Performance characteristics of low-dissipative generalized Carnot cycles with external leakage losses

Huang, Chih‐Ting; Guo, Juncheng; Chen, Jincan

doi:10.1088/1674-1056/24/11/110506

Cited by 5 publications

(1 citation statement)

References 55 publications

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“…Accordingly, the possible discussions for the stability [19,28,56] of various three-terminal devices may be further implemented by using the proposed model. In addition, the internal dissipation [18] and external leakage losses [57] can be further introduced to make the model more practical. Importantly, the conclusions of the present manuscript, namely, the inequivalence between combined and non-combined low-dissipation models and the appropriate model for describing the thermally driven refrigerator, may contribute to the further investigations on the equivalence between endoreversible and low-dissipation models for multi-terminal thermodynamic devices.…”

Section: Conclusion and Prospectsmentioning

confidence: 99%

Low-dissipation model of three-terminal refrigerator: performance bounds and comparative analyses

González-Ayala

Yang

et al. 2022

J. Phys. A: Math. Theor.

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In the present paper, a general non-combined model of three-terminal refrigerator is established based on the low-dissipation assumption. The relation between the optimized cooling power and the corresponding coefficient of performance (COP) is analytically derived, according to which the COP at maximum cooling power (CMP) can be further determined. At two dissipation asymmetry limits, upper and lower bounds of CMP are obtained and found to be in good agreement with experimental and simulated results. Additionally, comparison of the obtained bounds with previous combined model is presented. In particular it is found that the upper bounds are the same, whereas the lower bounds are quite different. This feature indicates that the claimed universal equivalence for the combined and non-combined models under endoreversible assumption is invalid within the frame of low-dissipation assumption. Then, the equivalence between various finite-time thermodynamic models needs to be reevaluated regarding multi-terminal systems. Moreover, the correlation between the combined and non-combined models is further revealed by the derivation of the equivalent condition according to which the identical upper bounds and distinct lower bounds are theoretically shown. Finally, the proposed non-combined model is proved to be the appropriate model for describing various types of thermally driven refrigerator. This work may provide some instructive information for the further establishments and performance analyses of multi-terminal low-dissipation models.

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