[mugabe]

Can some one help solve this problem for me, and explain to me to understand as well please. Thank you, i have gone through the formula but still do not get it.

An open straight-blade turbine of diameter 0.82 m is used to stir
reaction mixtures in a 20 m3 batch with baffles. The mixture to be
stirred is composed of 15% NaOH solution with phenyl acetate reflux.
Given that the power of the agitator is fixed at 0.52 kW, how many
r/min of the turbine is possible?
Given that Po = 1.07; density = 1890 kg/m3; viscosity = 1.2 Ns/m2
Determine:
(i) The r/min (rpm ) for the turbine.
(ii) Determine the emean value for the vessel.
(iii) Would the agitation in the vessel be laminar, transitional or
turbulent?

[Borek]

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