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Gas—liquid dispersion and mixing characteristics and heat transfer in a stirred vessel
Author(s) -
Xu G. J.,
Li Y. M.,
Hou Z. Z.,
Feng L. F.,
Wang K.
Publication year - 1997
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450750204
Subject(s) - mixing (physics) , dispersion (optics) , materials science , mechanics , heat transfer , thermodynamics , physics , optics , quantum mechanics
Properties of gas—liquid dispersion and mixing of seven types of impellers were studied and compared in a stirred vessel with aeration. New correlations for the properties including critical dispersion impeller speed, dispersion regime, power consumption, gas hold‐up, discharge flow number and discharge efficiency have been developed. The fluid/wall heat transfer was also studied with several types of dual impeller combinations. There is a critical impeller speed which determines how aeration changes the heat transfer coefficient. Operating conditions influence heat transfer interactively by three factors, which can be expressed by proper dimensionless variables.