低温液体翅片管换热器传热研究  

STUDY OF HEAT TRANSFER OF FINNED TUBE HEAT EXCHANGER FOR CRYOGENIC LIQUIDS

作　　者：陈光奇[1] 陈叔平[2] 昌锟[2] 苏海林[2] 

机构地区：[1]兰州物理研究所,真空低温技术与物理国家级重点实验室,甘肃兰州730000 [2]兰州理工大学石油化工学院,甘肃兰州730050

出　　处：《真空与低温》2007年第4期240-244,共5页Vacuum and Cryogenics

摘　　要：主要讨论了低温液体换热器的传热过程。通过低温液体在翅片管内的汽化实验,得到了汽化器表面各点温度随时间变化的曲线,分析曲线提出了气化换热过程分区计算的方法。将汽化过程分为4个区,即液体对流换热区、汽液两相沸腾换热区、缺液区及气体对流换热区并分别进行计算,同时总结了各分区适用的换热关联式,给出了计算结果。该方法为同类汽化器换热过程的计算提供了参考。The heat transfer process of a cryogenic liquid was studied.A group of variation curves of temperature vs time were got through a gasification experiment of cryogenic Liquid in a finned tube heat exchanger.A method of zoning calculation for gasification heat transfer process was proposed through analyzing the curves.Gasification Process was divided into four sections such as liquid convective heat transfer section,gas-liquid two-phase boiling heat transfer section,liquid lacking section and gas convective heat transfer section.The applicable heat transfer correlations were summarized,and an example calculation was made.The method provided an reference for the similar calculation of gasification heat transfer process

关 键 词：低温换热 分区计算 翅片管 液氩 

分 类 号：TB61[一般工业技术—制冷工程]