LNG输送管道耦合传热的数值模拟

doi:10.11949/j.issn.0438-1157.20150712

化工学报 ›› 2015, Vol. 66 ›› Issue (S2): 206-212.DOI: 10.11949/j.issn.0438-1157.20150712

LNG输送管道耦合传热的数值模拟

胡卓焕, 黄天科, 张乐毅, 杨茉

上海理工大学能源与动力工程学院, 上海 200093

收稿日期:2015-05-26 修回日期:2015-06-03 出版日期:2015-08-31 发布日期:2015-08-31
通讯作者: 黄天科
基金资助:
国家自然科学基金项目(51076105)。

Numerical simulation of coupled heat transfer for LNG pipeline

HU Zhuohuan, HUANG Tianke, ZHANG Leyi, YANG Mo

School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China

Received:2015-05-26 Revised:2015-06-03 Online:2015-08-31 Published:2015-08-31
Supported by:
supported by the National Natural Science Foundation of China(51076105).

摘要/Abstract

摘要：

对LNG输送管道与其周围环境之间的耦合传热过程进行分析,包括管道与保温层之间的导热以及保温层与周围环境之间的对流传热和辐射,并对LNG输送管道的冷量损失进行了较为完整的分析和计算。用数值仿真对管道周围的流场和温度场进行模拟和分析,比较了不同厚度的保温材料、Reynolds数、环境温度以及阳光辐射等对冷量损失的影响。结果表明保温材料特性对LNG输送管道的冷量损失影响较为敏感。随着保温材料热阻的增加,Reynolds数、环境温度以及阳光辐射对冷量的损失的影响逐渐减小。

关键词: 液化, 天然气, 数值模拟, 传热, 对流

Abstract:

Coupled heat transfer was analyzed between liquefied natural gas(LNG)pipeline and environment,which including conduction,convection and radiative heat transfer.Conduction should be focused between pipeline and insulation.Convection and radiative was studied between insulation and environment.Cold exergy loss for LNG pipeline was discussed in addition.Then,numerical stimulation was adopted to analysis the flow and temperature filed around the pipeline.Different insulation materials,Reynolds number,environment temperature and solar radiation was investigated.The results showed the thermal resistance of insulation has a greater effect on the cold loss in LNG pipeline.With the increase of the thermal resistance of the insulation material,the influence of environment temperature,Reynolds number and solar radiation in cold exergy loss decreased.

Key words: liquefaction, natural gas, numerical simulation, heat transfer, convection

中图分类号:

TQ051.2

胡卓焕, 黄天科, 张乐毅, 杨茉. LNG输送管道耦合传热的数值模拟[J]. 化工学报, 2015, 66(S2): 206-212.

HU Zhuohuan, HUANG Tianke, ZHANG Leyi, YANG Mo. Numerical simulation of coupled heat transfer for LNG pipeline[J]. CIESC Journal, 2015, 66(S2): 206-212.

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LNG输送管道耦合传热的数值模拟

Numerical simulation of coupled heat transfer for LNG pipeline

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