Finite-time thermodynamics: engine performance Improved by optimized piston motion

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Date

1981

Authors

Mozurkewich, M.
Berry, R.S.

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Publisher

National Academy of Science

Abstract

The methods of finite-time thermodynamics are used to find the optimal time path of an Otto cycle with friction and heat leakage. Optimality is defined by maximization of the work per cycle; the system is constrained to operate at a fixed frequency, so the maximum power is obtained. The result is an improvement of about 10% in the effectiveness (second-law efficiency) of a conventional near-sinusoidal engine.

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Citation

Proc. Nat. Acad. Sci., 78, 1986-1988.