Moogugal Different types rquwendaal extruders, hardware, instrumentation and control, fundamental principles, polymer properties, functional process analysis, and modeling and simulation of the extrusion process are all addressed. Refresh and try again. Polymer Extrusion by Chris Rauwendaal. Emmanuel Ortega marked it as to-read Feb 25, Are you an author? Randy Feraldo marked it as to-read Nov 08, Noor marked it as to-read Apr 29, Guilherme marked it as to-read Sep 12, English Choose a language for shopping. Amazon Rauwendxal Stream millions of songs.
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Many scale-up rules and theories have been proposed in the past, however it is not always clear how the Many scale-up rules and theories have been proposed in the past, however it is not always clear how the different scale-up methods will affect extruder performance.
A basic analysis of scale-up in plasticating single screw extruders is developed from which the effect of a certain scale-up strategy on extrusion performance can be evaluated in terms of solids conveying, melting, melt conveying, mixing, residence time, heat transfer, power consumption, and specific energy consumption. Various existing scale-up theories are evaluated and compared using the basic analysis. A number of existing scale-up theories have some significant drawbacks, in particular with non-constant specific energy consumption and imbalance between melting rate and pumping rate.
Conditions that are desirable to achieve in scale-up are enumerated and ranked in terms of importance. This leads to two new scale-up methods that result in constant mechanical specific energy consumption and high throughput rates. The first scale-up method keeps the specific surface area constant. This scale-up should work well for high values of the Brinkman number. However, at low values of the Brinkman number, the melting rate may be insufficient.
The second scale-up method keeps the melting rate at low Brinkman number equal to the pumping rate and, thus, should be useful in cases where the first scale-up method cannot be used.
Understanding Extrusion by Chris Rauwendaal
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