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Modeling and simulation of shell and tube heat exchangers under milk fouling
Author(s) -
Georgiadis Michael C.,
Rotstein Guillermo E.,
Macchietto Sandro
Publication year - 1998
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690440422
Subject(s) - fouling , heat exchanger , shell and tube heat exchanger , work (physics) , dynamic scraped surface heat exchanger , heat transfer , mechanics , plate heat exchanger , process engineering , thermal , tube (container) , heat transfer coefficient , mechanical engineering , nuclear engineering , chemistry , engineering , thermodynamics , physics , critical heat flux , biochemistry , membrane
A mathematical model for single shell and tube heat exchangers under milk fouling is presented. A fouling model based on a reaction/mass‐transfer scheme is detailed in which the main factors during milk heat treatment are quantified in a formal way. This model is coupled with a detailed dynamic model of a shell‐and‐tube heat exchanger where both radial and axial domains are taken into account. An analytical procedure for the calculation of key parameters provides the means to achieve more accuracy. The simulation results agree well with available experimental work. Four different heat exchanger arrangements are then considered to illustrate their impact on the fouling behavior. The results are encouraging enough to validate current operating industrial techniques for fouling mitigation. For a given thermal duty, short heat exchangers are more prone to fouling due to high‐temperature requirements and milk should be heated 11s gradually as possible to minimize fouling. The results show that there are main tradeoffs between design and operation issues.