新型搭接螺旋折流板换热器性能研究  

Performance of Heat Exchanger With Novel Overlapped Helical Baffles

作　　者：曹兴[1] 杜文静[1] 程林[1] 

机构地区：[1]山东大学热科学与工程研究中心,山东济南250061

出　　处：《工程热物理学报》2013年第6期1130-1132,共3页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.51106090)

摘　　要：本文提出了一种新型搭接螺旋折流板换热器。数值模拟结果表明,相邻折流板轴向周边重叠的结构有效地减轻了三角区漏流,使轴向速度沿径向的分布更加均匀;与1/4扇形螺旋折流板换热器相比,其壳程传热系数更高,压降更低,综合性能在小螺旋角下更具优势。Heat exchanger with novel overlapped helical baffles is proposed in the paper.Simulation results show that the axial peripheral overlapped structure between two adjacent baffles can effectively reduce the leakage from triangle zone,which makes radial distribution of axial velocity more uniform. Shell-side heat transfer coefficient is higher and pressure drop is lower,also comprehensive performance is better especially at smaller helix angle.

关 键 词：换热器 螺旋折流板 搭接 新型 数值模拟 

分 类 号：TK124[动力工程及工程热物理—工程热物理]