1.5m~3独立C型LNG储罐蒸发率简化算法

发布时间：2018-06-14 16:26

本文选题：LNG储罐 + 漏热　；参考：《大连理工大学学报》2017年01期

【摘要】：提出一种考虑罐壁、垫木、管路、绝热层等漏热因素的1.5m3独立C型LNG储罐蒸发率的简化计算数值模型,验证了各漏热因素的独立性,建立了计算体系,统计回归蒸发率与环境温度之间的关系,提出简化的计算公式.将罐体温度场参数化、将漏热因素简化并参数化,使用有限元方法对罐体的温度场进行数值模拟,得到罐体漏热量.比较罐壁、垫木、管路、绝热层等对蒸发率的影响,分析得出各漏热因素温度场在工程设计情况下不会产生叠加效应这一结论.罐壁对蒸发率影响较大,垫木、管路影响较小.结果表明,该算法可快速有效预报1.5m3独立C型LNG储罐蒸发率,减少建模计算流程,在LNG储罐方案总体设计阶段有着较高的实用价值.
[Abstract]:A simplified numerical model for calculating evaporation rate of 1.5m3 independent C type 1.5m3 storage tank considering heat leakage factors such as tank wall, cushion wood, pipeline and adiabatic layer is presented. The independence of each heat leakage factor is verified, and a calculation system is established. The relationship between evaporation rate and ambient temperature is statistically regressed and a simplified formula is put forward. The temperature field of the tank is parameterized and the heat leakage factor is simplified and parameterized. The finite element method is used to simulate the temperature field of the tank and the heat leakage of the tank is obtained. By comparing the influence of tank wall, cushion wood, pipe and adiabatic layer on evaporation rate, it is concluded that the temperature field of each heat leakage factor will not produce superposition effect under the condition of engineering design. The influence of tank wall on evaporation rate is greater than that of wood cushion and pipeline. The results show that the algorithm can quickly and effectively predict the evaporation rate of 1.5m3 independent C-type storage tank and reduce the modeling and calculation process. It has a high practical value in the overall design phase of 1.5m3 storage tank scheme.
【作者单位】：大连理工大学船舶工程学院;大连理工大学工业装备结构分析国家重点实验室;中华人民共和国新港海事局;
【基金】：高技术船舶科研计划项目(工信部联装[2014]498号) 广东省科技计划项目(2015B090904010,2016B090918092) 海洋可再生能源专项资金项目(QDME2013ZB01)
【分类号】：TE972

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