Effect of alkalinity on the scaling of simulated cooling tower water

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Abstract
The scaling behavior of simulated cooling tower water on a heat transfer surface was investigated. The alkalinity was the main parameter investigated. The fouling vs. time curves were fitted to the equation which was derived from a simple model of the fouling process.Correlation coefficients ranging from 0.81 to 0.987 were obtained in fitting the data to the model. No particular pattern was observed for delay times and they appeared not to have a significant influence on the asymptotic fouling resistance. The latter is a complex function of the alkalinity but generally increases with alkalinity for the conditions of the experiment. Scale strength appears to be a strong function of the non‐calcium carbonate components of the scale.

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