Intrinsically irreversible light-driven engine

Stanley Watowich, Karl Heinz Hoffmann, R. Stephen Berry

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

We examine a reciprocating heat engine which necessarily operates far from equilibrium and about an unstable steady state. The piston of the engine is driven by the nonlinear coupling of the working fluid to an external light source which provides high quality heat and to the environment into which waste heat is dumped. We determine the piston trajectories that optimize two different criteria of process performance, the maximization of work output, and the minimization of entropy production. The trajectories optimizing different performance goals are qualitatively different. In engines not dominated by friction losses, the cycle optimizing work output requires that the expansion stroke begins with a slight compression and the temperature of the working fluid increases briefly.

Original languageEnglish (US)
Pages (from-to)2893-2901
Number of pages9
JournalJournal of Applied Physics
Volume58
Issue number8
DOIs
StatePublished - 1985
Externally publishedYes

Fingerprint

working fluids
pistons
engines
trajectories
heat engines
waste heat
output
strokes
light sources
friction
entropy
heat
cycles
optimization
expansion
temperature

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Intrinsically irreversible light-driven engine. / Watowich, Stanley; Hoffmann, Karl Heinz; Berry, R. Stephen.

In: Journal of Applied Physics, Vol. 58, No. 8, 1985, p. 2893-2901.

Research output: Contribution to journalArticle

Watowich, Stanley ; Hoffmann, Karl Heinz ; Berry, R. Stephen. / Intrinsically irreversible light-driven engine. In: Journal of Applied Physics. 1985 ; Vol. 58, No. 8. pp. 2893-2901.
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