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    Study of Two Phase Natural Circulation Cooling of Core Catcher System Using Scaled Model

    Source: Journal of Thermal Science and Engineering Applications:;2015:;volume( 007 ):;issue: 003::page 31006
    Author:
    Revankar, Shripad T.
    ,
    Song, Kiwon
    ,
    Rhee, B. W.
    ,
    Park, R. J.
    ,
    Ha, K. S.
    ,
    Song, J. H.
    DOI: 10.1115/1.4030249
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: A twophase natural circulation cooling has been proposed to remove melted core decay heat by external core catcher cooling system during sever accident scenario. In this paper, two types of the core catcher cooling loops, one with heated loop and the other adiabatic loop simulated with air water system are analytically studied. First, a scaling analysis was carried out for natural circulation flow in a closed loop. Based on the scaling analyses, simulation of twophase natural circulation is carried out both for air–water and steam–water system in an inclined rectangular channel. The heat flux corresponding to the decay heat is simulated with steam generation rate or air flux into the test section to produce equivalent flow quality and void fraction. Design calculations were carried out for typical core catcher design to estimate the expected natural circulation rates. The natural circulation flow rate and twophase pressure drop were obtained for different heat inputs or equivalent air injection rates expressed as void fraction for a select downcomer pipe size. These results can be used to scale a steam water system using scaling consideration presented. The results indicate that the air–water and steam water system show similar flow and pressure drop behavior.
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      Study of Two Phase Natural Circulation Cooling of Core Catcher System Using Scaled Model

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    http://yetl.yabesh.ir/yetl1/handle/yetl/159726
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    • Journal of Thermal Science and Engineering Applications

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    contributor authorRevankar, Shripad T.
    contributor authorSong, Kiwon
    contributor authorRhee, B. W.
    contributor authorPark, R. J.
    contributor authorHa, K. S.
    contributor authorSong, J. H.
    date accessioned2017-05-09T01:23:49Z
    date available2017-05-09T01:23:49Z
    date issued2015
    identifier issn1948-5085
    identifier othertsea_007_03_031006.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/159726
    description abstractA twophase natural circulation cooling has been proposed to remove melted core decay heat by external core catcher cooling system during sever accident scenario. In this paper, two types of the core catcher cooling loops, one with heated loop and the other adiabatic loop simulated with air water system are analytically studied. First, a scaling analysis was carried out for natural circulation flow in a closed loop. Based on the scaling analyses, simulation of twophase natural circulation is carried out both for air–water and steam–water system in an inclined rectangular channel. The heat flux corresponding to the decay heat is simulated with steam generation rate or air flux into the test section to produce equivalent flow quality and void fraction. Design calculations were carried out for typical core catcher design to estimate the expected natural circulation rates. The natural circulation flow rate and twophase pressure drop were obtained for different heat inputs or equivalent air injection rates expressed as void fraction for a select downcomer pipe size. These results can be used to scale a steam water system using scaling consideration presented. The results indicate that the air–water and steam water system show similar flow and pressure drop behavior.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleStudy of Two Phase Natural Circulation Cooling of Core Catcher System Using Scaled Model
    typeJournal Paper
    journal volume7
    journal issue3
    journal titleJournal of Thermal Science and Engineering Applications
    identifier doi10.1115/1.4030249
    journal fristpage31006
    journal lastpage31006
    identifier eissn1948-5093
    treeJournal of Thermal Science and Engineering Applications:;2015:;volume( 007 ):;issue: 003
    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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