CAJ | 학술논문

在换热管内通以含颗粒旋流，一方面旋流颗粒有效地搅乱了边界层，起到强化传热作用；另一方面，流态化颗粒相对管壁面存在相对滑动，可以有效擦除管内壁已存在的污垢，起到除垢作用。设计了一试验装置，反复试验结果表明：管内流态化颗粒除垢速度快，传热系数远高于各种非流态化螺旋流，且传热系数基本稳定。
재환열관내통이함과립선류，일방면선류과립유효지교란료변계층，기도강화전열작용；령일방면，류태화과립상대관벽면존재상대활동，가이유효찰제관내벽이존재적오구，기도제구작용。설계료일시험장치，반복시험결과표명：관내류태화과립제구속도쾌，전열계수원고우각충비류태화라선류，차전열계수기본은정。
By passing through the cyclone containing particles inside the heat exchange tubes , on one hand , the heat transfer was strengthened because rotational flow particles disturbed the boundary layer effectively ;on the other hand, scale removal of the existing dirt on tube wall is also effective because of the relative sliding of fluidized particles to the tube wall .A test device was designed in this work , and repeated experimental results showed that the fluidized particle can descale quickly in the tube , its heat transfer coefficient is much higher than all kinds of non-fluidized spiral flow and heat transfer coefficient is basically stable .