• Title/Summary/Keyword: NG bunkering

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A Study on the Evaluation of Structural Safety of Saddle for Bunkering of LNG Fueled Ship (LNG 연료추진선의 벙커링을 위한 Saddle의 구조 안전성 평가에 관한 연구)

  • Kim, Tae-Wook;Cho, Su-Gil;Kim, Seong-Soon;Jhun, Jeong-Ik;Kim, Hyung-Woo
    • Journal of the Korean Society of Industry Convergence
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    • v.24 no.6_2
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    • pp.745-751
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    • 2021
  • The International Maritime Organization(IMO) has established Emission Control Areas(ECA) in the Baltic Sea, North Sea, and sea areas in the United States since 2012, and encourages the use of clean fuels such as Natural Gas(NG). To keep pace with the increase in international demand for LNG bunkering vessels, research for the localization of key equipment for LNG bunkering must also be performed in Korea. For research and development of core bunkering equipment and systems, in this study, heat transfer analysis and structural analysis were performed by modeling the saddle, which must first be secured structurally by directly receiving the load of the hose. As a result, the suitability of the model was reviewed by analyzing the temperature distribution and stress level through the analysis results of this study.

Wind tunnel test of wind loads and current loads acting on FLBT and LNG bunkering shuttles in side-by-side configuration and comparison with empirical formula (병렬 배치된 FLBT 및 LNG-BS에 작용하는 풍하중 및 조류하중에 대한 풍동 시험 및 경험식 비교 연구)

  • Park, Byeongwon;Jung, Jae-Hwan;Hwang, Sung-Chul;Cho, Seok-Kyu;Jung, Dongho;Sung, Hong Gun
    • Journal of Ocean Engineering and Technology
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    • v.31 no.4
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    • pp.266-273
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    • 2017
  • In recent years, LNG bunkering terminals are needed to supply LNG as fuel to meet the emission requirements of the International Maritime Organization (IMO). A floating LNG bunkering terminal (FLBT) is one of the most cost-effective and environmentally friendly LNG bunkering systems for storing LNG and transferring it directly to an LNG fuel vessel. The FLBT maintains its position using mooring systems such as spread mooring and turret mooring. The loads on the vessel and mooring lines must be carefully determined to maintain their positions within the operable area. In this study, the wind loads acting in several side-by-side arrangements on the FLBT and LNG-BS were estimated using wind tunnel tests in the Force Technology, and the shielding effect due to the presence of ships upstream was evaluated. In addition, the empirical formulations proposed by Fujiwara et al. (2012) were used to estimate the wind force coefficients acting on the FLBT and those results were compared with experimental results.