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Tong Fu

Bio: Tong Fu is an academic researcher from Xiamen University. The author has contributed to research in topics: Maximum power principle & Thermophotovoltaic. The author has an hindex of 2, co-authored 10 publications receiving 10 citations.

Papers
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Journal ArticleDOI
Tao Liang1, Tong Fu1, Cong Hu1, Xiaohang Chen1, Shanhe Su1, Jincan Chen1 
TL;DR: In this paper, a new concentrated solar spectrum photovoltaic-thermophotonophoton-oxide (THO) hybrid system is proposed, where full-spectrum solar energy is split into different parts according to specific requirements.

21 citations

Journal ArticleDOI
Cong Hu1, Tong Fu1, Tao Liang1, Xiaohang Chen1, Shanhe Su1, Jincan Chen1 
01 Aug 2021-Energy
TL;DR: In this article, a novel model of the solar-driven intermediate band thermoradiative device consisting of a solar concentrator, an absorber, an intermediate band solar cell and an optical filter is proposed.

9 citations

Journal ArticleDOI
Jincan Chen1, Tao Liang1, Cong Hu1, Dinesh Khattar1, Tong Fu1, Shanhe Su1, Jincan Chen1 
15 Jan 2022-Energy
TL;DR: In this article, a novel solar-driven graphene-anode thermionic converter is proposed, in which a photon reflector is attached to the graphene anode to reduce dissipation, and expressions for the power output density and efficiency of the system are derived by considering the major irreversible dissipation.

7 citations

Journal ArticleDOI
Tong Fu1, Jianying Du1, Shanhe Su1, Guozhen Su1, Jincan Chen1 
TL;DR: In this paper, a thermodynamic pump driven by Maxwell's demon is proposed, and the modified entropy-production rate containing information flow and the local rates of nonequilibrium free energy of quantum pumps are calculated.
Abstract: By considering the actual equivalent circuit model of three quantum dots with Coulomb coupling, a thermodynamic pump driven by Maxwell’s demon is proposed. The pump may be a quantum chemical pump operated between two material reservoirs or a quantum heat pump operated between two heat reservoirs, and the demon may be a subsystem operated between two heat reservoirs or between two material reservoirs. The Markov stochastic thermodynamics is used to analyze how information is generated in the demon, which drives the mass or heat transfer in the pump. Nonequilibrium free energy theorems demonstrate that the information provided by Maxwell’s demon makes the quantum pump work normally without energy input. It is proved that the proposed system does not violate the second law of thermodynamics. Moreover, the modified entropy-production rate containing information flow and the local rates of nonequilibrium free energy of quantum pumps are calculated. The results obtained may be helpful to the deep understanding of the inter-conversion of both information and work.

4 citations

Journal ArticleDOI
Jianying Du1, Tong Fu1, Cong Hu1, Shanhe Su1, Jincan Chen1 
TL;DR: In this paper, the relationship between the entropy production rate and the thermal efficiency or coefficient of performance of two types of electron filters was analyzed and it was shown that the decrease of the entropy rate does not always guarantee the increase of the thermal energy efficiency or performance.
Abstract: Based on nanoelectronic devices that can act as power generators or refrigerators, the relations between the entropy production rate and the thermal efficiency or coefficient of performance are obtained for two types of electron filters. It is found that the decrease of the entropy production rate does not always guarantee the increase of the thermal efficiency or coefficient of performance, indicating that the state of the minimum entropy production rate does not correspond to that of the maximum thermal efficiency or coefficient of performance in these electronic devices. It implies the fact that different from the thermal efficiency or coefficient of performance, the entropy production rate is not a good objective function for optimizing the performance of electronic devices. However, entropy analyses will be helpful to deeply understanding the thermodynamic properties of electronic devices. These results obtained here will provide a feasible scheme to further optimize and improve the performances of electronic devices.

3 citations


Cited by
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Journal ArticleDOI
TL;DR: In this article, the authors explore the finite-time dynamics of absorption refrigerators composed of three qubits and show that coherent oscillations inherent to quantum dynamics can be harnessed to reach temperatures that are colder than the steady state in orders of magnitude less time, thereby providing a fast source of low-entropy qubits.
Abstract: The extension of thermodynamics into the quantum regime has received much attention in recent years. A primary objective of current research is to find thermodynamic tasks which can be enhanced by quantum mechanical effects. With this goal in mind, we explore the finite-time dynamics of absorption refrigerators composed of three qubits. The aim of this finite-time cooling is to reach low temperatures as fast as possible and subsequently extract the cold particle to exploit it for information processing purposes. We show that the coherent oscillations inherent to quantum dynamics can be harnessed to reach temperatures that are colder than the steady state in orders of magnitude less time, thereby providing a fast source of low-entropy qubits. This effect demonstrates that quantum thermal machines can surpass classical ones, reminiscent of quantum advantages in other fields, and is applicable to a broad range of technologically important scenarios.

99 citations

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TL;DR: In this article, the authors summarized the latest progress of thermoelectric materials and devices and discussed multiple strategies for improving the performance of TE materials via regulating carriers and phonons.

75 citations

Journal ArticleDOI
TL;DR: In this paper, the authors provide considerations focused on thermal management of heat sources for the design of thermoelectric generators and methods to evaluate specific energy sources and prototypes are presented.

49 citations

Journal ArticleDOI
TL;DR: In this paper, an irreversible three-terminal energy selective electron generator model is proposed, and analytical expressions of power and efficiency are derived, and the optimal performance of the device is investigated.
Abstract: The energy selective electron device works among electron reservoirs with different temperatures and chemical potentials. Electrons obey the Fermi-Dirac distribution, and with the help of resonant filters, a part of electrons with specific energy levels can tunnel among reservoirs and provide current to an external circuit. Herein, an irreversible three-terminal energy selective electron generator model is proposed. Using statistical mechanics and finite-time-thermodynamics, analytical expressions of power and efficiency are derived, and the optimal performance of the device is investigated. Results show that the central energy level difference of filters, the chemical potential difference of low-temperature reservoirs, the interval of mean-central-energy-level of filters and the mean-chemical-potential of low-temperature reservoirs can be optimized to maximize power and efficiency. On the basis of power and efficiency analyses, performance characteristics under different objective functions, including efficient power and ecological function, are discussed and the corresponding optimal performance regions are obtained. The relationship between the entropy generation rate and the efficiency is investigated, and it is shown that the minimum-entropy-generation-state does not coincide with the maximum-efficiency-state.

37 citations

Journal ArticleDOI
TL;DR: In this paper , the basic characteristics of the two technologies are considered and compared from the perspectives of thermodynamic evaluation and parameter analysis, and a theoretical model is established to analyze the thermodynamic limitation of the solar spectrum-split photo-thermal cascade conversion, which is in the range of 84.96%-93.10% and higher than that of solar thermophotovoltaic (STPV) (84.96%).

14 citations