Abstract
［Objective］ To optimize the structure of gas -phase rotary heat exchanger and address low heat transfer efficiency of gas -phase rotary heat exchanger with single -blade shell -side structure.［Methods］ The performance of three kinds of shell -side heat exchangers is analyzed by establishing a simplified model and computational fluid dynamics (CFD ) method.Taking the shell -side pressure drop and convective heat transfer coefficient as the test indexes,this study explores the influence of main parameters such as the number of working circles,blade height,and blade width on the shell -side pressure drop and convective heat transfer coefficient and conducts optimization and verification.［Results］ The overall performance of the six -blade heat exchanger is better,with the shell -side pressure drop reduced by 7%~8% and the convective heat transfer coefficient increased by 8%~10%.In the case of 3 working circles,the blade height of 45.05 mm,and the blade width of 4.79 mm,the minimum shell -side pressure drop of the six -blade heat exchanger is 6.95 kPa,which is 15%~21% lower than that before optimization.The maximum convective heat transfer coefficient is 183.35 W/(m2·K),which is 10%~12% higher than that before optimization.The error between the simulated value and the experimental value of shell -side pressure drop is ≤6%,and the error between those of the convective heat transfer coefficient is ≤5%.The optimization results are reliable.［Conclusion］ With the optimized shell -side structure,the gas -phase heat exchanger has good heat transfer performance.
Publication Date
4-3-2025
First Page
85
Last Page
93
DOI
10.13652/j.spjx.1003.5788.2024.80608
Recommended Citation
Yu, ZHENG; Lin, WAN; Gang, CHE; Jijun, LIU; and Hongchao, WANG
(2025)
"Shell-side structure optimization and experiment of gas-phase heat exchanger based on numerical simulation,"
Food and Machinery: Vol. 41:
Iss.
2, Article 10.
DOI: 10.13652/j.spjx.1003.5788.2024.80608
Available at:
https://www.ifoodmm.cn/journal/vol41/iss2/10
References
[1] 张雪漫.农业基础设施对粮食产量的影响研究 [D].杭州:浙江财经大学,2022:26.ZHANG X M.Study on the influence of agricultural infrastructure investment on grain yield [D].Hangzhou:Zhejiang University of Finance & Economics,2022:26.
[2] 刁显琪,万霖,车刚,等.基于粮食干燥机旋转管壳式换热器设计与研究 [J].农机化研究,2019,41(5):232-236.DIAO X Q,WAN L,CHE G,et al.Innovative design of grain dryer rotating shell and tube heat exchanger based on heat transfer enhancement theory [J].Journal of Agricultural Mechanization Research,2019,41(5):232-236.
[3] 郑元昊,王曦.新材料技术在节能减排中的作用及应用 [J].科技创新与应用,2022,12(26):157-160.ZHENG Y H,WANG X.The role and application of new material technology in energy saving and emission reduction [J].Technology Innovation and Application,2022,12(26):157-160.
[4] 孙通通.换热器的研究现状及应用进展 [J].现代制造技术与装备,2019,55(6):164-165.SUN T T.Research and application progress of heat exchangers[J].Modern Manufacturing Technology and Equipment,2019,55(6):164-165.[5] 林文珠,曹嘉豪,方晓明,等.管壳式换热器强化传热研究进展[J].化工进展,2018,37(4):1 276-1 286.LIN W Z,CAO J H,FANG X M,et al.Research progress of heat transfer enhancement of shell-and-tube heat exchanger [J].Chemical Industry and Engineering Progress,2018,37(4):1 276-1 286.
[6] 田金凯,车刚,万霖,等.气相旋转换热器壳程强化传热数值模拟 [J].农机化研究,2024,46(5):257-261,268.TIAN J K,CHE G,WAN L,et al.Numerical simulation of heat transfer enhancement on shell side of gas rotary heat exchanger[J].Journal of Agricultural Mechanization Research,2024,46(5):257-261,268.
[7] WANG X T,ZHENG N B,LIU Z C,et al.Numerical analysis and optimization study on shell-side performances of a shell and tube heat exchanger with staggered baffles [J].International Journal of Heat and Mass Transfer,2018,124:247-259.
[8] EL MAAKOUL A,LAKNIZI A,SAADEDDINE S,et al.Numerical comparison of shell-side performance for shell and tube heat exchangers with trefoil-hole,helical and segmental baffles [J].Applied Thermal Engineering,2016,109:175-185.
[9] JIAN W,YANG H Z,WANG S M,et al.Numerical investigation on baffle configuration improvement of the heat exchanger with helical baffles [J].Energy Conversion and Management,2015,89:438-448.
[10] 张 杏 祥.螺 旋 扭 曲 扁 管 换 热 器 传 热 与 流 阻 特 性 研 究 [D].南京:南京工业大学,2006:19.ZHANG X X.Study on heat transfer and flow friction properties of twisted tube heat exchanger [D].Nanjing:Nanjing University of Technology,2006:19.
