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On the determination of heat transfer coefficient between pvc and steel in vacuum extrusion calibrators

L. Fradette, P.A. Tanguy, P. Hurez, D. Blouin

International Journal of Numerical Methods for Heat & Fluid Flow

ISSN: 0961-5539

Article publication date: 1 January 1996

195

Abstract

The design of vacuum calibrators for the cooling of complex PVC profiles is central to the production of high quality extrudates. One important parameter governing cooling efficiency is the heat transfer coefficient at the interface between the stainless steel calibrator and the PVC extrudate, whose value is often taken as constant regardless of the extrusion velocity and the applied pressure vacuum. In this paper, a method is proposed to evaluate the variation of the heat transfer coefficient over the entire calibrator length. The idea is to use temperature measurements together with heat transfer simulation to derive a heat transfer correlation that can be used in practical design cases.

Keywords

Citation

Fradette, L., Tanguy, P.A., Hurez, P. and Blouin, D. (1996), "On the determination of heat transfer coefficient between pvc and steel in vacuum extrusion calibrators", International Journal of Numerical Methods for Heat & Fluid Flow, Vol. 6 No. 1, pp. 3-12. https://doi.org/10.1108/EUM0000000004095

Publisher

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MCB UP Ltd

Copyright © 1996, MCB UP Limited

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