Title page for ETD etd-10132010-020112
|Type of Document
||Hunter, Kim R.
||Macroscopic convection in the thin-film processor
||Master of Science
|Rony, Peter R.
|McGee, Henry A. Jr.
|Date of Defense
The thesis explores the proposal that macroscopic fluid convection in
thin-film processors may be adequately represented by simple linear
deterministic models. In addition, it examines the suggestion that the models
themselves provide a useful tool in the search for a generalizable 'intrinsic'
process heat transfer film coefficient, i.e., one that includes the effects of
axial dispersion of the process fluid. Such a parameter would be helpful in
the design and scale up of thin-film equipment.
The following approach was used to investigate this proposal: first,
experimental fluid residence time distributions were obtained t over a range of
operating conditions, using an industrial pilot plant thin -film processor. The
experimental data were used to select an appropriate linear fluid flow model for
the process. The model parameters were evaluated over this range using
frequency response techniques. These models were subsequently incorporated
into a numerical heat transfer simulation of the thin -film processor. Careful
matching of the pilot plant transient temperature responses to those predicted
by the simulation yielded the sought after intrinsic (dispersion corrected) heat
transfer film coefficients for the processor.
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