Timeline of Heat Engine Technology
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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 17th 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-17th 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. 50 AD - Hero of Alexandria's Engine, also known as Aeolipile. Demonstrates rotary motion produced by the reaction from jets of steam.[2]
• c. 10th century - 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 12th century - 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.[3]
• 1125 - 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.[4]
• 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.[5]
• 1543 - Blasco de Garay, a Spanish naval officer demonstrates a boat propelled without oars or sail that utilised the reaction from a jet issued from a large boiling kettle of water.[4]
• 1551 - Taqi al-Din demonstrates a steam turbine, used to rotate a spit.[6]

## 18th century

• 1707 - Denis Papin - produces design for his second piston steam engine in conjunction with Gottfried Leibniz.
• 1712 - Thomas Newcomen builds the first commercially successful piston-and-cylinder steam-powered water pump for pumping water out of mines. It is known as an atmospheric engine and operates by condensing steam in a cylinder to produce a vacuum which moves the piston by atmospheric pressure.
• 1748 - William Cullen demonstrates the first artificial refrigeration in a public lecture 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. This converts thermal expansion and contraction in two dissimilar solids to mechanical work.
• 1769 - James Watt patents his first improved atmospheric steam engine, see Watt steam engine with a separate condenser outside the cylinder, doubling the efficiency of earlier engines.
• 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. This used the force from pressurized steam to move the piston.

## References

### Citations

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. ^ Hero (1851) [reprint of 1st century CE original], "Section 50 - The Steam Engine". Translated from the original Greek by Bennet Woodcroft (Professor of Machinery in University College London.
3. ^ Needham, Joseph (1986), Science & Civilisation in China, V:7: The Gunpowder Epic, Cambridge University Press, ISBN 0-521-30358-3
4. ^ a b Reid, Hugo (1838). The Steam-engine: Being a Popular Description of the Construction and Action of that Engine; with a Sketch of Its History, and of the Laws of Heat and Pneumatics . Edinburgh: William Tait. p. 74.
5. ^ Thurston, Robert Henry (1996). A History of the Growth of the Steam-Engine (reprint ed.). Elibron. p. 12. ISBN 1-4021-6205-7.
6. ^ Hassan, Ahmad Y. "Taqi al-Din and the First Steam Turbine". History of Science and Technology in Islam. Archived from the original on 2008-02-18. Retrieved .
7. ^ Lardner, Dionysius (1840). The Steam Engine Explained and Illustrated. Taylor and Walton. p. 22. Full title: Le Machine volume nuovo, et di molto artificio da fare effetti maravigliosi tanto Spiritali quanto di Animale Operatione, arichito di bellissime figure. Del Sig. Giovanni Branco, Cittadino Romano. In Roma, 1629
8. ^ R. Boyle, A Defence of the Doctrine Touching the Spring and Weight of the Air, ... (London: Thomas Robinson, 1662). Available on-line at: Spain's La Biblioteca Virtual de Patrimonio Bibliográfico. Boyle presents his law in "Chap. V. Two new experiments touching the measure of the force of the spring of air compress'd and dilated.", pp. 57-68. On p. 59, Boyle concludes that " ... the same air being brought to a degree of density about twice as that it had before, obtains a spring twice as strong as formerly." That is, doubling the density of a quantity of air doubles its pressure. Since air's density is proportional to its pressure, then for a fixed quantity of air, the product of its pressure and its volume is constant. On page 60, he presents his data on the compression of air: "A Table of the Condensation of the Air." The legend (p. 60) accompanying the table states: "E. What the pressure should be according to the Hypothesis, that supposes the pressures and expansions to be in reciprocal relation." On p. 64, Boyle presents his data on the expansion of air: "A Table of the Rarefaction of the Air."https://bvpb.mcu.es/en/consulta/registro.cmd?id=406806
9. ^ The Century of Inventions, written in 1655; by Edward Somerset, Marquis of Worcester. Being a verbatim reprint of the first edition, published in 1663. Archived 21 February 2006 at the Wayback Machine archive https://web.archive.org/web/20060221151830/http://www.history.rochester.edu/steam/dircks/
10. ^ "The History of the Automobile - Gas Engines". About.com. 2009-09-11. Retrieved .
11. ^ The Griffin Engineering Company, of Bath, Somerset Archived 2007-05-13 at the Wayback Machine University Of Bath, 15 December 2004. Accessed May 2011
12. ^ Shoichi Toyabe; Takahiro Sagawa; Masahito Ueda; Eiro Muneyuki; Masaki Sano (2010-09-29). "Information heat engine: converting information to energy by feedback control". Nature Physics. 6 (12): 988-992. arXiv:1009.5287. Bibcode:2011NatPh...6..988T. doi:10.1038/nphys1821. We demonstrated that free energy is obtained by a feedback control using the information about the system; information is converted to free energy, as the first realization of Szilard-type Maxwell's demon.
13. ^ Michigan State University: Wave Disk Engine U.S. Department of Energy, Advanced Research Projects Agency, March 2011
14. ^ "The experimental demonstration of a spin quantum heat engine". phys.org. Retrieved .
15. ^ "New quantum nanodevice can simultaneously act as a heat engine and a refrigerator". phys.org. Retrieved .

### Sources

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