An experimental study on fouling over a single tube

An experimental study to investigate the fouling phenomena over a single tu be is carried out in the hot wind tunnel. The temperature of gas and coolin g air, and the temperature in the fouling probe are measured as a Function of time, probe position, gas temperature, particle feeding rate, cooling ai r flow rate, etc., giving the local and average heat transfer rate and foul ing factor. The amount of foulant adhered to the probe has different values at the different positions on the probe surface, giving different heat tra nsfer rate and fouling factors as a function of position on the probe surfa ce. The fouling factor increases with the flow rate of cooling air and foul ant feeding rate. The focal fouling factor increases with the gas temperatu re but the average fouling factor does not depend much on the gas temperatu re above 700 degrees C.