave." LCA studies the environmental impacts throughout the life cycle of the study object, from raw material acquisition through production, use and disposal.
		Ericsson was one of the first companies in the industry to establish "Supplier Environmental Requirements", which contain a number of concrete objectives to which all major suppliers must conform.
	www.ericsson.com /ericsson/corporate_responsibility/environ_sustain/index.shtml (1528 words)

	Ericsson Cycle: Facts and details from Encyclopedia Topic (Site not responding. Last check: 2007-10-16)
		John ericsson (july 31, 1803 - march 8, 1889) was a swedish inventor and mechanical engineer, as was his brother, nils ericson....
		The brayton cycle is a cyclic process generally associated with the gas turbine....
		And a Brayton cycle with regeneration and an infinite number of stages of intercooling and reheat is equivalent to Ericsson.
	www.absoluteastronomy.com /encyclopedia/e/er/ericsson_cycle.htm (794 words)

	Seeing The Light - John Ericssson - Maritime design genius
		Ericsson was not deterred by the failure of the Caloric engine powered ship and continued to work on improving his Caloric engine concept, and was awarded patents for a number of improvements during the years 1855-1858.
		Ericsson's inventions revolutionized navigation and the construction of warships including his ship The Destroyer (1878), which was designed to launch submarine torpedoes.
		The Ericsson continued to work the Great Lakes until late 1963, when she was offered-up for use as a maritime museum in Toronto, and then moved to Hamilton.
	www.terrypepper.com /lights/closeups/ericsson/ericsson.htm (1189 words)

	Cycle - Biocrawler (Site not responding. Last check: 2007-10-16)
		The Rabi cycle is a term in quantum optics.
		Citric acid cycle, the Born Haber cycle or the Calvin cycle.
		A cycle and a Hamiltonian cycle in graph theory.
	www.biocrawler.com /encyclopedia/Cycle (401 words)

	Magnetic refrigerator and refrigeration method - Patent 4785636
		The magnetic Ericsson cycle is constructed of a series of stages consisting of an isothermal stage at a high temperature T.sub.H (A.fwdarw.B), an isofield stage for the magnetic field H.sub.2 (B.fwdarw.C), an isothermal stage at a low temperature T.sub.C (C.fwdarw.D), and an isofield stage for the magnetic field H.sub.1 (D.fwdarw.A).
		The discharged quantities of heat to outside at an isothermal stage are indicated by Q.sub.H1 and Q.sub.H2, the absorptive quantities of heat from outside at an isothermal stage are indicated by Q.sub.C1 and Q.sub.C2, and the state of the streams of heat through anisotropic heat paths is indicated by Q.sub.ti.
		8, in case of the magnetic Ericsson cycle, the intensity of the magnetic field of the high field device 8 may be constant, but in case of the magnetic Stirling cycle, a magnet or the like with its field intensity changed so as to establish constant magnetization is used as the high field device 8.
	www.freepatentsonline.com /4785636.html (3242 words)

	CEC USA (Site not responding. Last check: 2007-10-16)
		To be reversible, the Stirling and the Ericsson cycle need refrigerants with equal specific heats of the high and the low pressure stream.
		A new refrigeration cycle, as was mentioned already in [1], with consecutive expansion (work extracting) and heat transfer steps of the high pressure stream, has been identified as a modified Ericsson cycle.
		With neon as a refrigerant for the 40 K temperature level, the influence of losses (non-ideal heat transfer and non-ideal expansion) on the cycle efficiency is shown.
	www.tu-dresden.de /mwiem/kkt/mitarbeiter/lib/Ole/usa.html (1475 words)

	charge: the future of energy: WILL ADVANCED ENGINES BE THE ANSWER?
		John Ericsson, sometimes known as the Swedish Edison, was an internationally renowned nineteenth century inventor best known for his patent on the screw propeller and his design of the Union Monitor, the forerunner of the modern battleship.
		Ericsson made numerous other inventions, however, and among the most interesting was his “caloric engine”, as he called it, which went through several iterations and upon which he was still hard at work at the time of his death.
		The Ericsson is not necessarily a closed cycle system, and does not require a displacer to move air from the hot to the cold side of the engines.
	chargezine.blogspot.com /2005/07/will-advanced-engines-be-answer.html (2139 words)

	Supplier environmental requirements (Site not responding. Last check: 2007-10-16)
		Ericsson's life cycle assessment studies indicate that our business impacts the environment primarily through energy consumption and the generation of hazardous waste.
		Ericsson has issued a Code of Conduct to all suppliers, covering requirements in the areas of basic human rights, labor standards, environmental management and anti-corruption in the workplace.
		Ericsson's lists of banned and restricted substances (pdf) there must be a plan for phasing out the substance.
	www.ericsson.com /ericsson/corporate_responsibility/suppliers/environ_req.shtml (474 words)

