• Title/Summary/Keyword: steam-explosion

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The Development of a Heat Balance Evaluation Program for the Main Steam Line of LNG Carrier (LNG선 주증기계통의 열평형산전용 전산프로그램 개발)

  • 최순호
    • Journal of Advanced Marine Engineering and Technology
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    • v.22 no.6
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    • pp.854-861
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    • 1998

  • The demand of LNG as a cheap and clean energy which does not cause an environmental problem has sharply been increased in Korea. In general LNG is stored in a cargo tank specially designed as a liquid state below $-162^{\circ}C$. The main engine of a LNG carrier is generally a steam boiler because LNG is a highly flammable fluid with the possibility of explosion. The main engine of a cargo ship has to be capable of the propulsion load and various auxiliary loads for the safe navigation since it is the primary energy source. Therefore the evaluation of a main boiler's energy capacity is a key design point in the planning of LNG carrier's construction. This research is to develop the computational program for the analysis of steam boiler Heat balance for LNG carrier.

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Radial Variation of Sound Absorption Capability in the Cross Sectional Surface of Yellow Poplar Wood (백합나무 횡단면 흡음성능의 방사방향 변이)

  • Kang, Chun-Won;Lee, Youn-Hun;Kang, Ho-Yang;Kang, Wook;Xu, Huiran;Chung, Woo-Yang
    • Journal of the Korean Wood Science and Technology
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    • v.39 no.4
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    • pp.326-332
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    • 2011

  • Radial variation of sound absorption capability and air permeability of yellow poplar (Liriodendron tulipifera) wood in cross sectional surface and effect of steam explosion treatment were estimated by the two microphone transfer function method and the capillary flow porometry, respectively. The sound absorption coefficients of steam explosion treated wood was higher than those of control wood and these values increased with frequency. Abundant and big vessel may behave as sound absorbing pore observed on the cross sectional surface of yellow poplar wood. The sound absorption coefficients and air permeability of sapwood were higher than those of heartwood for Liriodendron tulipifera.

  • https://doi.org/10.5658/WOOD.2011.39.4.326 인용 PDF KSCI

Analyses of Size of Solidified Particles in Steam Explosions of Molten Core Material (원자로 물질의 증기폭발에서 고화 입자 크기 분석)

  • Park, Ik-Kyu;Kim, Jong-Hwan;Min, Beong-Tae;Hong, Seong-Wan
    • Transactions of the Korean Society of Mechanical Engineers B
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    • v.34 no.12
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    • pp.1051-1060
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    • 2010

  • The effect of materials on fuel coolant interactions (FCIs) was analyzed on the basis of a solidified particle size response for TROI experiments.$^{(1)}$ The solidified particle size response can provide an understanding of the relationship among the initial condition, the mixing, and an explosion. Through a comparison of the size distributions of the solidified particles in the case of explosive and non-explosive FCIs, it is revealed that an explosive FCI results in the production of a large amount of fine particles and a small amount of large particles. The material effect of the size of solidified particles was analyzed using non-explosive FCIs without losing the information on the mixing. This analysis indicates that an explosive melt includes large particles that participate in the steam explosion, whereas a nonexplosive melt includes smaller particles and finer particles.

  • https://doi.org/10.3795/KSME-B.2010.34.12.1051 인용 PDF KSCI