Obtaining efficient collisional engines via velocity-dependent drivings

N., Mamede, Iago; Stable, Angel L. L.; Fiore, Carlos E.

doi:10.1103/physreve.106.064125

Cited by 4 publications

(2 citation statements)

References 36 publications

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“…Despite its reliability in different situations [34,[39][40][41] and the possibility of fine control over its energetics, the conditions to be imposed in order to provide a better performance have not been fully understood and for this reason various (and recent) approaches for enhancing its performance have been proposed and analyzed. Among them, we cite the convenient choices of the duration of each stroke [28,31] and driving [29,42].…”

Section: Introductionmentioning

confidence: 99%

Thermodynamics of a collisional quantum-dot machine: the role of stages

Filho,

Fernández Noa,

Fiore

et al. 2024

J. Phys. A: Math. Theor.

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Sequential (or collisional) engines have been put forward as an alternative candidate for the realisation of reliable engine setups. Despite this, the role of the different stages and the influence of the intermediate reservoirs is not well understood. We introduce the idea of conveniently adjusting/choosing intermediate reservoirs at engine devices as a strategy for optimizing its performance. This is done by considering a minimal model composed of a quantum-dot machine sequentially exposed to various reservoirs at each stage, and for which thermodynamic quantities (including power and efficiency) can be obtained exactly from the framework of stochastic thermodynamics, irrespective the number of stages. Results show that a significant gain can be obtained by increasing the number of stages and conveniently choosing their parameters.

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Section: Introductionmentioning

confidence: 99%

Thermodynamics of a collisional quantum-dot machine: the role of stages

Filho,

Fernández Noa,

Fiore

et al. 2024

J. Phys. A: Math. Theor.

View full text Add to dashboard Cite

show abstract

“…In our case, the inclusion of different temperatures did not improve the performance of the system, because in these systems only work was converted into other work at each stage. An initial study considering a coupling between driving and velocities was introduced in [155] and possible extensions would be interesting. Another perspective for future works would be the extension of power and efficiency statistics to phase transitions, in order to describe their behavior.…”

Section: General Conclusionmentioning

confidence: 99%