	Heat engine: Encyclopedia topic (Site not responding. Last check: 2007-10-16)
		Carnot cycle (Carnot cycle: A cycle (of expansion and compression) of an idealized reversible heat engine that does work without loss of heat) (Carnot heat engine (Carnot heat engine: a heat engine is an engine that uses heat to produce mechanical work by carrying a working...
		Brayton cycle (Brayton cycle: the brayton cycle is a cyclic process generally associated with the gas turbine....
		Stirling cycle (Stirling cycle: the stirling engine, also known as the hot air engine, is a heat engine of the...
	www.absoluteastronomy.com /reference/heat_engine (894 words)

	EricssonCaloricEngine
		Ericsson built a more successful engine which worked on a closed cycle with external heating.
		Ericsson settled in New York where he built, between 1840 to 1850, eight experimental engines using wire gauze regenerators.
		Ericsson was not discouraged by the failure of the caloric shipand patented a number of improvements during the years 1855-1858.
	www.genuineideas.com /HallofInventions/SolarFerrisWheel/ericssonengine.htm (657 words)

	Engineering Thermodynamics: Problems and Solutions, Chapter-8
		The minimum and maximum temperatures in the cycle are 300 K and 1100 K, and the pressure of air at the compressor exit is 9 times the value at the compressor inlet.
		The minimum and maximum temperatures of the cycle are 300 and 1200 K. The adiabatic efficiencies of the turbine and the compressor are 80% and 82% respectively.
		Determine (a) the temperature and pressure of the gases at the turbine exit, (b) the velocity of the gases nozzle exit, and (c) the propulsive efficiency of the cycle.
	www.usc.edu /mirror/testcenter/testhome/Test/problems/chapter08/chapter08.html (3360 words)

	Light Cycle Mobile Game Review (Java/J2ME)
		Light Cycle is similar to Snake: there are two or more cycles leaving a trail; by hitting a trail you lose one live.
		The first time you win a match, the opponent cycle becomes faster, the second time you win a second opponent is added, the third time you win both opponents become faster, the fourth time you win you have to drive against 3 opponents also becoming faster, after you have won the fifth race.
		Steering your cycle is not always easy; from time to time you crash into the walls surrounding the area or into the trails, because the controlling does not react quickly enough.
	www.midlet-review.com /index?content=review&id=69&rel=j2me (283 words)

	RAND \| Reports \| Ericsson cycle gas turbine powerplants
		The cycle approximates an Ericsson cycle and uses stepwise expansions in turbines with intervening reheat and stepwise compression with intervening intercooling.
		At a peak cycle temperature of 1500 deg F, and using five stages of compression and expansion, a 50 percent thermal efficiency is attainable with previously demonstrated component performance.
		The cycle is not complicated in comparison with advanced gas turbine/steam turbine cycles now being considered for high-efficiency fossil-fuel-fired plants.
	www.rand.org /pubs/reports/R2327 (310 words)

	[No title] (Site not responding. Last check: 2007-10-16)
		Apparatus 200 is driven by motor 201, mechanically coupled by gearbox 202 and shaft 203 to adsorber rotor 204, by gearbox 206 and shaft 207 to feed pumps 208 and 209 in tandem, and by gearbox 216 and shaft 217 to exhaust feed pumps 218 and 219 in tandem.
		The angular velocity of rotor 601 is one half of the PSA cycle frequency, and the angular oscillations of vane rotor 605 (relative to its average angular velocity) are at exactly the PSA cycle frequency.
		The oscillation of vane rotor 605 (at cycle frequency) relative to rotor 601 may be established by a cascaded set of noncircular gears, or alternatively by an electric stepper motor drive.
	www.wipo.int /cgi-pct/guest/getbykey5?KEY=99/01202.990114&ELEMENT_SET=DECL (8423 words)

	Proe Power Systems - Afterburning Ericsson Cycle Engine - Stirling Engines Aren't the Answer - Fuel Cells Aren't the ...
		The carbon portion of the fuel cannot be used by the fuel cell stack and is wasted by being exhausted from the reformer as carbon dioxide.
		An open cycle, such as the Ericsson cycle and standard car and truck engines, receives a fresh charge of cold air and exhausts warm air during each cycle.
		The closed Stirling cycle also has to reject a corresponding amount of heat, but lacking a fresh air intake and exhaust, must reject all that additional heat through the engine walls.
	www.proepowersystems.com /PROEHOME.HTM (1741 words)

	Department Of Power Generation
		The cycle operates in the largest possible range of temperatures compatible with the materials and cooling techniques currently available, namely 30 to 40°C at the lower part where the intercoolers are and1300°C on the upper part, corresponding to the present turbine inlet temperature (TIT) of the most advanced gas turbines.
		The cycle is regenerative and the sensible heat of the exhaustgases may be recovered either internally, then we have the CO2 gas cycle shown on Fig.
		It is designed as a regenerative Ericsson-like cycle with 2 nearly isothermal processes (a staged compressor with intercoolers and a staged expansion with a reheat) and 2 nearly isobaric processes (in the regenerator, in the 2 combustion chambers, and in the cooling of the flue gas down to the compressor inlet temperature).
	www.ulg.ac.be /genienuc/publicat.htm (8735 words)

