AN INVESTIGATION ON LIQUID ENTRAINMENT ANDHEAT TRANSFER DETERIORATION IN FALLINGFILM EVAPORATION IN A VERTICAL TUBE

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AN INVESTIGATION ON LIQUID ENTRAINMENT ANDHEAT TRANSFER DETERIORATION IN FALLINGFILM EVAPORATION IN A VERTICAL TUBE

Online:1993-04-25 Published:1993-04-25

降膜蒸发管内液体夹带及传热恶化特性的研究

张鸣远,刘尧奇,陈学俊,马卫民,王文治

西安交通大学工程热物理研究所,西安交通大学工程热物理研究所,西安交通大学工程热物理研究所,西安交通大学工程热物理研究所,化工部化工机械研究院西安710049 ,西安710049 ,西安710049 ,西安710049 ,兰州730060

Abstract

Abstract: An extensive experimental investigation was made on liquid entrainment in vapor and heat transfer deterioration in falling film evaporation in a vertical tube with vapor up-flowing. It was discovered that the wall temperature in the inlet rose abruptly and fluctuated with increasing heat flux. A prediction correlation for heat transfer deterioration was developed by analyzing the mechanism and the influence factors.

摘要： 对垂直管内蒸汽和水逆向流动时的降膜蒸发、蒸汽夹带液体及传热恶化特性进行了详细的试验研究,发现降膜蒸发管工质入口端的壁温首先突然升高和出现波动.通过分析其机理和影响因素,给出了传热恶化的预测关系式.

Zhang Ming yuan, Liu Yaoqi, Cheng Xuejun and Ma Weimin (Institute of Engineering Thermophysicas Xian Jiaotong University, Xian 710049)Wang Wenzhi (Chemical Mechinery Research Institute, Lanzhou 730060). AN INVESTIGATION ON LIQUID ENTRAINMENT ANDHEAT TRANSFER DETERIORATION IN FALLINGFILM EVAPORATION IN A VERTICAL TUBE[J]. .

张鸣远,刘尧奇,陈学俊,马卫民,王文治. 降膜蒸发管内液体夹带及传热恶化特性的研究 [J]. CIESC Journal.