空温式汽化器翅片管壁面温度变化特性实测研究  

Research on temperature variation characteristics of fin tube in ambient air vaporizer

作　　者：赵立前[1] 刘春枝 何旭[1] 蔡金洋 Zhao Liqian;Liu Chunzhi;He Xu;Cai Jinyang(China Petroleum and Natural Gas Pipeline Engineering Co.,Ltd,Langfang 065000,China)

机构地区：[1]中国石油天然气管道工程有限公司,廊坊065000

出　　处：《低温工程》2024年第4期71-76,共6页Cryogenics

基　　金：河北省重点研发计划新能源产业技术创新专项:液氢“制、储、运、加”系统集成关键技术及示范项目(22314401D)。

摘　　要：为推动空温式汽化器的应用发展,深入探究空温式汽化器的传热问题本质,开展空温式汽化器翅片管壁面温度变化特性实测研究。以液氮作为实验工质,搭建空温式汽化器翅片管壁面测温实验平台,分析空温式汽化器翅片管壁面温度变化特性。结果表明:空温式汽化器翅片管整体壁面温度随运行时间增加逐渐减低;翅片管壁面温度沿远离汽化器入口方向温度呈升高趋势,当实际汽化量为96 Nm3/h时,第1、7、11和16根翅片管壁面温度衰减率分别为254.0%、91.8%、56.5%和30.3%,当实际汽化量减小时,汽化所需翅片管总长度缩短。In order to promote the development of ambient air vaporizer,the substance of the heat transfer process was explored and the experiment was proposed on the temperature variation characteristic of the finned pipe wall in the vaporizer.The experimental platform for temperature measurement was constructed to analyze the variation characteristics of the finned pipe temperature in ambient air vaporizer and the liquid nitrogen was used as the experimental medium.Several results base on the experiment show that,the overall temperature of the fin pipe on the air vaporizer decreases with the operation time,and the increasing trend shows in the temperature of the finned pipe wall with the direction away from the inlet of vaporizer.For the 96 Nm3/h in the actual amount of gasification,the attenuation rates of the wall temperature are 254.0%,91.8%,56.5%and 30.3% respectively at the 1 st,7th,11th and 16th finned pipes.The decrease is conducted in the length of the finned pipe required for the air vaporizer,with the decrease of the amount of gasification.

关 键 词：空温式汽化器 温度场 壁面温度变化特性 

分 类 号：TB663[一般工业技术—制冷工程]