EXPERIMENTAL STUDY OF GRAVITY CONTROLLED CONDENSATION OF BINARY VAPOR MIXTURES ON A SMOOTH HORIZONTAL TUBE

1990 ◽  
Author(s):  
T. Fujii ◽  
Shigeru Koyama ◽  
N.M. Ndiwalana ◽  
Y. Nakamura
Keyword(s):  
Experimental Study ◽  
Horizontal Tube ◽  
Vapor Mixtures

Experimental study of sticking probabilities for condensation of nitric acid — water vapor mixtures

2001 ◽  
Vol 32 (7) ◽  
pp. 913-932 ◽  
Author(s):  
R Rudolf ◽  
A Vrtala ◽  
M Kulmala ◽  
T Vesala ◽  
Y Viisanen ◽  
...  
Keyword(s):  
Experimental Study ◽  
Water Vapor ◽  
Nitric Acid ◽  
Acid Water ◽  
Sticking Probabilities ◽  
Vapor Mixtures

Vapor/Liquid Interaction and Entrainment in Falling Film Evaporators

1980 ◽  
Vol 102 (1) ◽  
pp. 20-25 ◽  
Author(s):  
D. Yung ◽  
J. J. Lorenz ◽  
E. N. Ganic´
Keyword(s):  
Experimental Study ◽  
Horizontal Tube ◽  
Falling Film ◽  
Liquid Entrainment ◽  
Column Formation ◽  
Drop Detachment ◽  
Droplet Sizes ◽  
High Vapor ◽  
Mode A ◽  
Vapor Liquid

The problem of vapor/liquid interaction and entrainment in falling film evaporators is analyzed. Attention is focused primarily on horizontal tube falling film evaporators where liquid falls from one tube to the next in either a droplet or column mode. A criterion is presented for the onset of column formation, and equations are derived for the deflection of droplets and columns due to vapor crossflow. Based on an experimental study of drop detachment and breakup, a correlation is established for the resulting droplet sizes. For high vapor crossflow velocities, a criterion is presented for the inception of liquid entrainment by a process known as stripping. Based on the foregoing models, conditions are defined under which vapor/liquid interaction and entrainment are important for falling film evaporators.

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