Energetics, Maximum Power and Maximum Efficiency Regimes of a Microscopic Heat Engine
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Date
2006-06
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Addis Ababa University
Abstract
A microscopic heat engine is modeled as a Brownian particle which moves through
a highly viscous medium, in an alternately placed hot and cold heat baths, in a
periodic asymmetric saw-tooth potential. Expressions for unidirectional probability
current density (due to thermal variation) as well as energetics of the engine are found
in terms of parameters of the engine for two cases: in the presence and absence of
static external force. Power output and efficiency at maximum power and maximum
efficiency regimes are studied numerically for both cases
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Keywords
Microscopic Heat Engine