1962
DOI: 10.1002/aic.690080226
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Power requirements of gas‐liquid agitated systems

Abstract: In the field of agitation much work has been done to show that the power required by an agitator varies systematically with density of a homogeneous liquid (11 ) or an immiscible liquid pair (8) that is being agitated. The introduction of a gas into a liquid in which a mechanical agitator is rotating, on the other hand, brings about a mixture for which one is unable to calculate an average density significantly related to the power consumption of the impeller. The theory of power requirement of an impeller rot… Show more

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Cited by 197 publications
(79 citation statements)
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“…Sometimes these have been dimensionally inconsistent whilst in ·other cases an unrealised commonality in the correlated variables has misleadingly enhan-55 ced apparent value of the method presented. (Michel and Miller (1962), Nienow (1977)) The present paper demonstrates that dimensionless correlating equations can be used to establish the hydrodynamic conditions and on this basis to predict useful performance data. Knowledge of the relative importance of any differences between conditions used in establishing the correlation and those in the operating plant allows sensible assessment of both the value and limitations of the proposed equations.…”
Section: Introductionmentioning
confidence: 76%
“…Sometimes these have been dimensionally inconsistent whilst in ·other cases an unrealised commonality in the correlated variables has misleadingly enhan-55 ced apparent value of the method presented. (Michel and Miller (1962), Nienow (1977)) The present paper demonstrates that dimensionless correlating equations can be used to establish the hydrodynamic conditions and on this basis to predict useful performance data. Knowledge of the relative importance of any differences between conditions used in establishing the correlation and those in the operating plant allows sensible assessment of both the value and limitations of the proposed equations.…”
Section: Introductionmentioning
confidence: 76%
“…Mechanical power input in a sparged, agitated system can be calculated from This expression is recommended by Michel and Miller (1962 Fig. 4.…”
Section: Power Inputmentioning
confidence: 99%
“…This, however, requires knowledge of the constants a and b, Equation (15), as well as of the vapor flow rate (the latter being obviously directly measurable). Thus, for a given system, the variables involved are q. and AT, which are usually dictated by the process requirements with N and D as dependent variables.…”
Section: (23)mentioning
confidence: 99%