新型内冷式薄膜蒸发器的传热与蒸发性能  

Heat Transfer and Evaporating Performance of the New-Type Inner-Condensing Thin-Film Evaporator

作　　者：皮丕辉[1] 马四朋[1] 涂伟萍[1] 杨卓如[1] 

机构地区：[1]华南理工大学化学工程研究所,广东广州510640

出　　处：《华南理工大学学报（自然科学版）》2002年第8期69-72,共4页Journal of South China University of Technology(Natural Science Edition)

基　　金：广东省自然科学基金资助项目 (990 6 48)

摘　　要：研究了带冷凝器的新型内冷式薄膜蒸发器的传热与蒸发性能 .采用正交实验 ,发现在进料流量、刮板转速和夹套加热温度这 3个因素中 ,对总传热系数和蒸发速率的影响最大的是夹套加热温度 ,其次是进料流量 ,最小的是刮板转速 .同时还发现物料在接近蒸发器内的蒸发温度下进料 ,能充分有效地利用蒸发面积 。Heat transfer and evaporating performance of a new-type inner-condensing thin-film evaporator is studied in this paper.By orthogonal experiment it is found that the heating temperature has the greatest influence on the total heating coefficient and evaporating rate,the feed speed has the second influence and the rotating speed has the smallest influence. It is also found that the evaporating surface can be used effectively and the heating coefficient and evaporating rate can be elevated when the feed temperature closes to the evaporating temperature.

关 键 词：薄膜蒸发 内冷式 传热系数 

分 类 号：TQ051.8[化学工程]