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Circulation cleaning of a plate heat exchanger fouled by tomato juice
Author(s) -
JACKSON A. T.,
LOW WAI MING
Publication year - 1982
Publication title -
international journal of food science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.831
H-Index - 96
eISSN - 1365-2621
pISSN - 0950-5423
DOI - 10.1111/j.1365-2621.1982.tb00234.x
Subject(s) - heat exchanger , transition point , reynolds number , volumetric flow rate , shear stress , materials science , circulation (fluid dynamics) , chemistry , composite material , mechanics , thermodynamics , turbulence , physics
Summary The effect of a change in flow rate of a 2% w/w caustic soda solution on the circulation cleaning of a plate heat exchanger fouled with diluted tomato paste has been investigated at a temperature of 90°C and fixed circulation cleaning times of 5 and 10 min. For both circulation cleaning times a transition point was noted in the range 2.75–2.86 1/min (Reynolds number range 6600–6300, shear stress range 0.77–0.82 N/m 2 ). Below the transition point the effect of flow rate on cleaning efficiency was minimal, but at flow rates above the transition point there was a marked increase in cleaning efficiency as the flow rate (and hence shear stress at the surface) increased.