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This Timeline of heat engine technology describes how heat engines have been known since antiquity but have been made into increasingly useful devices since the seventeenth century as a better understanding of the processes involved was gained. They continue to be developed today.

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.

A heat pump is a heat engine run in reverse. Work is used to create a heat differential. The timeline includes devices classed as both engines and pumps, as well as identifying significant leaps in human understanding.

Pre Eighteenth century

  • Prehistory - The fire piston used by tribes in southeast Asia and the Pacific islands to kindle fire.
  • c. 450 BC - Archytas of Tarentum used a jet of steam to propel a toy wooden bird suspended on wire.[1]
  • c. 200 BC - Hero of Alexandria's Engine. Demonstrates rotary motion produced by the reaction from jets of steam.
  • c. 900s - China develops the earliest fire lances which were spear-like weapons combining a bamboo tube containing gunpowder and shrapnel like projectiles tied to a spear.
  • c 1100s - China , the earliest depiction of a gun showing a metal body and a tight-fitting projectile which maximises the conversion of the hot gases to forward motion.
  • 1120 - Gerbert, a professor in the schools at Rheims designed and built an organ blown by air escaping from a vessel in which it was compressed by heated water.
  • 1232 - First recorded use of a rocket. In a battle between the Chinese and the Mongols. ( see Timeline of rocket and missile technology for a view of rocket development through time.)
  • c. 1500 - Leonardo da Vinci builds the Architonnerre, a steam-powered cannon.
  • 1551 - Taqi al-Din demonstrates a steam turbine, used to rotate a spit.[2]
  • 1629 - Giovanni Branca demonstrates a steam turbine.
  • 1662 - Robert Boyle publishes Boyle's Law which defines the relationship between volume and pressure in a gas.
  • 1665 - Edward Somerset, the Second Marquess of Worcester builds a working steam fountain.
  • 1680 - Christiaan Huygens publishes a design for a piston engine powered by gunpowder but it is never built.
  • 1690 - Denis Papin - produces design for the first piston steam engine.
  • 1698 - Thomas Savery builds a pistonless steam-powered water pump for pumping water out of mines.

Eighteenth century

  • 1707 - Denis Papin - produces design for his second piston steam engine in conjunction with Gottfried Leibniz.
  • 1712 - Thomas Newcomen builds a piston-and-cylinder steam-powered water pump for pumping water out of mines
  • 1748 - William Cullen demonstrates the first artificial refrigeration at the University of Glasgow in Scotland.
  • 1759 - John Harrison uses a bimetallic strip in his third marine chronometer (H3) to compensate for temperature-induced changes in the balance spring.
  • 1769 - James Watt patents his first improved steam engine, see Watt steam engine
  • 1787 - Jacques Charles formulates Charles's law which describes the relationship between as gas's volume and temperature. He does not publish this however and it is not recognised until Joseph Louis Gay-Lussac develops and references it in 1802.
  • 1791 - John Barber patents the idea of a gas turbine.
  • 1799 - Richard Trevithick builds the first high pressure steam engine.

