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Thermodynamic Bound on Heat-to-Power Conversion

2018; American Physical Society; Volume: 121; Issue: 8 Linguagem: Inglês

10.1103/physrevlett.121.080602

1092-0145

Rongxiang Luo, Giuliano Benenti, Giulio Casati, Jiao Wang,

Thermal properties of materials

In systems described by the scattering theory, there is an upper bound, lower than Carnot, on the efficiency of steady-state heat-to-work conversion at a given output power. We show that interacting systems can overcome such bound and saturate, in the thermodynamic limit, the much more favorable linear-response bound. This result is rooted in the possibility for interacting systems to achieve the Carnot efficiency at the thermodynamic limit without delta-energy filtering, so that large efficiencies can be obtained without greatly reducing power.