Heat-transfer performance of a liquid-liquid microdispersed system / Kai Wang in Industrial & engineering chemistry research, Vol. 47 N° 23 (Décembre 2008)  

Heat-transfer performance of a liquid-liquid microdispersed system [texte imprimé] / Kai Wang, Auteur ; Yangcheng Lu, Auteur ; Huawei Shao, Auteur . - 2009 . - p. 9754–9758.
Chemistry engineering
Langues : Anglais (eng)
in Industrial & engineering chemistry research > Vol. 47 N° 23 (Décembre 2008) . - p. 9754–9758

Mots-clés :	Performance Liquid-liquid Microdispersed system
Résumé :	In this work, the heat-transfer performance of liquid−liquid microdispersed systems was tested for the first time with a microdispersion contactor named a membrane dispersion minicontactor and octane/water as the working system. The volumetric heat-transfer coefficients ranging from 5 to 25 MW/(m3·°C) were obtained, which were 15−20 times higher than that of the conventional dispersion heat-transfer methods. The heat-transfer Murphree efficiencies, defined to evaluate the heat-transfer performance, reached 85−99% for the microdispersed system with residence times less than 0.1 s. By introducing the two parameters of Ca number and oil volumetric fraction, a semiempirical model for predicting the volumetric heat-transfer coefficient has been developed, which fits the experimental results very well. Furthermore, the similarity between the heat and mass transfer in the microdispersed system was demonstrated.
En ligne :	http://pubs.acs.org/doi/abs/10.1021/ie8005484