烟熏炉螺旋管换热器换热仿真模型研究  

Study on Simulation Model of Heat Transfer in Spiral Heat Exchanger of Smoked Furnace

作　　者：刘红[1] 祝高永 陈斐奇[1] 蒋兰芳[3] 杨哲人[1] 

机构地区：[1]浙江工业大学机械工程学院,浙江杭州310014 [2]浙江瑞邦机械有限公司,浙江嘉兴314006 [3]浙江工业大学之江学院,浙江杭州310024

出　　处：《轻工机械》2016年第1期28-30,共3页Light Industry Machinery

基　　金：中国博士后科学基金(2014M561786)

摘　　要：换热器是肉食品热加工的烟熏炉的重要组成部分,一般有螺旋板式与U型2种不同形式。目前根据热加工要求设计换热器时,结构参数的选择存在一定的盲目性,即换热器的尺寸是否满足要求完全凭经验及依赖事后验证。文中针对某一类型烟熏炉螺旋管式换热器进行流动传热分析,建立换热器的一圈为基本单元的数值分析模型。借助CFD技术,分析了不同圈数对出口温度分布的影响。结果显示不同圈数对换热器的温度分布影响较大,且基本单元截面的温度值与基本单元数量呈二次函数关系。拟合不同圈数下各截面的温度值,得到各基本单元的出口温度与基本单元个数(圈数)的函数关系。该函数关系能够有效地反映换热器温度降趋势,从而指导具体的换热器设计。The heat exchanger is an important part of smoked furnace of processing furnace,and there are usually two different forms of spiral type and U type. At present there is certain blindness in thermal processing requirements,according to the design of heat exchanger design parameter. In other words whether the size meets the requirements relies on experience and verification. This paper focused on a certain type of flow and heat transfer analysis in smoked furnace and set up a analysis model numerical as the basic unit of the heat exchanger for a cycle. With the aid of the CFD technology,the paper analyzed the influence of temperature field in different cycle. The results show the different cycle has great effect on temperature field in heat exchanger,and the basic unit cross section temperature values are two function relation with the number of basic units. To fit the temperature value of each section under the different cycles,and it gets a number of each basic unit of the outlet temperature and the basic unit（ cycles） function relationship. The function relationship can effectively reflect the heat exchanger temperature drop trend,so as to guide the design of the heat exchanger.

关 键 词：烟熏炉 换热器单元 计算流体力学(CFD) 出口温度分布 

分 类 号：TK172[动力工程及工程热物理—热能工程]