Performance evaluation of a novel photovoltaic-electrochemic hybrid system

Zhao, Qin; Guo, Xiaochuan; Zhang, Houcheng; Ni, Meng; Hou, Shujin

doi:10.1016/j.enconman.2019.05.097

Cited by 49 publications

(12 citation statements)

References 63 publications

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“…Many hybridized and multifunctioning thermogalvanic cells have been proposed for higher electrical output and stable efficiency. 56,57 For harvesting light of a comparatively higher wavelength, a hybridized dye-sensitized solar cell (DSSC) and electrochemical cell (Fig. 3d) were investigated, where the efficiency increased by 32.18% compared to that of a single DSSC.…”

Section: Thermogalvanic Effects For Scavenging Energymentioning

confidence: 99%

Redox-induced electricity for energy scavenging and self-powered sensors

Hasan

Yang

2021

J. Mater. Chem. A

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Section: Thermogalvanic Effects For Scavenging Energymentioning

confidence: 99%

Redox-induced electricity for energy scavenging and self-powered sensors

Hasan

Yang

2021

J. Mater. Chem. A

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“…After the process of cooling, the TREC enters the discharging process and releases heat flow

Q_{L}

into the environment. Due to the nonideal thermodynamic cycle, there exists regenerative loss during regeneration process 13‐15 . Figure 1C gives the equivalent electrical circuit of a PSC.…”

Section: Model Description and Working Principlementioning

confidence: 99%

“…According to electrochemistry and heat transport, the heat flows absorbed from the PSC in the charging process and released to the environment in discharging process are, respectively, given by 13‐15,20,22

Q_{H} = α T_{H} I_{T} - I_{T}^{2} R_{I} + \frac{C_{normalp}}{C_{normalq}} I_{T} ((), T_{H} - T_{L}) ((), 1 - η_{R})

and

Q_{L} = α T_{L} I_{T} + I_{T}^{2} R_{I} + \frac{C_{normalp}}{C_{normalq}} I_{T} ((), T_{H} - T_{L}) ((), 1 - η_{R})

where

α

is isothermal coefficient.

I_{T}

is the operating current.…”

Section: Model Description and Working Principlementioning

confidence: 99%

“…By using Equations () and (), the generated power

P_{T}

from TRECs can be expressed as 13‐15,20,22

P_{T} = m ((), Q_{H} - Q_{L}) = V_{T} I_{T},

where

V_{T} = m ([], α ((), T_{H} - T_{L}) - 2 I_{T} R_{I})

is the output voltage.

m

is the simultaneously charged number.…”

Section: Model Description and Working Principlementioning

confidence: 99%

“…The results can offer some theoretical strategies for the design of a low‐grade coupled energy cascade utilization system. Recently, the researchers proposed a new strategy for the solar cells waste heat recovery through thermally regenerative electrochemical cycles (TRECs) 13‐15 . The TRECs utilize electrochemical cells to charge at a high temperature and discharge at a low temperature, the charging voltage is smaller than the discharge voltage, and then generate power through the net output voltage 16‐20 .…”

Section: Introductionmentioning

confidence: 99%

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Coupled and optimized properties of a hybrid system integrating electrochemical cycles with perovskite solar cell

et al. 2021

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Summary The low‐grade waste heat generated by the perovskite solar cells (PSCs) during the photoelectric conversion process will increase the temperature and the efficiency of PSCs. In the present work, the waste heat from PSC is recovered by integrating a series of thermally regenerative electrochemical cycles (TRECs) with PSC to achieve energy cascade utilization and improve solar energy utilization. Based on the theories of conservation laws, electrochemistry, and thermodynamics, the formulas for the overall power generation and efficiency of the coupled system are derived. First, the performance characteristics of three special circuit states of open circuit of TRECs, open circuit of PSC, and series of electrical circuit of PSC‐TRECs are studied to determine the maximum efficiency and optimal conditions. Second, the optimum performances of PSC and TRECs that generate electricity independently are studied, and a maximum efficiency of 24.9% is obtained by numerical simulation. The proposed coupled system offers a new route for recycling of PSC's low‐grade thermal energy.

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Performance investigation of a system hybridizing dye‐sensitized solar cell with thermoelectric devices for power and cooling

Huang

Chen

2022

Intl J of Energy Research

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Summary To realize the broad energy utilization, a novel combined system mainly consisting of a dye‐sensitized solar cell (DSSC), a thermoelectric generator (TEG), and a thermoelectric cooler (TEC) is proposed. The heat released by the DSSC is partially utilized for TEG to generate electricity, thereby driving the TEC for cooling. Considering diverse irreversible losses of the system, the power density, energy efficiency, and exergy efficiency of the coupled system are discussed concretely. In the TEG‐TEC current working range, when the power density or efficiency increase rate of the integrated model reaches a maximum, the corresponding power density, energy efficiency, and exergy efficiency are 38.439 W m−2, 13.21%, and 28.34%, respectively, which are 4.42%, 4.43%, and 4.38% higher than those of the DSSC alone. Comprehensive sensitivity analyses are performed for figuring out how the proposed system performance changes with the variation of main operating conductions as well as design parameters of DSSC and TEG‐TEC. Finally, owing to the Thomson effect in TEG‐TEC, the conclusions got here indicate that energy efficiency and power density about this combined model are reduced by 33.28% and 33.22%. Derived conclusions reveal that the established system is appropriate, which may supply new insights into the majorization of such a functional coupled system.

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Performance evaluation of a novel photovoltaic-electrochemic hybrid system

Cited by 49 publications

References 63 publications

Redox-induced electricity for energy scavenging and self-powered sensors

Redox-induced electricity for energy scavenging and self-powered sensors

Coupled and optimized properties of a hybrid system integrating electrochemical cycles with perovskite solar cell

Performance investigation of a system hybridizing dye‐sensitized solar cell with thermoelectric devices for power and cooling

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