Vapor Phase Homogeneous Nucleation of Higher Alkanes:  Dodecane, Hexadecane, and Octadecane. 1. Critical Supersaturation and Nucleation Rate Measurements†

2001 ◽  
Vol 105 (47) ◽  
pp. 11866-11872 ◽  
Author(s):  
Mark Rusyniak ◽  
Victor Abdelsayed ◽  
Jason Campbell ◽  
M. Samy El-Shall
Keyword(s):  
Vapor Phase ◽  
Nucleation Rate ◽  
Homogeneous Nucleation ◽  
Critical Supersaturation

Homogeneous nucleation of water in argon. Nucleation rate computation from molecular simulations of TIP4P and TIP4P/2005 water model

2017 ◽  
Vol 146 (8) ◽  
pp. 084309 ◽  
Author(s):  
Lucia R. Dumitrescu ◽  
David M. J. Smeulders ◽  
Jacques A. M. Dam ◽  
Silvia V. Gaastra-Nedea
Keyword(s):  
Nucleation Rate ◽  
Homogeneous Nucleation ◽  
Molecular Simulations ◽  
Water Model

Characteristics of the Initial Stage of CaCO3 Crystallization Fouling on Straight Oblique Fin Tube

2013 ◽  
Vol 671-674 ◽  
pp. 2535-2541
Author(s):  
Ping Zhao ◽  
Jian Sheng ◽  
Hua Zhang
Keyword(s):  
Growth Rate ◽  
Induction Period ◽  
Nucleation Rate ◽  
Homogeneous Nucleation ◽  
Particle Concentration ◽  
Concentration Increase ◽  
Fouling Resistance ◽  
Initial Stage ◽  
Fin Tube ◽  
Resistance Decrease

To investigate the effect of CaCO3 concentration and velocity on scaling fouling process on plain and SOFT, experiments have been done at different CaCO3 concentration and velocity on the two kind tubes. The results are that the homogeneous nucleation rate and the growth rate are both increase when CaCO3 concentration increases. This make the scaling particle concentration and foulant ions concentration increase, the former gets more scaling on tubes and the later enlarges the heterogeneous nucleation rate and growth rate. Higher velocity decreases the nucleation of scaling, scaling crystal and fouling resistance, but it can prolong the induction period. Higher velocity increases nucleation rate on SOFT first, but the induction period extends and the mass of scaling and fouling resistance decrease. SOFT has a bigger heat transfer coefficient than PT at both clean and fouling conditions and it has smaller fouling resistance even a little more scaling.

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