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

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to me insicl$ wall :fer the meas~emel!lt
of f'luid height".
The batek te:m.J>erature is lD.easured by three therm0-
eoup1es..
One Ilileasures the tentperature o;t' tke batek abeut
two inches above me ves sel bott~m aRd about i~ inehes f'r®m
the eemter liRe..
This ther-,noecn::tple sheats enters the pipe
:fittings un&er the tamk by passing through a bush~ ~d
then enters the vessel through the drain nipple" The
other two ]lr0jeet dO"tffi into the f'luid f'rom above" O]1le 7
imehes and the other 15 inehes f'r0m tJae top.
These therm0-
eoup1es were supported by the lid. All three bateh therm0-
.,
eoup1es as well as those in the piping system were ironeonstaatan
thermoeenples protected by a 1/100 inch thiek
316 stainless steel sheath. The error due to the time lag
was estimated to be about one pereent.
T.ne vessel jacket had three :fittings :for introduction
and exit Cl:f :fluids, two positioned 2 inehes :from the t0P
on opposite sides o:f the tank and ome on the underside ..
The f'itting on:the underside was hooked up so that steam
could enter and condensate could leave at the same time.
During the heating cycle steam enterea ome o:f the top
f'ittimgsand the bettom f'ittilAl.g.
The eondensate draim.ed
tfurough the bottom :fittiag; its temperature was measured by
I
a thermometer (0-200@0 0.2°0 divisioms) am~ it le:ft tn~