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The principle of conservation of energy states that the different forms of energy can be transformed into each other, but never created or destroyed, and the total energy of the universe is constant. The Coal transformed into ashes by combustion, no returns on coal to be cooled. Does the principle of conservation of energy is not universal? In order to answer these questions,it is necessary to stand back in time to study the machines that transform thermal energy into other forms of energy. Instruments that transformed thermal energy into mechanical energy existed since ancient times, eg, the machine Heron of Alexandria (50BC-50 AD) (Fig. 1). Although he had no practical application because its usewas restricted to a mere curiosity, this curiosity has shown that it is possible to produce motion through thermal energy. cannula Figure 1: Representation of the machine Heron. For its operation, was placed in the water sphere causing its heating by fire. The steam went out the cannula, moving the ball on the shaft. Later, in 1698, Thomas Savery(1650-1715) created a machine that functioned as a water pump, which has not been heard of how many were built, nor its effectiveness in real practice. The forerunner of the steam engine with some practical application was the Englishman Thomas Newcomen(1663-1729), in 1712. The machine, created by him, required a large amount of combustible material to work and its use was restricted to pumping water to great heights. To give you an idea of its usefulness, in 1930 there was still a Newcomen engine running. Despite the facts mentioned above, of the first moments of studies of thermal machines, when researched on this subject, almost always credit the construction of heat engines is attributed to James Watt(1736-1819), so that the power unit, initially linked to steam power, takes its name.
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Načelo očuvanja energije navodi da su različiti oblici energije mogu se transformirati u svaku drugu, ali nikad stvorena ili uništena, a ukupna energija u svemiru je konstanta. Zajednice za ugljen pretvara u pepeo izgaranjem, nema povrata na ugljen kako bi se ohladi. Da li načelo očuvanja energije nije univerzalan? Kako bismo odgovorili na ta pitanja, potrebnoje stati natrag u vrijeme za proučavanje strojeve koji pretvaraju toplinsku energiju u druge oblike energije. Instrumenti koji pretvaraju toplinsku energiju u mehaničku energiju postojala od davnina, npr. stroj Heron Aleksandrijski (50BC-AD 50) (slika 1). Iako je imao praktičnu primjenu, jerje njihova upotrebabila ograničena na jednostavne znatiželje, znatiželja je pokazala da je moguće proizvesti gibanje kroz toplinske energije. kanila Slika 1: Zastupljenost stroja Heron. Za svoj rad, vodaje stavljen na loptu kako bi ga uzrokuje grijanje vatrom. Parom iziđe kanila, premještanja loptu na osovinu. Kasnije, 1698, Thomas Savery(1650-1715) stvorio je stroj koji je djelovao kao pumpa za vodu, koja nije čula koliko su izgrađena, niti njegovu učinkovitost u realnom praksi. Preteča parnog stroja s nekim praktičnoj primjeni bio je Englez Thomas Newcomen(1663-1729) u 1712. Uređaj, izrađen od strane njega, zahtijeva veliku količinu zapaljivog materijala za rad, a njezina uporaba je ograničena na ispumpavanje vode do velike visine. Da bi vam dati ideju o svojoj korisnosti, u 1930 je još uvijek trčanje Newcomen motora. Unatoč činjenicama navedenim, od prvih trenutaka studija toplinskih strojeva, kada je istražena na ovu temu, gotovo uvijek kreditna izgradnja toplinskih strojeva se pripisuje James Watt(1736-1819), tako da je agregat, u početku povezana s parnom snagom, uzima svoje ime.