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    Analysis of Heat Transfer of Molten Salts Startup Flow in Cold Pipes Avoiding Freezing in Solar and Nuclear Energy Systems

    Source: Journal of Solar Energy Engineering:;2024:;volume( 147 ):;issue: 001::page 11002-1
    Author:
    Zhang, Ye
    ,
    Haddad, Fouad
    ,
    Li, Peiwen
    DOI: 10.1115/1.4065509
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Molten salts are employed as the heat transfer fluid to carry the thermal energy from a solar receiver or a nuclear reactor for delivering to thermal storage systems or thermal power plants for power generation. For the startup operation, molten salts need to be pumped to flow into the pipes which may have lower temperature than the freezing point of molten salt due to the cold ambient temperature overnight or over the suspension of operation. Preventing the freezing of molten salt in cold pipes becomes a critical issue to the safe operation of a concentrating solar thermal power plant or a molten salt nuclear power plant. This study conducted a basic heat transfer analysis of the transient heat transfer from flowing molten salt to a cold pipe to determine the length from entrance to the onset of freezing of the fluid. From our modeling and analytical solution using method of characteristics, the correlation of the location of onset of freezing of molten salt with respect to the flow velocity, heat capacities of molten salt and pipes, dimension of the pipes, and the initial temperatures of salts and pipes, have been understood clearly. The modeling and computational tool can fundamentally help engineers to design a system to avoid freezing and clogging at cold startup when molten salt is applied as a heat transfer fluid.
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      Analysis of Heat Transfer of Molten Salts Startup Flow in Cold Pipes Avoiding Freezing in Solar and Nuclear Energy Systems

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4306209
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    contributor authorZhang, Ye
    contributor authorHaddad, Fouad
    contributor authorLi, Peiwen
    date accessioned2025-04-21T10:26:40Z
    date available2025-04-21T10:26:40Z
    date copyright5/24/2024 12:00:00 AM
    date issued2024
    identifier issn0199-6231
    identifier othersol_147_1_011002.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4306209
    description abstractMolten salts are employed as the heat transfer fluid to carry the thermal energy from a solar receiver or a nuclear reactor for delivering to thermal storage systems or thermal power plants for power generation. For the startup operation, molten salts need to be pumped to flow into the pipes which may have lower temperature than the freezing point of molten salt due to the cold ambient temperature overnight or over the suspension of operation. Preventing the freezing of molten salt in cold pipes becomes a critical issue to the safe operation of a concentrating solar thermal power plant or a molten salt nuclear power plant. This study conducted a basic heat transfer analysis of the transient heat transfer from flowing molten salt to a cold pipe to determine the length from entrance to the onset of freezing of the fluid. From our modeling and analytical solution using method of characteristics, the correlation of the location of onset of freezing of molten salt with respect to the flow velocity, heat capacities of molten salt and pipes, dimension of the pipes, and the initial temperatures of salts and pipes, have been understood clearly. The modeling and computational tool can fundamentally help engineers to design a system to avoid freezing and clogging at cold startup when molten salt is applied as a heat transfer fluid.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleAnalysis of Heat Transfer of Molten Salts Startup Flow in Cold Pipes Avoiding Freezing in Solar and Nuclear Energy Systems
    typeJournal Paper
    journal volume147
    journal issue1
    journal titleJournal of Solar Energy Engineering
    identifier doi10.1115/1.4065509
    journal fristpage11002-1
    journal lastpage11002-10
    page10
    treeJournal of Solar Energy Engineering:;2024:;volume( 147 ):;issue: 001
    contenttypeFulltext
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