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- W4226052181 abstract "The whole process optimization requires that both charging and discharging processes of pumped thermal electricity storage (PTES) and pumped cryogenic electricity storage (PCES) be considered simultaneously. In this paper, the optimized round-trip efficiencies (RTEs) of PTES and PCES under whole process ecological optimization are first derived by using finite-time thermodynamics model. And then the effect of charging and discharging time ratio on working medium temperature, power output, and optimized RTE is investigated by numerical simulation. Moreover, the upper and lower bounds of optimized RTE and the optimal region of RTE are determined. Finally, the optimized RTEs under two different optimization sequences, one is to optimize the charging process first and then the discharging process, and the other is to optimize the discharging process first and then the charging process are compared. These studies may provide more comprehensive optimization scheme for design and operation of practical PTES and PCES systems." @default.
- W4226052181 created "2022-05-05" @default.
- W4226052181 creator A5057932136 @default.
- W4226052181 creator A5060014251 @default.
- W4226052181 date "2022-04-01" @default.
- W4226052181 modified "2023-09-24" @default.
- W4226052181 title "Thermodynamic efficiency and bounds of pumped thermal electricity storage under whole process ecological optimization" @default.
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- W4226052181 doi "https://doi.org/10.1016/j.renene.2022.02.073" @default.
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