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Effective scraping in a scraped surface heat exchanger: some fluid flow analysis

Pyle, D.L. and Sun, K.H. and Lee, M.E.M. and Please, C.P. and Fitt, A.D. and Wilson, S.K. and Duffy, B.R. and Hall-Taylor, N. (2004) Effective scraping in a scraped surface heat exchanger: some fluid flow analysis. In: International Congress on Engineering and Food, 2004-03-07 - 2004-03-11.

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Abstract

An outline of mathematical models that have been used to understand the behaviour of scraped surface heat exchangers is presented. In particular the problem of the wear of the blades is considered. A simple model, exploiting known behaviour of viscous flow in corners and in wedges, and accounting for the forces on the blade is derived and solutions generated. The results shows initial rapid wear but that the wear rate goes to zero.