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    A Brayton Pumped Thermal Energy Storage System Based on Supercritical Carbon Dioxide Recompression Reheating Discharge Cycle

    Source: ASME Open Journal of Engineering:;2025:;volume( 004 )::page 41002-1
    Author:
    You, Dongchuan
    ,
    Tatli, Akif Eren
    ,
    Metghalchi, Hameed
    DOI: 10.1115/1.4067446
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: In recent years, renewable energy such as solar energy and large-scale energy storage, which is a very important technology to compensate for solar energy's fluctuation due to weather issues, have been extensively investigated. In this paper, a Pumped Thermal Energy Storage (PTES) cycle based on a supercritical carbon dioxide (sCO2) Recompression Reheating cycle and energy pump with a recuperator has been proposed and analyzed. Molten salt with varying temperatures of 565 °C to 730 °C has been used for energy storage. The pressure ratios have been fixed in the discharge cycle as 2.5, and in the charging cycle, it varies in order to find the optimum operation condition. Parametric studies have been made to determine the best performance of the new system. Molten salt temperature, split ratio, pressure ratio, and intermediate pressure have been varied in the calculation. Exergy analysis has been developed in order to determine exergy destruction in all components. Roundtrip efficiencies have been calculated over a wide range of operating conditions. Different working fluids such as argon, carbon dioxide, and nitrogen were used in both cycles. Performance was determined for different combinations of working fluids. It is concluded that for best performance working fluid for energy pump (charging) should be argon and carbon dioxide should be the working fluid for discharging cycle. For this combination operating at optimum molten salt temperature, intermediate pressure and split ratio in the discharging cycle, the roundtrip efficiency is 66%, which is the maximum.
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      A Brayton Pumped Thermal Energy Storage System Based on Supercritical Carbon Dioxide Recompression Reheating Discharge Cycle

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4306030
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    contributor authorYou, Dongchuan
    contributor authorTatli, Akif Eren
    contributor authorMetghalchi, Hameed
    date accessioned2025-04-21T10:21:53Z
    date available2025-04-21T10:21:53Z
    date copyright1/28/2025 12:00:00 AM
    date issued2025
    identifier issn2770-3495
    identifier otheraoje_4_041002.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4306030
    description abstractIn recent years, renewable energy such as solar energy and large-scale energy storage, which is a very important technology to compensate for solar energy's fluctuation due to weather issues, have been extensively investigated. In this paper, a Pumped Thermal Energy Storage (PTES) cycle based on a supercritical carbon dioxide (sCO2) Recompression Reheating cycle and energy pump with a recuperator has been proposed and analyzed. Molten salt with varying temperatures of 565 °C to 730 °C has been used for energy storage. The pressure ratios have been fixed in the discharge cycle as 2.5, and in the charging cycle, it varies in order to find the optimum operation condition. Parametric studies have been made to determine the best performance of the new system. Molten salt temperature, split ratio, pressure ratio, and intermediate pressure have been varied in the calculation. Exergy analysis has been developed in order to determine exergy destruction in all components. Roundtrip efficiencies have been calculated over a wide range of operating conditions. Different working fluids such as argon, carbon dioxide, and nitrogen were used in both cycles. Performance was determined for different combinations of working fluids. It is concluded that for best performance working fluid for energy pump (charging) should be argon and carbon dioxide should be the working fluid for discharging cycle. For this combination operating at optimum molten salt temperature, intermediate pressure and split ratio in the discharging cycle, the roundtrip efficiency is 66%, which is the maximum.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleA Brayton Pumped Thermal Energy Storage System Based on Supercritical Carbon Dioxide Recompression Reheating Discharge Cycle
    typeJournal Paper
    journal volume4
    journal titleASME Open Journal of Engineering
    identifier doi10.1115/1.4067446
    journal fristpage41002-1
    journal lastpage41002-10
    page10
    treeASME Open Journal of Engineering:;2025:;volume( 004 )
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
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