Hot Air Engines
A hot air engine (historically called an air engine or caloric engine) is any heat engine that uses the expansion and contraction of air under the influence of a temperature change to convert thermal energy into mechanical work. These engines may be based on a number of thermodynamic cycles encompassing both open cycle devices such as those of Sir George Cayley and John Ericsson and the closed cycle engine of Robert Stirling. Hot air engines are distinct from the better known internal combustion based engine and steam engine.
In a typical implementation, air is repeatedly heated and cooled in a cylinder and the resulting expansion and contraction is used to move a piston and produce useful mechanical work.
Read more about Hot Air Engines: Definition, History, Thermodynamic Cycles
Famous quotes containing the words hot, air and/or engines:
“A woman is like a teabag—only in hot water do you realize how strong she is.”
—Nancy Reagan (b. 1923)
““With your air indifferent and imperious
At a stroke our mad poetics to confute—”
And—”Are we then so serious?””
—T.S. (Thomas Stearns)
“America is like one of those old-fashioned six-cylinder truck engines that can be missing two sparkplugs and have a broken flywheel and have a crankshaft that’s 5000 millimeters off fitting properly, and two bad ball-bearings, and still runs. We’re in that kind of situation. We can have substantial parts of the population committing suicide, and still run and look fairly good.”
—Thomas McGuane (b. 1939)