板式升膜蒸发器蒸发换热特性的实验研究  

Experiment study of evaporation heat transfer characteristics in plate climbing film evaporator

作　　者：高立博[1] 郑志皋[1] 陶乐仁[1] 薛维超[1] 黄理浩[1] 刘荣[1] 成简[1] 

机构地区：[1]上海理工大学,上海200093

出　　处：《低温工程》2011年第5期42-45,共4页Cryogenics

基　　金：国家高技术研究发展计划(2008AA05Z204)项目资助

摘　　要：升膜蒸发利用被蒸发溶液在受热沸腾汽化产生的蒸气带动料液上升,形成一个稳定的液膜,从而加快蒸发,提高了传热系数。针对蒸发器液位、换热温差、加热蒸气的流量等因素对板式升膜蒸发传热系数的影响进行了实验研究,实验结果表明随着蒸发器内液位的降低升膜蒸发传热系数明显提高,此外,换热温差、加热蒸气的流量等因素对升膜蒸发换热性能也有明显的影响。The influence of evaporation heat transfer coefficient for climbing film evaporator was studied by experiment at the different evaporator liquid level,temperature difference and the heating steam flow rate.The results show that the heat transfer coefficient of climbing film evaporator increases with the decreasing of liquid level.The climbing film evaporator heat transfer performance is also significantly affected by temperature difference and the heating steam flow rate.

关 键 词：升膜蒸发器 液位 换热系数 

分 类 号：TB657[一般工业技术—制冷工程] TB61