Nonlinear effects for three-terminal heat engine and refrigerator

Wang, Rongqian; Lu, Jincheng; Wang, Chen; Jiang, Jianhua

doi:10.1038/s41598-018-20757-8

Cited by 25 publications

(18 citation statements)

References 48 publications

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“…The three-terminal device can be tuned to be a refrigerator [15,50], by exchanging temperatures of the three electrodes, i.e., T R(P ) = T h , T L = T c , with T h > T c , as shown in Fig. 1(b).…”

Section: Thermoelectric Cooperative Effects On a Three-terminal Rmentioning

confidence: 99%

Energy cooperation in quantum thermoelectric systems with multiple electric currents*

Liu¹,

Lu²,

Wang³

et al. 2020

Chinese Phys. B

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The energy efficiency and power of a quantum thermoelectric system with multiple electric currents and only one heat currents are studied. The system is connected to the hot heat bath with one terminal but the cold bath with multiple terminals or vice versal. We find that the cooperative effects can be a potentially useful tool in improving the energy efficiency and output power in multi-terminal mesoscopic thermoelectric systems. As an example, we show that the cooperation between the two thermoelectric effects in three-terminal thermoelectric systems leads to markedly improved performance of heat engine within the linear response regime using the Landauer-Bütiker formalism. Such improvement also emerge in four-terminal thermoelectric heat engines with three output electric currents. Cooperative effects in these multi-terminal thermoelectric systems can significantly enlarge the physical parameter region with high efficiency and power. For refrigeration, we find that the energy efficiency can also be substantially improved if multi-terminal configurations are considered, suggesting a useful scheme toward electronic cooling. Our study illustrates cooperative effects as a convenient approach toward high-performance thermoelectric energy conversion in multi-terminal mesoscopic systems.

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Section: Thermoelectric Cooperative Effects On a Three-terminal Rmentioning

confidence: 99%

Energy cooperation in quantum thermoelectric systems with multiple electric currents*

Liu¹,

Lu²,

Wang³

et al. 2020

Chinese Phys. B

Self Cite

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“…In practical applications, the first target is to find out the optimal energy efficiency and the condition that realizes the optimal energy efficiency for the functional materials/systems. 48,[50][51][52][53][54][55][56][57][58][59][60] A general theory was developed to fulfill this target for thermodynamic systems with arbitrary Onsager matrix (that may describe complex responses to multiple forces).…”

Section: Basic Theoretical Frameworkmentioning

confidence: 99%

Cooperative Spin Caloritronic Devices

Lu¹,

Zhuo²,

Zhen³

et al. 2019

ES Energy Environ.

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We report a concept of thermoelectric devices, cooperative spin caloritronics device (CSCD), where cooperation between two or more energy channels such as spin, charge and heat currents can significantly enhance energy efficiency of spin caloritronic devices. We derive the figure of merit and the maximum efficiency due to cooperative effect in analytic forms for a CSCD. Cooperative effects significantly improve the figure of merit and the maximum efficiency in spin caloritronic systems with multiple couplings effects. Several examples of CSCDs, including electrical and thermal current induced DW motion, spin-thermoelectric power generator and spin-thermoelectric cooling/heating, are studied to illustrate the usefulness of the cooperative effect. We compare the efficiency of CSCD with several recently proposed spin caloritronic devices. Our scheme provides a novel route to seek high performance materials and structures for future spin caloritronic devices.

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“…12 Otherwise, Wang et al investigated the nonlinear effect of a three-terminal refrigerator. 13 In addition, Chen et al put forward the equivalent combined systems of three-heat-source heat pumps and compared the performance of them with the performance of two-heat-source heat pumps. 14 The relationship between optimal the coefficient of performance (COP) and heating load of a three-heat-reservoir endoreversible heat pump with non-linear heat transfer was derived.…”

Section: Introductionmentioning

confidence: 99%

“…[18][19][20] Other three-terminal thermoelectric devices which are driven by phonons, magnons, photons, also have been analyzed. [21][22][23][24][25][26][27][28][29] On the basis of the previous works, we propose a multi-level quantum dot thermal amplifier. The main focus in this paper is to analyze the thermodynamic performance characteristics and the optimal performance of a multi-level quantum dot thermal amplifier.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic Performance and Optimal Analysis of A Multi-Level Quantum Dot Thermal Amplifier

Li¹,

Yang²,

Fu³

et al. 2019

ES Energy Environ.

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A multi-level quantum dot thermal amplifier with heat leakage is proposed. Based on the theory of the Landauer formula, the electron flux, the heat flux, the heat-pumping rate and the coefficient of performance are derived. The three-dimensional projection graphs of the heat-pumping rate and the coefficient of performance versus the relative central energy levels are plotted. Moreover, the influence of the energy-level spacing, the number of energy levels, the total coupling strength, the asymmetry factor and the heat leakage coefficient on the optimal performance parameters is analyzed in detail. By choosing appropriate values of the system parameters, one can enhance the maximum heat-pumping rate and coefficient of performance.

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Nonlinear effects for three-terminal heat engine and refrigerator

Cited by 25 publications

References 48 publications

Energy cooperation in quantum thermoelectric systems with multiple electric currents*

Energy cooperation in quantum thermoelectric systems with multiple electric currents*

Cooperative Spin Caloritronic Devices

Thermodynamic Performance and Optimal Analysis of A Multi-Level Quantum Dot Thermal Amplifier

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