Simulation of pre-cooling of a liquefied natural gas storage tank

KUANG Yiwu; ZHUAN Rui; WANG Wen; ZHU Juxiang

doi:10.11949/j.issn.0438-1157.20150960

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Simulation of pre-cooling of a liquefied natural gas storage tank

更新时间：2025-12-10

- Simulation of pre-cooling of a liquefied natural gas storage tank
- CIESC Journal Issue S2, Pages: 138-142(2015)
- 作者机构：
  
  1. 上海交通大学制冷与低温工程研究所,上海,200240
  2. 浙江工业大学化工学院,浙江,杭州,310029
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20150960
  CLC： E972
- Online First：31 August 2015，
  
  Published：31 August 2015
- 稿件说明：
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KUANG Yiwu, ZHUAN Rui, WANG Wen, et al. Simulation of pre-cooling of a liquefied natural gas storage tank[J]. CIESC Journal, 2015, (S2): 138-142.
DOI：

KUANG Yiwu, ZHUAN Rui, WANG Wen, et al. Simulation of pre-cooling of a liquefied natural gas storage tank[J]. CIESC Journal, 2015, (S2): 138-142. DOI： 10.11949/j.issn.0438-1157.20150960.

摘要

建立了液化天然气(LNG)储罐喷淋预冷过程的流动传热与传质模型

对储罐内热物理场和储罐壁面温度的变化进行探讨。分析表明

喷淋进入储罐的LNG液滴并不能完全覆盖整个储罐

液滴进入储罐后

速度迅速衰减并转成垂直下落

同时液滴不断吸热汽化。预冷过程中

LNG的喷淋速度决定了储罐的冷却速度

温降最快的位置出现在储罐底部的中心区域

侧壁温降速度较慢。由于储罐的底部中心区域出现二次流动

阻碍了储罐底壁与内部低温气体的换热

同时由于混凝土对容器的导热

造成容器底部中心区域的温度不减反增的现象。

Abstract

Before filling the liquefied natural gas(LNG)into the storage tank

a pre-cooling operation is needed to avoid the rapid dropping of temperature.In the present study

a numerical model of the pre-cooling of a LNG storage tank is presented in this paper.The heat and mass transfer during the pre-cooling process in the storage tank and the thermal conduction in the tank walls are taken into consideration in the current model.The simulation results show that the LNG droplets cannot cover the whole tank and there exists a maximum spray region.During the pre-cooling

the cool-down rate of the tank mainly depends on the LNG flow rate.The tank bottom part shows larger cool-down rate than the side wall.The maximum cool-down rate takes place at the center of the tank bottom.Due to backflow at the tank center

the wall temperature of this part will not decrease monotonically.

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