[11] 张杏祥,魏国红,桑芝富.螺旋扭曲扁管换热器传热与流阻性能试验研究 [J].化学工程,2007,35(2):17-20,25.ZHANG X X,WEI G H,SANG Z F.Experimental research of heat transfer and flow friction properties in twisted tube heat exchanger [J].Chemical Engineering (China ),2007,35(2):17-20,25.
[12] 张杏祥,王海峰,桑芝富.螺旋扭曲扁管换热器壳程湍流传热的数值分析 [J].热力发电,2007,36(4):24-28.ZHANG X X,WANG H F,SANG Z F.Numerical analysis of turbulent flow heat transfer on the shell-side of spirally twisted flat-tube heat exchanger [J].Thermal Power Generation,2007,36(4):24-28.
[13] GU X,LUO Y K,XIONG X C,et al.Numerical and experimental investigation of the heat exchanger with trapezoidal baffle [J].International Journal of Heat and Mass Transfer,2018,127:598-606.
[14] GU X,ZHENG Z Y,XIONG X C,et al.Characteristics of fluid flow and heat transfer in the shell side of the trapezoidal-|like tilted baffles heat exchanger [J].Journal of Thermal Science,2018,27(6):602-610.
[15] 李凯, 王正方, 张金成, 等. 基于数值模拟的 J型换热器折流板参数优化研究 [J]. 低温与超导, 2023,51(5):43-48.LI K,WANG Z F,ZHANG J C,et al.Parameter optimization of J-type heat exchanger baffles based on numerical simulation[J].Cryogenics & Superconductivity,2023,51(5):43-48.
[16] 黄成,徐恺,韦智博,等.双圆弧齿轮泵流量特性影响因素数值模拟 [J].食品与机械,2023,39(10):87-92,111.HUANG C,XU K,WEI Z B,et al.Numerical simulation of factors affecting flow characteristics of double-circular-arc gear pump [J].Food & Machinery,2023,39(10):87-92,111.
[17] 古新,张前欣,王超鹏,等.U形导流板换热器传热和阻力性能分析 [J].化工进展,2022,41(7):3 465-3 474.GU X,ZHANG Q X,WANG C P,et al.Analysis of heat transfer and resistance performance of U-shaped baffle heat exchanger [J].Chemical Industry and Engineering Progress,2022,41(7):3 465-3 474.
[18] 汤 亮,叶 方 平,龚 发 云,等.不 同 湍 流 模 型 在 小 尺 寸 换 热 器CFD 计算中的应用与比较 [J].武汉大学学报 (工学版 ),2015,48(3):407-411.TANG L,YE F P,GONG F Y,et al.Application and comparison of different turbulence models to small size heat exchanger CFD calculations [J].Engineering Journal of Wuhan University,2015,48(3):407-411.
[19] 柯华,明廷臻,涂正凯.旋流叶片传热管内湍流强化传热数值模拟 [J].冶金能源,2009,28(2):38-41.KE H,MING T Z,TU Z K.Numerical simulation of turbulent heat transfer enhancement in the heat transfer tube with swirling blades [J].Energy for Metallurgical Industry,2009,28(2):38-41.[20] YANG W,MENG H,SHENG J.Dynamics of hairpin vortices generated by a mixing tab in a channel flow [J].Experiments in Fluids,2001,30(6):705-722.
[21] LEMENAND T,HABCHI C,DELLA VALLE D,et al.Vorticity and convective heat transfer downstream of a vortex generator [J].International Journal of Thermal Sciences,2018,125:342-349.
[22] KAMBOJ R,DHINGRA S.CFD simulation of heat transfer enhancement by plain and curved winglet type vertex generators with punched holes [J].International Journal of Engineering Research and General Science,2014,2(4):2 091-2 130.
[23] 崔亮.基于 ANSYS FLUENT Meshing 的复杂模型网格划分[J].CAD/CAM 与制造业信息化,2014 (4):55-57.CUI L.Meshing of complex model based on ANSYS FLUENT Meshing [J].Intelligent Manufacturing,2014 (4):55-57.
[24] 杜 拙.扭 曲 管 管 壳 式 换 热 器 壳 程 流 动 传 热 数 值 研 究 [D].兰州:兰州交通大学,2021:21.DU Z.Numerical study on flow and heat transfer in shell side of twisted tube and shell heat exchanger [D].Lanzhou:Lanzhou Jiaotong University,2021:21.
[25] 孔 德 霞.高 效 率 热 交 换 器 结 构 优 化 [J].设 备 管 理 与 维 修,2020 (20):39-41.KONG D X.Structure optimization of high efficiency heat exchanger [J].Plant Maintenance Engineering,2020 (20):39-41.
[26] 王珂,刘佳奇,安博,等.杈式折流栅对管壳式换热器壳程性能的影响 [J].压力容器,2021,38(8):52-59.WANG K,LIU J Q,AN B,et al.Effect of branch baffle on shell-side performance of shell-and-tube heat exchanger [J].Pressure Vessel Technology,2021,38(8):52-59.