Nineteenth century

  • 1802 - Joseph Louis Gay-Lussac develops Gay-Lussac's law which describes the relationship between a gas's pressure and temperature.
  • 1807 - Nicéphore Niépce installed his 'moss, coal-dust and resin' fuelled Pyréolophore internal combustion engine in a boat and powered up the river Saone in France.
  • 1807 - Franco/Swiss engineer François Isaac de Rivaz built the De Rivaz engine, powered by the internal combustion of hydrogen and oxygen mixture and used it to power a wheeled vehicle.[3]
  • 1816 - Robert Stirling invented Stirling engine, a type of hot air engine.
  • 1824 - Nicolas Léonard Sadi Carnot developed the Carnot cycle and the associated hypothetical Carnot heat engine that is the basic theoretical model for all heat engines. This gives the first early insight into the second law of thermodynamics.
  • 1834 - Jacob Perkins, obtained the first patent for a vapor-compression refrigeration system.
  • 1850s - Rudolf Clausius sets out the concept of the thermodynamic system and positioned entropy as being that in any irreversible process a small amount of heat energy δQ is incrementally dissipated across the system boundary
  • 1859 - Etienne Lenoir developed the first commercially successful internal combustion engine, a single-cylinder, two-stroke engine with electric ignition of illumination gas (not gasoline).
  • 1861 - Alphonse Beau de Rochas of France originates the concept of the four-stroke internal-combustion engine by emphasizing the previously unappreciated importance of compressing the fuel–air mixture before ignition.
  • 1861 - Nikolaus Otto patents a two-stroke internal combustion engine building on Lenoir's.
  • 1872 - Pulsometer steam pump, a pistonless pump, patented by Charles Henry Hall. It was inspired by the Savery steam pump.
  • 1873 - The British chemist Sir William Crookes invents the light mill a device which turns the radiant heat of light directly into rotary motion.
  • 1877 - Theorist Ludwig Boltzmann visualized a probabilistic way to measure the entropy of an ensemble of ideal gas particles, in which he defined entropy to be proportional to the logarithm of the number of microstates such a gas could occupy.
  • 1877 - Nikolaus Otto patents a practical four-stroke internal combustion engine (U.S. Patent 194,047)
  • 1883 - Samuel Griffin of Bath UK patents a six-stroke internal combustion engine. [4]
  • 1884 - Charles A. Parsons builds the first modern Steam turbine.
  • 1886 - Herbert Akroyd Stuart builds the prototype Hot bulb engine, an oil fueled Homogeneous Charge Compression Ignition engine similar to the later diesel but with a lower compression ratio and running on a fuel air mixture.
  • 1892 - Rudolf Diesel patents the Diesel engine (U.S. Patent 608,845) where a high compression ratio generates hot gas which then ignites an injected fuel.

Twentieth century

  • 1909, the Dutch physicist Heike Kamerlingh Onnes develops the concept of enthalpy for the measure of the "useful" work that can be obtained from a closed thermodynamic system at a constant pressure.
  • 1913 - Nikola Tesla patents the Tesla turbine based on the Boundary layer effect.
  • 1926 - Robert Goddard of the USA launches the first liquid fuel rocket.
  • 1929 - Felix Wankel patents the Wankel rotary engine (U.S. Patent 2,988,008)
  • 1933 - French physicist Georges J. Ranque invents the Vortex tube , a fluid flow device without moving parts, that can separate a compressed gas into hot and cold streams.
  • 1937 - Hans von Ohain builds a gas turbine
  • 1940 - Hungarian Bela Karlovitz working for the Westinghouse company in the USA files the first patent for a magnetohydrodynamic generator, which can generate electricity directly from a hot moving gas
  • 1942 - R.S. Gaugler of General Motors patents the idea of the Heat pipe, a heat transfer mechanism that combines the principles of both thermal conductivity and phase transition to efficiently manage the transfer of heat between two solid interfaces.
  • 1950s - The Philips company develop the Stirling-cycle Stirling Cryocooler which converts mechanical energy to a temperature difference.
  • 1962 - William J. Buehler and Frederick Wang discover the Nickel titanium alloy known as Nitinol which has a shape memory dependent on its temperature.
  • 1992 - The first practical magnetohydrodynamic generators are built in Serbia and the USA.

Twenty first century

  • 2011 - Michigan State University builds the first wave disk engine. An internal combustion engine which does away with pistons, crankshafts and valves , and replaces them with a disc-shaped shock wave generator. [5]

See also

  • Timeline of rocket and missile technology - Rockets can be considered to be heat engines. The heat of their exhaust gases is converted into mechanical energy.
  • History of thermodynamics
  • History of the internal combustion engine
  • Timeline of motor and engine technology
  • Timeline of steam power
  • Timeline of temperature and pressure measurement technology

References / sources

  1. Hellemans, Alexander; et al. (1991). ""The Timetables of Science: A Chronology of the Most Important People and Events in the History of Science"". New York: Touchstone/Simon & Schuster, Inc., 1991.
  2. Hassan, Ahmad Y. "Taqi al-Din and the First Steam Turbine". History of Science and Technology in Islam. Retrieved on 2008-03-29.
  3. "The History of the Automobile - Gas Engines". (2009-09-11). Retrieved on 2009-10-19.
  4. The Griffin Engineering Company, of Bath, Somerset University Of Bath, 15 December 2004. Accessed May 2011
  5. Michigan State University: Wave Disk Engine U.S. Department of Energy , Advanced Research Projects Agency, March 2011

Further reading

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