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

The results are tabulated ~ Table A-5.
The flow behavior index~ ~, am~ fluid 00nsisteRey
logarithm of the shear stress and Shear rate. T~e results
are listed ~ Table A-b. Since the fluid properties were
needed as functions of temperature, the fluid eonsistency
index was p10tted versus the temperature on semrllogarithmie
eeordinates; as suggested by Ferment (63).
The poi~ts
deseribed a straight line vJhiel3. CaE. be expressed as
IGg K :: A + B (T)
(A-IO
The constamts~ 'A ~d BI were calculated using a linear
regression. The flew behavior index was mot very temperature
dependent but eould be expressed as
m :: C + D (T)
(A-II
vrhere C and D Here evaluated using a linear regression.
The results are given in Table A-7.
TABLE A-7
CONSTANTS FOR EQUATIONS A-IO ~d A-il
A~;'
Fluid B C D
C"C- l )
(oC-l)
0.15% Capbopol 0 .. 702 -0 .. 00947 0.631 0.00117
0 .. 20% Carbo])ol 1 .. 607 -0.00bl0 0.423 0.00027
0 .. 24$& CarbQPol 1.906 -0.00308 0.378 -0.00034
,:. Tke use of tl'il.ese e0l1lsta:mts gives K in. d'J1llles see. Ja jelii1. 2