The effect of fouling on thermodynamic performance can be evaluated by stud
ying the increase of entropy generation rate due to fouling as compared to
that for clean surface tubes. In this study, an attempt has been made to co
rrelate the effect of fouling with entropy generation and related operation
al cost. In the model developed, fouling thickness and tube surface tempera
ture are considered to be the main parameters. Numerical results of entropy
generation and related operational cost due to both heat transfer and visc
ous friction under fouling conditions are presented and discussed. (C) 2000
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