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| 5th International Workshop on Nonequilibrium Thermodynamics IWNET 2009 |
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Poster P2.8 Tuesday 16:00 Efficiency at maximum omega function: An analytically solvable model for stochastic heat engines Depto. de Fisica, Escuela Superior de Fisica y Matematicas, Instituto Politecnico Nacional, UP Zacatenco, Edif. #9, 2o Piso, Ciudad de Mexico 07738, Mexico Abstract: We study a class of cyclic Brownian heat engines in the context of finite-time thermodynamics. For infinitely long cycle time, the engine works at the Carnot efficiency limit, producing, however, zero power. We find an expression for the efficiency at maximum omega function, and we compare this with the efficiency at maximum power. Our results are illustrated with a simple one-dimensional engine working in and with a time-dependent harmonic potential. |
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