Publicado 8 números por año
ISSN Imprimir: 1065-5131
ISSN En Línea: 1563-5074
Indexed in
A REVIEW ON EFFECT OF PARTICLE SIZE AND SIZE DISTRIBUTION ON PARTICULATE FOULING IN ENHANCED TUBES
SINOPSIS
This paper describes the results of accelerated particulate fouling tests performed on different enhanced tubes and a plain tube. The key purpose of the tests was to investigate particulate fouling in practical heat exchanger systems where a mixture of particles exists in a flowing water stream. The applications considered are electric utility steam condensers on the Mississippi and Ohio rivers. These condensers operate with foulant materials consisting of silt and clay, having a distribution of particle sizes. Fouling data were taken for a wide range of particle concentrations, particle size, and velocity. The concentration was varied between 800 and 2,000 ppm for the particle sizes of 2,4 and 16 μm. In addition, the Reynolds number was varied between 24,000 and 65,000 for a constant concentration of 1,500 ppm.
The experimental results show that the enhanced tubes foul faster than the plain tube. However, at very low concentration the enhanced and plain tubes foul at the same rate. The asymptotic fouling resistance increases as the concentration increases and it decreases as the particle diameter and velocity increase.
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Gao Rong, Shen Chao, Wang Xinlei, Yao Yang, A generalized prediction model of waterside fouling for internally enhanced tubes in shell and tube condensers, Applied Thermal Engineering, 195, 2021. Crossref
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Gao Rong, Shen Chao, Wang Xinlei, Yao Yang, Experimental study on the fouling and heat transfer characteristics of enhanced tubes used in a cooling tower water system with the actual water quality, International Journal of Thermal Sciences, 181, 2022. Crossref