Heat Transfer Enhancement by Fluidized Solid Particles in Gas Carrying Evaporation  

作　　者：于志家 孙成新 孙相彧 刘展红 

出　　处：《Chinese Journal of Chemical Engineering》2001年第3期247-252,共6页中国化学工程学报（英文版）

基　　金：the National Natural Science Foundation of China (No. 59576039).

摘　　要：Heat transfer characteristics are studied for gas carrying evaporation with fluidized solid particles in a vertical rectangular conduit. Experimental results show that heat transfer of gas carrying evaporation is enhanced and the superheat of liquid in contact with heating surface lowers remarkably by introducing solid particles. Nucleate boiling on the heating surface is suppressed to a considerable degree. The mechanism of heat transfer enhancement by fluidized solid particles is analyzed with the consideration of collisions of solid particles with the boiling vapor bubbles.Heat transfer characteristics are studied for gas carrying evaporation with fluidized solid particles in a vertical rectangular conduit. Experimental results show that heat transfer of gas carrying evaporation is enhanced and the superheat of liquid in contact with heating surface lowers remarkably by introducing solid particles. Nucleate boiling on the heating surface is suppressed to a considerable degree. The mechanism of heat transfer enhancement by fluidized solid particles is analyzed with the consideration of collisions of solid particles with the boiling vapor bubbles.

关 键 词：heat transfer flow boiling EVAPORATION gas-liquid-solid three-phase 

分 类 号：TQ02[化学工程]