Effect of side walls shape on charging and discharging performance of thermal energy storages based on granular phase change materials

Луценко, Н. А.; Фецов, С. С.

doi:10.1016/j.renene.2020.08.029

Cited by 12 publications

(7 citation statements)

References 39 publications

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“…Energy storage is one of the most effective solutions to smooth out new energy power fluctuations (Chen et al, 2021;Yang et al, 2022), promote high penetration of grid-connected green energy, and reduce the forecasting deviations of PV power, because of its flexible dual characteristics of charging and discharging (Lutsenko and Fetsov, 2020). Therefore, the development of energy storage system will promote energy conservation and emission reduction (Lu et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

An optimal energy storage system sizing determination for improving the utilization and forecasting accuracy of photovoltaic (PV) power stations

Li²,

Yan³

et al. 2023

Front. Energy Res.

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As a new type of flexible regulation resource, energy storage systems not only smooth out the fluctuation of new energy generation but also track the generation scheduling combined with new energy power to enhance the reliability of new energy system operations. In recent years, installing energy storage for new on-grid energy power stations has become a basic requirement in China, but there is still a lack of relevant assessment strategies and techno-economic evaluation of the size determination of energy storage systems from the perspective of new energy power stations. Therefore, this paper starts from summarizing the role and configuration method of energy storage in new energy power stations and then proposes multidimensional evaluation indicators, including the solar curtailment rate, forecasting accuracy, and economics, which are taken as the optimization targets for configuring energy storage systems in PV power stations. Lastly, taking the operational data of a 4000 MWPV plant in Belgium, for example, we develop six scenarios with different ratios of energy storage capacity and further explore the impact of energy storage size on the solar curtailment rate, PV curtailment power, and economics. The method proposed in this paper is effective for the performance evaluation of large PV power stations with annual operating data, realizes the automatic analysis on the optimal size determination of energy storage system for PV power stations, and verifies the rationality of the principle for configuring energy storage for PV power stations in some regions of China.

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Section: Introductionmentioning

confidence: 99%

An optimal energy storage system sizing determination for improving the utilization and forecasting accuracy of photovoltaic (PV) power stations

Li²,

Yan³

et al. 2023

Front. Energy Res.

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“…22,23 Besides, both the small pores and large surface areas of metal foams bring strong guest-host interaction that is in favor of avoiding liquid leakage of PCMs. [24][25][26][27][28] Zhang et al 29 fabricated paraffin/copper foam composite PCMs to enhance thermal conductivity. Real phase change heat transfer characteristic of composite PCMs was evaluated through an experimental study.…”

Section: Introductionmentioning

confidence: 99%

“…Since metal foam caused thermal conduction enhancement over the related natural convection suppression to liquid paraffin, temperature of composite PCMs evaluated more linearly than that of pure paraffin. Marri et al 26 reported thermal performance of experimental and numerical studied on open‐cell aluminum foam/PCMs composite based heat sink. Results showed that heat sink with non‐uniform porosity variation in horizontal and vertical gradient over the uniform porosity and pore density case can individually reach up to 28% and 45%.…”

Section: Introductionmentioning

confidence: 99%

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Investigations on transient thermal performance of phase change materials embedded in metal foams for latent heat thermal energy storage

Zhang

Yuan

et al. 2021

Intl J of Energy Research

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A feasibly numerical model based on enthalpy-porosity and local thermal nonequilibrium is proposed to explore the transient heat transfer characteristics of phase change materials (PCMs) embedded in metal foams during charging process. Parametric analysis elaborates effects of various parameters on thermal performance of PCMs. Heat transfer and storage performances are further conducted from the perspectives of transient temperature. Results indicate that metal foams are capable of boosting melting rate of PCMs and phase change heat transfer is dominated through thermal conduction with obviously weakened natural convection. Metal foams with less thermal conductivity lead to lower temperature differences between metal foams and PCMs and more uniform temperature distributions of PCMs embedded in metal foams are developed over pure PCMs case. The complete melting times of PCMs can be shorten by approximately of 55.03%, 54.75% and 49.58%, when incorporated in metal foams and superiorities are even more obvious under lower porosity, larger pore density or higher heat flux. Greatest results in profiles and contours of temperature difference correspond well to mushy zones of phase transitions. Thermal energy is primarily reserved in PCMs in the form of latent heat. In conclusion, this paper is expected to be explicitly beneficial to broaden phase change energy storage applications.

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“…Filtration combustion is one of the promising methods for processing solid fuels. Studies of the filtration combustion of various types of coal, peat, wood, and some types of solid combustible waste have shown that this mode has a wider range of fuels acceptable for processing the ash and moisture content than the other known methods [1][2][3]. This is achieved as a result of the heat exchange between flows of solid and gaseous substances moving towards each other relative to the front of the chemical reaction [4,5].…”

Section: Introductionmentioning

confidence: 99%

Energy Efficiency of the Gasification of a Dense Layer of Solid Fuels in the Filter Combustion Mode

Кислов

Цветков

Zaichenko

et al. 2021

Russ. J. Phys. Chem. B

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The energy efficiency of the gasification of various solid fuels in the filtration combustion mode is evaluated. The modes of gasification of carbon and organic fuels with the moisture content of up to 70% and ash content of up to 90% are considered. The efficiency of air gasification of low-moisture carbon fuels does not exceed 70%; and of organic fuels, 85%. The efficiency of the air gasification of high-moisture fuels can reach 85-90%. The addition of steam to the gaseous oxidizer increases the efficiency of the process. The efficiency of steam-air the gasification of low-moisture low-ash carbon fuels reaches 85%. In the case of organic fuels, the maximum efficiency of steam-air gasification is observed for fuels with an ash content of 20 to 40%. For highly reactive fuels, the maximum efficiency is observed for ashless fuels. If the reactivity of the fuel is low, the highest gasification efficiency will be for high ash fuels.

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Effect of side walls shape on charging and discharging performance of thermal energy storages based on granular phase change materials

Cited by 12 publications

References 39 publications

An optimal energy storage system sizing determination for improving the utilization and forecasting accuracy of photovoltaic (PV) power stations

An optimal energy storage system sizing determination for improving the utilization and forecasting accuracy of photovoltaic (PV) power stations

Investigations on transient thermal performance of phase change materials embedded in metal foams for latent heat thermal energy storage

Energy Efficiency of the Gasification of a Dense Layer of Solid Fuels in the Filter Combustion Mode

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