	Articles - Heat engine (Site not responding. Last check: 2007-10-16)
		In these cycles and engines the working fluids are gases and liquids.
		Since, by the second law of thermodynamics, this is forbidden, the Carnot efficiency is a theoretical upper bound on the efficiency of ´´any´´ process.
		This is due to the fact that ´´any´´ transfer of heat between two bodies at differing temperatures is irreversible, and therefore the Carnot efficiency expression only applies in the infinitesimal limit.
	www.centralairconditioners.net /articles/Heat_engine (826 words)

	steam (Site not responding. Last check: 2007-10-16)
		They use the expansion an contraction of air to produce mechanical work, but unlike the Stirling, they do not require a separate linkage to drive the displacer, as it is fixed to the top of the power piston and moves with it.
		The air is alternately heated then cooled by moving it from the hot side of the engine to the cold side by means of a displacer and the resulting rises and falls in internal pressure do work against a piston.
		One of the most prolific was John Ericsson who's name has been perpetuated in the Ericsson cycle engine.
	www.geocities.com /kenboak/steam.html (1258 words)

	Green Car Congress: Scuderi Group Developing Air-Hybrid Implementation of its Split-Cycle Engine
		The Scuderi Group, a company that designed and is developing a new internal combustion engine based on dividing the conventional four-stroke engine cycle across two paired cylinders, is enhancing that basic design with the addition of an air-hybrid capability.
		As I recall, the genius of the internal combustion engine is that combustion is not continuous but is part of a cycle of gas flow which includes much cooler temperatures.
		This allows the mechanism to be made from inexpensive materials (iron, steel alloys, aluminum, etc.) which could not withstand constant exposure to the instantaneous temperatures achieved during the explosion of the fuel mixture.
	www.greencarcongress.com /2006/03/scuderi_group_d.html (1804 words)

	Journal of Non-Equilibrium Thermodynamics - Abstract (Site not responding. Last check: 2007-10-16)
		The Ericsson refrigeration cycle working with an ideal Bose gas is called the Bose Ericsson refrigeration cycle.
		The effect of quantum degeneracy on the performance of the cycle is investigated, based on the thermodynamic properties of an ideal Bose gas.
		The inherent regenerative losses of the cycle are analyzed, and the coefficient of performance and the refrigeration load of the cycle are calculated.
	www.degruyter.de /journals/jnet/abs/11228.html (121 words)

	John Ericssn (Site not responding. Last check: 2007-10-16)
		Although Ericsson claimed priority of invention for this form of regeneration it was in fact patented by Robert Stirling in 1816.
		This experiment was not the success Ericsson had hoped for.
		This machine was not perfected since Ericsson left England for America the following year.
	www.stirlingengines.org.uk /pioneers/pion4.html (313 words)

	Submerged Archimedes Screw Heat Engine Air Compressor - Renewable Energy Design
		The second Ericsson Cycle consists of two isothermal (constant temperature) stages and two isochoric (constant pressure) stages.
		To realize the Ericsson Cycle (isothermal compression, isochoric heating, isothermal expansion, isochoric cooling), two screws of opposite sense of rotation (so one pumps air downward while the other permits it to rise) are rigidly connected, built one inside the other.
		The countercurrent heat exchanger consists of a series of large low-pressure tanks (because the low pressure air occupies a large volume) through which the high-pressure air moves in coils of small diameter thick-wall copper pipes.
	renewableenergy.wikia.com /wiki/Submerged_Archimedes_Screw_Heat_Engine_Air_Compressor (2465 words)

	Philosophy Forum -> Stirling Engine?
		The Stirling cycle also has four cycles and two are constant temperature ones, and in perfection achieves Carnot cycles efficiency, but the similarity ends there.
		Of the three engine types, the efficiencies are all the same for the same heat supplied at the same temperature, and the areas of the PV (pressure-volume) diagrams are all equal.
		The Stirling and Carnot cycles have the same maximum volumes, and thus the same piston displacements, although the Stirling engine normally runs at lower pressures, and thus should be lighter.
	forum.darwinawards.com /index.php?showtopic=2599 (7797 words)

	Electrothermodynamic (ETD) power converter - Patent 4395648
		A method IV for the conversion of heat to electric power containing a gas circulating in a Marks/Ericsson electrothermodynamic cycle according to claim 2, in which said first fluid is selected from the class of liquid metals consisting of mercury, tin, gallium, gallium/niobium 93/7.
		In this cycle a cross flow heat exchanger is employed with the circulating gas between an ETD generator and an ETD compressor.
		The analysis demonstrates the validity of the gas flywheel concept, showing ranges of the coefficients and parameters and their relationships; and correlates the behavior of the ejector, ETD converter, and the circulation of the fill gas, as the coefficients and parameters are varied.
	www.freepatentsonline.com /4395648.html (14427 words)

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