【摘要】 在半工业化实验的基础上,对带凸起插件及短扭带插件的管式换热器进行了阻力特性和传热特性的综合评价研究,结果表明:在光板插件上加工粗糙凸起有增强传热的作用;在不扭转的插件上加工粗糙凸起比扭带等旋转的插件上加工凸起效果更明显;带扭带插件,在Re大或较小时,短者或有一定长度者效果较好。更多还原

【Abstract】 On the basis of semi-industrialization test. this paper comprehensively appraises and studies drag characteristics and heat transfer characteristics of tubular heat exchanger with built-in elements on where there are prominence and short twisted strips. The result shows that processing rough prominence on smooth plate built-in elements can improve heat transfer, and more tangible result obtained with rough prominence on untwisted built-in elements than on such spiral built-in elements as twisted strips, also good effect got for the short or a certain long built-in elements with twisted strips when Re larger or smaller更多还原