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Encyclopedia > Ericsson cycle
Thermodynamic cycles
Atkinson cycle
Brayton/Joule cycle
Carnot cycle
Diesel cycle
Ericsson cycle
Hirn cycle
Kalina cycle
Linde-Hampson cycle
Miller cycle
Otto cycle
Rankine cycle
Stirling cycle
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The Ericsson Cycle is named after John Ericsson. 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. In engineering and thermodynamics, a heat engine performs the conversion of heat energy to mechanical work by exploiting the temperature gradient between a hot source and a cold sink. Heat is transferred to the sink from the source, and in this process some of the heat is converted into work. ... The Atkinson cycle engine is a type of Internal combustion engine invented by James Atkinson in 1882. ... The Brayton cycle is a cyclic process generally associated with the gas turbine. ... The Carnot heat engine uses a particular thermodynamic cycle studied by Nicolas Léonard Sadi Carnot in the 1820s and expanded upon by Benoit Paul Émile Clapeyron in the 1830s and 40s. ... The Diesel cycle is the combustion process of a type of internal combustion engine, in which the burning of the fuel is triggered by the heat generated in first compressing air in the piston cavity, into which is then injected the fuel - as opposed to it being ignited by a... The Kalina cycle is a thermodynamic cycle for converting thermal energy to mechanical power which utilizes working fluid comprised of at least two different components and a ratio between those components is varied in different parts of the system to increase thermodynamical reversibility and therefore increase overall thermodynamic efficiency. ... In engineering, the Miller cycle is a combustion process used in a type of four-stroke internal combustion engine. ... The four-stroke cycle (or Otto cycle) of an internal combustion engine is the cycle most commonly used for automotive and industrial purposes today (cars and trucks, generators, etc). ... The Rankine cycle is a thermodynamic cycle. ... A Stirling engine and generator set with 55 kW electrical output, for combined heat and power applications. ... Illustration of John Ericsson 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. ... The Stirling engine is a type of hot air engine, invented in 1816 by the Rev. ...


Barber was the first to propose a similar engine in 1791 but the Barber engine lacked a regenerator/ recuperator. Ericsson invented and patented his engine in 1833 (number 6409/1833 British). This was 18 years before Joule and 43 years before Brayton. What Joule contributed to this cycle was nothing and his version is clearly inferior. What Brayton added was internal combustion to an open form of the first Ericsson Cycle, and clearly is an improvement. Brayton accomplished the improvement with pistons and cylinders. 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. The gas turbine cycle is used for all modern gas turbine and turbojet engines. Ericsson eventually abandon the open cycle in favor of the traditional colsed Stirling cycle. The joule (symbol: J) is the SI unit of energy, or work with base units of kg·m²/s² (N·m). ... Brayton is a small village just south of the Town of Selby in North Yorkshire. ... The joule (symbol: J) is the SI unit of energy, or work with base units of kg·m²/s² (N·m). ... Brayton is a small village just south of the Town of Selby in North Yorkshire. ... Brayton is a small village just south of the Town of Selby in North Yorkshire. ... The Brayton cycle is a cyclic process generally associated with the gas turbine. ... This machine has a single-stage radial compressor and turbine, a recuperator, and foil bearings. ... The Brayton cycle is a cyclic process generally associated with the gas turbine. ... This machine has a single-stage radial compressor and turbine, a recuperator, and foil bearings. ... This machine has a single-stage radial compressor and turbine, a recuperator, and foil bearings. ... Turbojets are the simplest and oldest kind of general purpose jet engine. ...


At one point an Ericsson cycle engine was used to power a 2000 ton ship, The Caloric Ship Ericsson and the engine ran flawlessly for 73 hours. The combination engine produced about 300 horsepower. It had a combination of 4 2-piston engines; the larger, the expansion piston/cylinder, being 4.267 meters or 14 feet in diameter--perhaps the largest piston diameter of any engine ever built. Rumor has it that tables were placed on top of those pistons and dinner was served and eaten, while the engine was running at full power. At 6.5 Rpm the pressure was limited to 8 psi.


Ericsson was also the inventor of the propeller

Cycle/Process Compression Heat Addition Expansion Heat Rejection
Ericsson (First, 1833) adiabatic isobaric adiabatic isobaric
Ericsson (Second, 1853) isothermal isobaric isothermal isobaric
Brayton (Turbine) adiabatic isobaric adiabatic isobaric

So Ericsson's second cycle has two efficiency wins over Brayton: isothermal compression and expansion produces more net work than adiabatic, and regeneration reduces heat input. Ericsson coined the term "regenerator". This article covers adiabatic processes in thermodynamics. ... isobaric (meaning of the same weight or pressure) may refer to: in thermodynamics, an isobaric process, i. ... This article covers adiabatic processes in thermodynamics. ... isobaric (meaning of the same weight or pressure) may refer to: in thermodynamics, an isobaric process, i. ... An isothermal process is a thermodynamic process in which the temperature of the system stays constant; ΔT = 0. ... isobaric (meaning of the same weight or pressure) may refer to: in thermodynamics, an isobaric process, i. ... An isothermal process is a thermodynamic process in which the temperature of the system stays constant; ΔT = 0. ... isobaric (meaning of the same weight or pressure) may refer to: in thermodynamics, an isobaric process, i. ... This article covers adiabatic processes in thermodynamics. ... isobaric (meaning of the same weight or pressure) may refer to: in thermodynamics, an isobaric process, i. ... This article covers adiabatic processes in thermodynamics. ... isobaric (meaning of the same weight or pressure) may refer to: in thermodynamics, an isobaric process, i. ... In biology, regeneration is the ability to recreate lost or damaged tissues, organs and limbs. ... A Stirling engine and generator set with 55 kW electrical output, for combined heat and power applications. ...


For comparisons with other cycles, see Heat engine. In engineering and thermodynamics, a heat engine performs the conversion of heat energy to mechanical work by exploiting the temperature gradient between a hot source and a cold sink. Heat is transferred to the sink from the source, and in this process some of the heat is converted into work. ...


References

  • Ericsson's patents. 1833 British and 1851 USA
  • THE EVOLUTION OF THE HEAT ENGINE, by: IVO KOLIN Published Moriya Press, 1972 by Longman

  Results from FactBites:
 
Ericsson cycle - Wikipedia, the free encyclopedia (435 words)
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.
Atkinson cycle - Wikipedia, the free encyclopedia (514 words)
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.
  More results at FactBites »


 

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