Prediction of batch heat transfer coefficients for pseudoplastic fluids ...

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TO NON-NE1:;JTONIAN FLUIDS REPORTED.-..!~~
LITEIZATURE
To date only two papers have been written on the correlation
of batch heat transfer coefficients in agitated
vessels.
Hork of Thomas Blanchard and J1..1. Chin Ch12. (22)
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Thomas Blanchard and J1..1.
Chin Ch1..1.st1..1.died heat transfer
to pseudoplastic fluids in an agitated tank (156).
They
performed heat transfer experiments on aqueous solutions
of 2.0 percent hydrolyzed polyacrylonitrile, 3 .. 5 percent
polyvinyl alcohol, ffiLd 2.0 percent polyacrylam~de
in a three
gallon stainless steel vessel equipped Hith both jacket and
coil. The vessel diameter was 10 5/16 inches and a )~- .. 5 x 1.0
inch paddle vv-as the impeller. They used the steady state
method and determined the heat transfer coefficients by
measuring the wall temperatures.
The exponents of the
Reynolds and Prandtl numbers 1