Modeling of a resonant heat engine

A resonant heat engine in which the piston assembly is replaced by a sealed elastic cavity is modeled and analyzed. A nondimensional lumped-parameter model is derived and used to investigate the factors that control the performance of the engine. The thermal efficiency predicted by the model agrees...

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Bibliographic Details
Published in:Journal of applied physics 2012-12, Vol.112 (12)
Main Authors: Preetham, B. S., Anderson, M., Richards, C.
Format: Article
Language:English
Subjects:
Assembly
Density
Heat engines
Holes
Mathematical models
Otto cycle
Pistons
Thermal efficiency
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Summary:A resonant heat engine in which the piston assembly is replaced by a sealed elastic cavity is modeled and analyzed. A nondimensional lumped-parameter model is derived and used to investigate the factors that control the performance of the engine. The thermal efficiency predicted by the model agrees with that predicted from the relation for the Otto cycle based on compression ratio. The predictions show that for a fixed mechanical load, increasing the heat input results in increased efficiency. The output power and power density are shown to depend on the loading for a given heat input. The loading condition for maximum output power is different from that required for maximum power density.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.4769447