[1]吴金星,刘少林,彭旭.绕管式换热器壳侧流动及传热模拟与实验研究[J].郑州大学学报(工学版),2019,40(01):77-82.[doi:10.13705/j.issn.1671-6833.2019.01.006]
　Wu Jinxing,Liu Shaolin,Peng Xu.Study on Numerical Simulation and Experiment on Fluid Flow and Heat Transfer in Shell Side of the Spiral Tube Heat Exchanger[J].Journal of Zhengzhou University (Engineering Science),2019,40(01):77-82.[doi:10.13705/j.issn.1671-6833.2019.01.006]
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绕管式换热器壳侧流动及传热模拟与实验研究()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
40
期数:
2019年01期
页码:
77-82
栏目:
出版日期:
2019-01-10

文章信息/Info

Title:
Study on Numerical Simulation and Experiment on Fluid Flow and Heat Transfer in Shell Side of the Spiral Tube Heat Exchanger
作者:
吴金星; 刘少林; 彭旭
郑州大学化工与能源学院节能技术研究中心
Author(s):
Wu Jinxing; Liu Shaolin; Peng Xu
Energy Saving Technology Research Center, School of Chemical Engineering and Energy, Zhengzhou University
关键词:
绕管式换热器; 强化换热; 数值模拟; 换热性能评价
Keywords:
Wound tube heat exchanger; Enhanced heat transfer; Numerical Simulation; Heat transfer performance evaluation
DOI:
10.13705/j.issn.1671-6833.2019.01.006
文献标志码:
A
摘要:
针对绕管式换热器的结构参数，建立不同管径（6mm<d0<14mm）、不同层间距（2mm<S2<4.5mm）和不同轴向间距（2mm<Z<14mm）的绕管式换热器的两层绕管几何模型。以水为换热介质，应用Fluent和Realizable κ-ε湍流模型对绕管式换热器的壳侧流体的流动及换热特性进行了数值模拟，分析了管径、层间距和轴向间距对努塞尔数、场协同数、火积损失率和综合换热性能评价因子的影响。结合数值模型制作了实验模型并开展了性能测试，将测得的实验数据和模拟结果进行了对比，结果表明，在研究范围内，当管径为6mm，层间距为3.5mm、轴向间距为14mm时，综合换热性能评价因子有最大值，温度差值、压力降模拟结果与实验数据相差1~4℃、0.8~1.2kPa。
Abstract:
The two layers tube model of spiral tube heat exchanger with different tube diameter (6mm<d0<14mm), different thickness of space bar(2mm<S2<4.5mm), and different tube pitch(2mm<Z<14mm)was study for the structure parameters of the spiral tube heat exchanger. Water was used as the heat transfer fluid, and the numerical simulation research about the characteristics of heat transfer and flow of the shell side fluid of the spiral tube heat exchanger was carried out by using Realizabl κ-ε model of Fluent software.The influence of tube diameter, thickness of space bar and tube pitch on Nusselt number,synergetic number,entransy loss rate, entransy thermal resistance,and comprehensive heat transfer performance evaluation factor was analyzed. The experimental model was made by combining the numerical model;and the performance test was carried out.The research results showed that the comprehensive heat transfer performance evaluation factor of the spiral tube heat exchange could reach the maximum when the pipe diameter was 6mm, the thickness bar was 3.5mm,and the tube pitch was 14mm.The difference between the simulation results and the experimental data of temperature and pressure drop was1~4℃，0.8~1.2kPa.

               

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更新日期/Last Update: 2019-03-02