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An experimental study on accelerated fouling of aluminum oxide and ferric oxide particles in internally enhanced tubes

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Abstract

This paper describes the results of accelerated particulate fouling tests performed on three enhanced tubes and a plain tube. The tests were performed using ferric oxide and aluminum oxide as foulant materials. Three enhanced tubes included 25 start, 10 start helically ribbed tubes and a ripple tube. Effects of the water velocity (0.9 to 1.8 m/s) and foulant concentration (750 to 2500 ppm) were investigated. At 750 ppm, the enhanced tubes fouled almost the same as the plain tube for the entire velocity range tested (0.9 to 1.8 m/s). The enhanced tube fouled faster than the plain tube for cases of high concentration combined with low velocities. Of the three enhanced tubes, the 25 start helically ribbed tube fouled faster than the ripple and the 10 start helically ribbed tubes. One thing to be noted is that the fouling concentrations used in the tests are significantly higher than would be expected in commercial heat exchangers. Also, the velocity range investigated is lower than would be expected in heat exchanger operation.

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Correspondence to Nae-Hyun Kim.

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Recommended by Associate Editor Chang Yong Park

Nae-Hyun Kim is a Professor in School of Mechanical System Engineering, Incheon National University. He received Ph.D. from Penn State University in 1989. His interest include heat transfer enhancement, heat and mass transfer modeling of an enthalpy exchanger, boiling and condensation in minichannels, flow distribution in parallel flow heat exchangers, etc.

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Abedin, M.Z., Kim, NH. An experimental study on accelerated fouling of aluminum oxide and ferric oxide particles in internally enhanced tubes. J Mech Sci Technol 30, 5707–5714 (2016). https://doi.org/10.1007/s12206-016-1141-2

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  • DOI: https://doi.org/10.1007/s12206-016-1141-2

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