过冷中间流体气化器换热过程数值模拟

doi:10.11949/j.issn.0438-1157.20151066

化工学报 ›› 2015, Vol. 66 ›› Issue (S2): 62-65.DOI: 10.11949/j.issn.0438-1157.20151066

过冷中间流体气化器换热过程数值模拟

宋阳, 纪馨, 林文胜

上海交通大学制冷与低温工程研究所, 上海 200240

收稿日期:2015-07-06 修回日期:2015-07-15 出版日期:2015-08-31 发布日期:2015-08-31
通讯作者: 林文胜
基金资助:
工业与信息化部高技术船舶科研项目(工信部联装[2012]544号)。

Numerical simulation of heat transfer process within sub-cooled intermediate fluid vaporizer

SONG Yang, JI Xin, LIN Wensheng

Institute of Refrigeration and Cryogenics, Shanghai Jiao Tong University, Shanghai 200240, China

Received:2015-07-06 Revised:2015-07-15 Online:2015-08-31 Published:2015-08-31
Supported by:
supported by the Hi-tech Ship Research Project of Ministry of Industry and Information Technology.

摘要/Abstract

摘要：

中间流体气化器(IFV)多采用丙烷作为中间流体,利用其蒸发、冷凝相变过程将LNG气化。为了减小气化器体积,采用过冷中间流体换热流程。对过冷丙烷换热流程中的换热器换热过程进行数值模拟,研究影响过冷流体换热的因素。结果表明,随着海水流率的增大,换热增强;随着海水入口温度的升高,丙烷和水的进出口温差变大。在实际的工程应用中,在允许范围内尽量增大海水流率,以提高换热器效率。换热器倾斜角度对换热的影响需通过实验进一步探明。

关键词: 液化天然气, 传热, 数值模拟, 过冷中间流体

Abstract:

Intermediate fluid vaporizer(IFV)is an essential component for liquefied natural gas(LNG)floating storage and re-gasification unit(FSRU).Two-phase heat transfer process of propane is widely used in IFVs.To decrease the size of IFVs,the sub-cooled intermediate heat transfer process is used in this paper.Taking propane as the intermediate fluid,the heat exchanging process within the heat exchanger was investigated.Numerical simulation of heat transfer process within sub-cooled IFV heat transfer was carried out to find out the factors which may affect the heat transfer process.The results showed that heat transfer was enhanced by increasing the seawater flow rate;temperature difference of propane and seawater between inlet and outlet increased in seawater inlet temperature.Conclusions were drawn that a larger amount of the seawater flow rate was essential to a higher efficiency of the heat exchanger.Further experiments are needed to make clear the effect of inclination angle on heat transfer enhancement.

Key words: liquefied natural gas, heat transfer, numerical simulation, sub-cooled intermediate fluid

中图分类号:

TK124

宋阳, 纪馨, 林文胜. 过冷中间流体气化器换热过程数值模拟[J]. 化工学报, 2015, 66(S2): 62-65.

SONG Yang, JI Xin, LIN Wensheng. Numerical simulation of heat transfer process within sub-cooled intermediate fluid vaporizer[J]. CIESC Journal, 2015, 66(S2): 62-65.

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过冷中间流体气化器换热过程数值模拟

Numerical simulation of heat transfer process within sub-cooled intermediate fluid vaporizer

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