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http://dx.doi.org/10.5916/jkosme.2015.39.4.425

A Study of Thermo-Mechanical Analysis for the Design of High Pressure Piping System for Natural Gas Fuel Vessel  

Park, Seong-Bo (Department of Naval Architecture and Ocean Engineering, Pusan National University)
Sim, Myung-Ji (Department of Naval Architecture and Ocean Engineering, Pusan National University)
Kim, Myung-Soo (Department of Naval Architecture and Ocean Engineering, Pusan National University)
Kim, Jeong-Hyeon (Department of Naval Architecture and Ocean Engineering, Pusan National University)
Lee, Jae-Myung (Department of Naval Architecture and Ocean Engineering, Pusan National University)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.39, no.4, 2015 , pp. 425-431 More about this Journal
Abstract
LNG (liquefied natural gas) is considered the best alternative eco-fuel, and many studies on the LNG fuel system have been performed to use LNG as the fuel for ships. For the LNG fuel supply system, natural gas transfers from the vaporizer to the engine in the gaseous state with a temperature of $50^{\circ}C$ and a pressure of 35MPa. Therefore, a structural safety evaluation of the double-walled pipelines considering thermal load is essential. In this article, an uniaxial tensile test for super duplex stainless steel, material for double-walled pipe, according to the annealing time was carried out to analyze the thermal effect. In addition, thermo-structural analysis of the high temperature-high pressure double-walled pipe with fixed supports that are now used widely was carried out to evaluate the structural safety. To minimize stress concentration of the connection point between the support and inner pipe, the shapes of the new type support that can slip through inner pipe were proposed, and the supports which has best structural performance was selected using the results from the thermo-structural analyses of new supports and an analysis of the whole double-walled pipeline was performed to ensure structural safety. These results can be used as a database for the design of double-walled pipelines and sliding support.
Keywords
Thermo-mechanical analysis; Natural gas; Liquefied natural gas(LNG); Double-walled pipeline;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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