菠萝汁蒸发浓缩过程传热性能研究  

Research on heating transfer property during evaporating pineapple juice

作　　者：宋继田[1] 赵征[2] 杜玉雪[3] 茌俊[1] 刘振义[1] 

机构地区：[1]天津科技大学机械工程学院,天津300222 [2]天津科技大学食品与生物工程学院,天津300222 [3]天津职业大学机电工程与自动化学院,天津300000

出　　处：《食品与机械》2010年第1期104-106,共3页Food and Machinery

摘　　要：以菠萝汁试验为介质,重点研究酒窝状波纹竖板降膜蒸发器的传热性能,并分析单位板宽上流量I,蒸发温度TV,传热温差ΔT,糖度BX对蒸发器总传热系数K的影响,分别得出总传热系K与I,TV,ΔT,BX回归曲线。试验结果表明:酒窝状波纹竖板降膜蒸发器具有传热系数高、蒸发强度大、不易结垢,尤其适合于热敏性物料的浓缩等优点,能够较好地完成对菠萝汁的浓缩。The heat-transfer property was researched of dimpled vertical plate falling film evaporator during evaporating pineapple Juice. Analyzing the effect of flowing rate I, evaporating temperatureTv, heat-transfer difference in temperature A T, concentration on overall heat-transfer coefficient K, the curve of overall heat-transfer coeffi- cient K and I, Tv ,△T, Bx were obtained separately. The experimental results show that the dimpled vertical plate falling film evaporator owns high heat-transfer coefficient and great evaporating intensity, uneasy to produce foul, Especially suit to concentrate heat-sensitive liquid, easily accomplish the evaporation of pineapple juice, the experimental relating formula had great help on the fruit juice industry.

关 键 词：菠萝汁 酒窝状波纹竖板 降膜蒸发器 传热 

分 类 号：TS275.5[轻工技术与工程—农产品加工及贮藏工程]