Experimental study of growth characteristics of fouling in pipes by thermal resistance method

Briefly presents the test-bed and the experimental principle for monitoring the growth characteristics of fouling in heat exchange pipes by thermal resistance method, discusses the experimental scheme in detail. Experimentally studies growth characteristics of fouling both in new pipes and in used pipes treated by different de-fouling means. Discovers two stage of growth characteristics of fouling in new pipes, linearity and exponential, and re-growth characteristics of fouling in used pipes, exponential. The results show that it almost takes 7 days for fouling to grow up to the maximal thickness in the new pipes, but only 2 days to re-grow up to that scale in used tubes under the experimental water quality conditions.