| Full text | |
| Author(s): |
Total Authors: 4
|
| Affiliation: | [1] Univ Sao Paulo, Inst Fis, BR-05508090 Sao Paulo, SP - Brazil
[2] Univ Fed Paraiba, Dept Fis, CCEN, Caixa Postal 5008, BR-58059900 Joao Pessoa, Paraiba - Brazil
Total Affiliations: 2
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| Document type: | Journal article |
| Source: | PHYSICAL REVIEW RESEARCH; v. 3, n. 2 JUN 9 2021. |
| Web of Science Citations: | 0 |
| Abstract | |
The performance of endoreversible thermal machines operating at finite power constitutes one of the main challenges of nonequilibrium classical and quantum thermodynamics, engineering, and others. We introduce the idea of adjusting the interaction time asymmetry in order to optimize the engine performance. We consider one of the simplest thermal machines, composed of a quantum dot interacting sequentially with two different reservoirs of heat and particles. Distinct optimization protocols are analyzed in the framework of stochastic thermodynamics. Results reveal that asymmetric interaction times play a fundamental role in enhancing the power output and that maximizations can provide an increase of more than 25% compared with the symmetric case. As an extra advantage, efficiencies at maximum power are slightly greater than the endoreversible Curzon-Ahlborn efficiency for a broad range of reservoir temperatures. (AU) | |
| FAPESP's process: | 18/02405-1 - Temporal disorder and entropy production in nonequilibrium systems with symmetry Z2 |
| Grantee: | Carlos Eduardo Fiore dos Santos |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 20/03708-8 - Effective efficiency (spin-off: physicality of time reversal) |
| Grantee: | Pedro Eduardo Harunari |
| Support Opportunities: | Scholarships abroad - Research Internship - Doctorate (Direct) |
| FAPESP's process: | 17/24567-0 - Phase transition, temporal disorder and entropy production in systems with inversion symmetry |
| Grantee: | Pedro Eduardo Harunari |
| Support Opportunities: | Scholarships in Brazil - Doctorate (Direct) |