Net Rate of Fouling

The net rate of the formation of the deposits is the generally accepted starting point for all fouling models. Accordingly  

To relate this expression to the fouling factor, it must be integrated over an appropriate time period to obtain the mess of the deposit. 

This modal views the net rate as the result of two competing processes. Formation involves the following processes acting in sequence  

The first two processes for removal, where they occur, are probably corftinuous and affect all points on the surface of the deposit. Spalling or sloughing takes place at random times and at random locations. 

The fouling characteristics of a fluid in contact with a heat transfer surface are a function of a variety of parameters  

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