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    The Effect of Pressure Relief Valve Blowdown and Fire Conditions on the Thermo-Hydraulics Within a Pressure Vessel

    Source: Journal of Pressure Vessel Technology:;2006:;volume( 128 ):;issue: 003::page 467
    Author:
    A. M. Birk
    ,
    J. D. VanderSteen
    DOI: 10.1115/1.2218353
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: In the summers of 2000 and 2001, a series of controlled fire tests were conducted on horizontal 1890liter (500 US gallon) propane pressure vessels. The test vessels were instrumented with pressure transducers, liquid space, vapor space, and wall thermocouples, and an instrumented flow nozzle in place of a pressure relief valve (PRV). A computer controlled PRV was used to control pressure. The vessels were heated using high momentum, liquid propane utility torches. Open pool fires were not used for the testing because they are strongly affected by wind. These wind effects make it almost impossible to have repeatable test conditions. The fire conditions used were calibrated to give heat inputs similar to a luminous hydrocarbon pool fire with an effective blackbody temperature in the range of 850°C±50°C. PRV blowdown (i.e., blowdown=poppressure−reclosepressure) and fire conditions were varied in this test series while all other input parameters were held constant. The fire conditions were varied by changing the number of burners applied to the vessel wall areas wetted by liquid and vapor. It was found that the vessel content’s response and energy storage varied according to the fire conditions and the PRV operation. The location and quantity of the burners affected the thermal stratification within the liquid, and the liquid swelling (due to vapor generation in the liquid) at the liquid∕vapor interface. The blowdown of the PRV affected the average vessel pressure, average liquid temperature, and time to temperature destratification in the liquid. Large blowdown also delayed thermal rupture.
    keyword(s): Pressure , Temperature , Vapors , Fire , Vessels , Pressure vessels , Rupture , Thermal stratification AND Relief valves ,
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      The Effect of Pressure Relief Valve Blowdown and Fire Conditions on the Thermo-Hydraulics Within a Pressure Vessel

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    http://yetl.yabesh.ir/yetl1/handle/yetl/134516
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    contributor authorA. M. Birk
    contributor authorJ. D. VanderSteen
    date accessioned2017-05-09T00:21:23Z
    date available2017-05-09T00:21:23Z
    date copyrightAugust, 2006
    date issued2006
    identifier issn0094-9930
    identifier otherJPVTAS-28470#467_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/134516
    description abstractIn the summers of 2000 and 2001, a series of controlled fire tests were conducted on horizontal 1890liter (500 US gallon) propane pressure vessels. The test vessels were instrumented with pressure transducers, liquid space, vapor space, and wall thermocouples, and an instrumented flow nozzle in place of a pressure relief valve (PRV). A computer controlled PRV was used to control pressure. The vessels were heated using high momentum, liquid propane utility torches. Open pool fires were not used for the testing because they are strongly affected by wind. These wind effects make it almost impossible to have repeatable test conditions. The fire conditions used were calibrated to give heat inputs similar to a luminous hydrocarbon pool fire with an effective blackbody temperature in the range of 850°C±50°C. PRV blowdown (i.e., blowdown=poppressure−reclosepressure) and fire conditions were varied in this test series while all other input parameters were held constant. The fire conditions were varied by changing the number of burners applied to the vessel wall areas wetted by liquid and vapor. It was found that the vessel content’s response and energy storage varied according to the fire conditions and the PRV operation. The location and quantity of the burners affected the thermal stratification within the liquid, and the liquid swelling (due to vapor generation in the liquid) at the liquid∕vapor interface. The blowdown of the PRV affected the average vessel pressure, average liquid temperature, and time to temperature destratification in the liquid. Large blowdown also delayed thermal rupture.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleThe Effect of Pressure Relief Valve Blowdown and Fire Conditions on the Thermo-Hydraulics Within a Pressure Vessel
    typeJournal Paper
    journal volume128
    journal issue3
    journal titleJournal of Pressure Vessel Technology
    identifier doi10.1115/1.2218353
    journal fristpage467
    journal lastpage475
    identifier eissn1528-8978
    keywordsPressure
    keywordsTemperature
    keywordsVapors
    keywordsFire
    keywordsVessels
    keywordsPressure vessels
    keywordsRupture
    keywordsThermal stratification AND Relief valves
    treeJournal of Pressure Vessel Technology:;2006:;volume( 128 ):;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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