Cleanabilty study of a Scraped Surface Heat Exchanger - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Food and Bioproducts Processing Année : 2013

Cleanabilty study of a Scraped Surface Heat Exchanger

Résumé

Scraped Surface Heat Exchangers (Contherm SSHE model 6 x 3) are widely used industrially. In this kind of heat exchanger, the inlet and the outlet are difficult to clean due to their particular geometry and the presence of seals. A specific study was conducted on the inlet bowl of a SSHE, whose design has been optimized by the manufacturer in order to minimize risk of deposition by eliminating hydrodynamic dead zones. For this purpose, measurements of wall shear stress were made by an electrochemical method, for different hydrodynamic conditions. On the other hand, cleanability measurements were also performed. The bowl geometry tested presented no dead zones. However, the available space for flow significantly reduces the Reynolds number and turbulence intensity. As a consequence, three areas of increasing contamination appeared throughout the bowl due to the low mean and fluctuating shear stress values. The use of a pulsating flow increases these fluctuations, and thereby reduces the residual contamination. (C) 2012 The Institution of Chemical Engineers.

Dates et versions

hal-01924316 , version 1 (15-11-2018)

Identifiants

Citer

W. Blel, Patrick Legentilhomme, Thierry Bénézech, Francine Fayolle. Cleanabilty study of a Scraped Surface Heat Exchanger. Food and Bioproducts Processing, 2013, 91 (2), pp.95 - 102. ⟨10.1016/j.fbp.2012.10.002⟩. ⟨hal-01924316⟩
53 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More