化学工程2025，Vol.53Issue(10)：44-48,54,6.DOI:10.3969/j.issn.1005-9954.2025.10.008
花丝螺旋型扰流子线圈数对传热特性的影响
Influence of coil numbers of filigree spiral type turbulator on heat transfer characteristics
摘要
Abstract
Heat exchanger is one of the most important equipment in petrochemical industries.The enhancement of heat transfer performance of heat exchanger is favorable not only for reducing the cost but also for improving the energy utilization rate.Numerical simulation was adopted to investigate the effect of the coil numbers of the filigree spiral type turbulator on the heat transfer characteristics of a heat exchanger under the condition of a constant heat flux of 1 000 W/m2 at the wall and Reynolds number Re of 4 000-21 000 with 50 ℃ water as the working medium,along with the selection of RNG k-ε turbulence model and SIMPLEC algorithm.The results show that the inclusion of turbulator can effectively enhance the fluid disturbance inside the heat exchanger,which promotes fluid mixing and significantly improves heat transfer.In a unit length of the core wire,the best heat transfer is achieved at a coil number of 4,and the Nusselt number Nu is improved by 142.8％-228.5％compared to plain tube.As the coil numbers increases,the friction factor f increases gradually.The performance evaluation criteria Hpec is all greater than 1 within the investigation scope.When the coil number is 3,Hpec is the best,reaching 1.36-1.81.关键词
换热器/传热/扰流子/数值模拟/湍流Key words
heat exchanger/heat transfer/turbulator/numerical simulation/turbulent flow分类
化学工程引用本文复制引用
于长臻,吴永红,佟春双,秦传卫,张兵..花丝螺旋型扰流子线圈数对传热特性的影响[J].化学工程,2025,53(10):44-48,54,6.基金项目
辽宁省自然科学基金资助项目(2021-MS-238) （2021-MS-238）
沈阳工业大学交叉学科团队项目(533097) （533097）
