板式换热器铁细菌生物污垢特性的实验分析  

Experimental analysis on bio-fouling of iron bacteria on plate heat exchanger

作　　者：徐志明[1] 贾玉婷[1] 王丙林[1] 张一龙[2] 刘坐东[2] 王景涛[1] 

机构地区：[1]东北电力大学能源与动力工程学院,吉林省吉林市132012 [2]华北电力大学能源动力与机械工程学院,北京102206

出　　处：《化工学报》2014年第8期3178-3183,共6页CIESC Journal

基　　金：国家自然科学基金项目(51076025)~~

摘　　要：为探讨铁细菌在板式换热器里的污垢规律,对不同流速、温度及浓度下铁细菌在板式换热器内的污垢特性进行了实验研究。结果表明:随着流速的增加,铁细菌的污垢热阻渐近值逐渐减小;随着温度的升高,铁细菌的结垢诱导期明显缩短,结垢速率加快,污垢热阻的渐近值呈减小的趋势;而随着浓度的增加,污垢热阻值呈现明显的增长。The bio-fouling characteristics of iron bacteria on plate heat exchanger was studied by several experiments to examine the impact of different flow velocity,temperature and concentration of iron bacteria. The results showed that the asymptotic value of heat transfer resistance of the plate heat exchanger, due to the bio-fouling, decreased gradually with increase of flow velocity. With increase of temperature,induction period of iron bacteria fouling cut down obviously,the rate of fouling accelerated,and the asymptotic value showed a reducing trend. With increasing concentration of iron bacteria, increase of the amplitude of heat transfer resistance of the plate heat exchanger was obvious because of the bio-fouling.

关 键 词：板式换热器 传热 铁细菌 生物膜 沉积物 污垢特性 

分 类 号：TK124[动力工程及工程热物理—工程热物理]