July 2005

Bonus Report: Heat Transfer Developments

Consider spiral heat exchangers for fouling applications

The inherent 'self-cleaning' action reduces downtime

Wilhelmsson, B., Alfa Laval

Heat exchanger fouling is estimated to account for 0.25% of the gross national product in highly industrialized countries.1 In the US refining industry alone, a study in the early 1980s estimated the fouling cost to be over $2 billion annually.2 Every plant operator around the world can testify to the large costs and hassle associated with both scheduled and unscheduled downtime originating from fouled heat transfer equipment. When selecting heat transfer equipment, reliability is one of the main criterion. The high cost of unscheduled downtime makes the process industry, in general, and the refinery and petrochemical industry, in particular, cautious about using unfamiliar, although not ne

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