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    Experimental Investigation on Flash Evaporation Related to Pipe Leakage

    Source: Journal of Nuclear Engineering and Radiation Science:;2020:;volume( 006 ):;issue: 001::page 011401-1
    Author:
    Cai, Benan
    ,
    Zhang, Qi
    ,
    Weng, Yu
    ,
    Gu, Hongfang
    ,
    Wang, Haijun
    DOI: 10.1115/1.4045125
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Pipelines such as the surge line and main pipe are easily subjected to thermal stratification and thermal fatigue as a result of the nonuniform temperature distribution in the nuclear power plants. When the surge line or main pipe subjected to thermal stratification and thermal fatigue keeps operating for long time, the pipe leakage may happen due to the existence of pipeline crack. When the fluids with high temperature and pressure leak in the crack, the water will evaporate quickly, which means this process belongs to spray flash evaporation process. The flash evaporation related to pipe leak was experimentally studied in the paper. The experiment was carried out under high temperature and high pressure with low spray rate. The temperature and relative humidity (T&H) variations over time were monitored in the experiment with installing T&H detectors. The T&H variations at different measurement positions and with different spray rates were analyzed, respectively. In addition, the effect of the dimensionless parameters including the Weber number and Jakob number was also investigated. Results indicated that the response speed increased with the increase of the spray flow rate. Higher Weber number and higher Jakob number led to higher evaporation rate. The slight pipe leakage can be predicted by using the (T&H) in the hazardous areas.
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      Experimental Investigation on Flash Evaporation Related to Pipe Leakage

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/4275555
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    • Journal of Nuclear Engineering and Radiation Science

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    contributor authorCai, Benan
    contributor authorZhang, Qi
    contributor authorWeng, Yu
    contributor authorGu, Hongfang
    contributor authorWang, Haijun
    date accessioned2022-02-04T22:50:44Z
    date available2022-02-04T22:50:44Z
    date copyright1/1/2020 12:00:00 AM
    date issued2020
    identifier issn2332-8983
    identifier otherners_006_01_011401.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4275555
    description abstractPipelines such as the surge line and main pipe are easily subjected to thermal stratification and thermal fatigue as a result of the nonuniform temperature distribution in the nuclear power plants. When the surge line or main pipe subjected to thermal stratification and thermal fatigue keeps operating for long time, the pipe leakage may happen due to the existence of pipeline crack. When the fluids with high temperature and pressure leak in the crack, the water will evaporate quickly, which means this process belongs to spray flash evaporation process. The flash evaporation related to pipe leak was experimentally studied in the paper. The experiment was carried out under high temperature and high pressure with low spray rate. The temperature and relative humidity (T&H) variations over time were monitored in the experiment with installing T&H detectors. The T&H variations at different measurement positions and with different spray rates were analyzed, respectively. In addition, the effect of the dimensionless parameters including the Weber number and Jakob number was also investigated. Results indicated that the response speed increased with the increase of the spray flow rate. Higher Weber number and higher Jakob number led to higher evaporation rate. The slight pipe leakage can be predicted by using the (T&H) in the hazardous areas.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleExperimental Investigation on Flash Evaporation Related to Pipe Leakage
    typeJournal Paper
    journal volume6
    journal issue1
    journal titleJournal of Nuclear Engineering and Radiation Science
    identifier doi10.1115/1.4045125
    journal fristpage011401-1
    journal lastpage011401-6
    page6
    treeJournal of Nuclear Engineering and Radiation Science:;2020:;volume( 006 ):;issue: 001
    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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