The Mechanism of heat transfer in a spray column heat exchanger: II. Dense packing of drops

AIChE Journal ◽  
1970 ◽  
Vol 16 (6) ◽  
pp. 955-963 ◽  
Author(s):  
Ruth Letan ◽  
Ephraim Kehat
Keyword(s):  
Heat Transfer ◽  
Heat Exchanger ◽  
Dense Packing ◽  
Spray Column

scholarly journals Analytical Modelling of a Spray Column Three-Phase Direct Contact Heat Exchanger

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Hameed B. Mahood ◽  
Adel O. Sharif ◽  
Seyed Ali Hosseini ◽  
Rex B. Thorpe
Keyword(s):  
Heat Transfer ◽  
Heat Transfer Coefficient ◽  
Heat Exchanger ◽  
Transfer Coefficient ◽  
Direct Contact ◽  
Relative Velocity ◽  
Contact Heat ◽  
Spray Column ◽  
Three Phase ◽  
Direct Contact Heat Exchanger

An analytical model for the temperature distribution of a spray column, three-phase direct contact heat exchanger is developed. So far there were only numerical models available for this process; however to understand the dynamic behaviour of these systems, characteristic models are required. In this work, using cell model configuration and irrotational potential flow approximation characteristic models has been developed for the relative velocity and the drag coefficient of the evaporation swarm of drops in an immiscible liquid, using a convective heat transfer coefficient of those drops included the drop interaction effect, which derived by authors already. Moreover, one-dimensional energy equation was formulated involving the direct contact heat transfer coefficient, the holdup ratio, the drop radius, the relative velocity, and the physical phases properties. In addition, time-dependent drops sizes were taken into account as a function of vaporization ratio inside the drops, while a constant holdup ratio along the column was assumed. Furthermore, the model correlated well against experimental data.

The mechanism of heat transfer in a spray column heat exchanger

AIChE Journal ◽  
1968 ◽  
Vol 14 (3) ◽  
pp. 398-405 ◽  
Author(s):  
Ruth Letan ◽  
Ephraim Kehat
Keyword(s):  
Heat Transfer ◽  
Heat Exchanger ◽  
Spray Column
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