螺旋折流板换热器中阻流板对换热及沿程压降的影响  

EFFECT OF INSERTING BLOCK PLATES ON PRESSURE DROP AND HEAT TRANSFER IN SHELL-AND-TUBE HEAT EXCHANGERS WITH HELICAL BAFFLES

作　　者：王良[1] 罗来勤[1] 王秋旺[1] 曾敏[1] 陶文铨[1] 

机构地区：[1]西安交通大学能源与动力工程学院,陕西西安710049

出　　处：《工程热物理学报》2001年第S1期173-176,共4页Journal of Engineering Thermophysics

基　　金：国家重点基础研究发展规划项目(No.G2000026303);国家自然科学基金资助项目(No.50076024)

摘　　要：本文分别对螺旋角为１０°和１５°的管壳式螺旋折流板换热器加与不加阻流板进行了换热与阻力性能实验。实验是在相同的传热管束，相同的壳体内径，并在相同实验条件下（即在相同的冷热流体流速下）作比较。实验结果表明，加阻流板后，与不加阻流板的同一试件相比，二者换热性能相当。而由于阻流板的冲击，使壳侧沿程压降显著增大。The influence of inserting block plates on the performance of heat transfer and pressure drop in shell-and-tube heat exchangers with helical baffles was studied experimentally, with the identical number of tubes, identical shell inner diameter and identical flow rates of hot and cold fluids. The result shows that the presence of block plates between adjacent baffles may lead to slight increase of the shell-side heat transfer coefficient with great penalty in pressure drop increase.

关 键 词：螺旋折流板换热器 阻流板 柱塞状流动 热工性能评价指标 

分 类 号：TK172[动力工程及工程热物理—热能工程]